O6-Methylguanine-DNA methyltransferase protein expression by immunohistochemistry in brain and non-brain systemic tumours: systematic review and meta-analysis of correlation with methylation-specific polymerase chain reaction (Structured abstract)      
Obesity: a systematic review on parental involvement in long-term European childhood weight control interventions with a nutritional focus (Provisional abstract)      
Obesity and bariatric surgery: A systematic review of associations with defecatory dysfunction (Provisional abstract)      
Obesity and surgical site infections risk in orthopedics: a meta-analysis (Provisional abstract)      
Obesity as a risk factor for triple-negative breast cancers: a systematic review and meta-analysis (Provisional abstract)      
Obesity control in Latin American and US Latinos: a systematic review (Provisional abstract)      
Obesity has multifaceted impact on biochemical recurrence of prostate cancer: a dose-response meta-analysis of 36,927 patients (Provisional abstract)      New 
Obesity in older adults: a systematic review of the evidence for diagnosis and treatment (Structured abstract)      
Obesity interventions for people with a learning disability: an integrative literature review (Provisional abstract)      
Obesity interventions in African American faith-based organizations: a systematic review (Provisional abstract)      New 
Obesity prevention interventions for middle school-age children of ethnic minority: a review of the literature (Structured abstract)      
Objective cognitive performance associated with electroconvulsive therapy for depression: a systematic review and meta-analysis (Structured abstract)      
Objective evidence for the efficacy of surgical management of the deviated septum as a treatment for chronic nasal obstruction: a systematic review (Provisional abstract)      
Objective response to chemotherapy as a potential surrogate end point of survival in metastatic breast cancer patients (Provisional abstract)      
Objectively measured physical capability levels and mortality: systematic review and meta-analysis (Provisional abstract)      
Observational gait assessment tools in paediatrics ? a systematic review (Provisional abstract)      
Obstacles to the take-up of mental health care provision by adult males in rural and remote areas of Australia: a systematic review (Provisional abstract)      New 
Obstetric and perinatal outcomes in singleton pregnancies resulting from IVF/ICSI: a systematic review and meta-analysis (Provisional abstract)      
Obstetric and perinatal outcomes in singleton pregnancies resulting from the transfer of blastocyst-stage versus cleavage-stage embryos generated through in vitro fertilization treatment: a systematic review and meta-analysis (Provisional abstract)      
Obstetric and perinatal outcomes in singleton pregnancies resulting from the transfer of frozen thawed versus fresh embryos generated through in vitro fertilization treatment: a systematic review and meta-analysis (Structured abstract)      
Obstetric medical emergency teams are a step forward in maternal safety! (Provisional abstract)      
Obstetric outcomes after conservative treatment for intraepithelial or early invasive cervical lesions: systematic review and meta-analysis (Structured abstract)      
Obstetric outcomes after treatment of fibroids by uterine artery embolization: a systematic review (Provisional abstract)      
Obstetric outcomes after treatment of periodontal disease during pregnancy: systematic review and meta-analysis (Structured abstract)      
Obstetrical, perinatal and maternal implications of spontaneous pushing and directed pushing (Provisional abstract)      
Obstetrical prognosis and pregnancy outcome following pelvic arterial embolisation for post-partum hemorrhage (Structured abstract)      
Obstructive sleep apnea and oxygen therapy: a systematic review of the literature and meta-analysis (Provisional abstract)      
Obstructive sleep apnea as a predictor of atrial fibrillation after coronary artery bypass grafting: a systematic review and meta-analysis (Provisional abstract)      New 
Obturator hernias: a review of the laparoscopic approach (Provisional abstract)      
Occlusal treatments in temporomandibular disorders: a qualitative systematic review of randomized controlled trials (Structured abstract)      
Occlusive therapy in atopic dermatitis: overview (Structured abstract)      
Occupational management of type I latex allergy (Provisional abstract)      
Occupational stress management programmes: a practical overview of published effect studies (Structured abstract)      
Occupational therapists' attitudes, knowledge, and implementation of evidence-based practice: a systematic review of published research (Provisional abstract)      
Occupational therapy for children with cerebral palsy: a systematic review (Structured abstract)      
Occupational therapy for community dwelling elderly people: a systematic review (Provisional abstract)      
Occupational therapy for patients with problems in personal activities of daily living after stroke: systematic review of randomised trials (Structured abstract)      
Occupational therapy for stroke patients: a systematic review (Provisional abstract)      
Occupational therapy interventions to improve performance of daily activities at home for older adults with low vision: a systematic review (Provisional abstract)      New 
Occurrence and preventability of adverse drug events in surgical patients: a systematic review of literature (Provisional abstract)      
The occurrence of adverse drug reactions reported for attention deficit hyperactivity disorder (ADHD) medications in the pediatric population: a qualitative review of empirical studies (Provisional abstract)      
Ocena efektywnosci klinicznej interferonu beta-1b oraz porownanie bezposrednie interferonu beta-1b z interferonem beta-1a w leczeniu stwardnienia rozsianego [Evaluation of clinical effectiveness of interferon beta 1B and direct comparison of interferons beta 1B and beta 1A in the treatment of sclerosis multiplex] (Provisional abstract)      
Ocena skutecznosci probiotykow w leczeniu czynnosciowych bolow brzucha u dzieci i doroslych: systematyczny przeglad pismiennictwa [Probiotic therapy for functional abdominal pain: a systematic review of randomised controlled trials] (Provisional abstract)      
OctreoScan scintigraphy for gastro-entero-pancreatic neuroendocrine tumours (Structured abstract)      
Octreotide for acute esophageal variceal bleeding: a meta-analysis (Structured abstract)      
Octreotide for advanced hepatocellular carcinoma: a meta-analysis of randomized controlled trials (Structured abstract)      
Octreotide for primary moderate to severe acute pancreatitis: a meta-analysis (Provisional abstract)      
Octreotide therapy for hepatocellular carcinoma: a systematic review of the evidence from randomized controlled trials (Structured abstract)      
Ocular complications in robotic surgery (Provisional abstract)      New 
Ocular side effects following intravitreal injection therapy for retinoblastoma: a systematic review (Structured abstract)      
Ocular toxicity in children exposed in utero to antimalarial drugs: review of the literature (Provisional abstract)      
The odontogenic myxoma: literature review and a case report (Provisional abstract)      
Oesophageal Doppler-guided fluid administration in colorectal surgery: critical appraisal of published clinical trials (Structured abstract)      
Off-clamp versus complete hilar control partial nephrectomy for renal cell carcinoma: a systematic review and meta-analysis (Provisional abstract)      
Off-hour presentation and outcomes in patients with acute myocardial infarction: systematic review and meta-analysis (Structured abstract)      
The off-label treatment of severe hidradenitis suppurativa with TNF-alpha inhibitors: a systematic review (Provisional abstract)      
Off-label use of atypical antipsychotics: an update (Structured abstract)      
Off-label use of azathioprine in dermatology: a systematic review (Provisional abstract)      
Off-label use of bevacizumab: advanced adenocarcinoma of the pancreas (Structured abstract)      
Off-label use of drug-eluting versus bare metal stents: a lesion-specific systematic review of long-term outcomes (Structured abstract)      
Off-label use of medicines in children: can available evidence avoid useless paediatric trials (Structured abstract)      
Off-label use of recombinant factor VIIa for treatment of haemorrhage: results from randomized clinical trials (Provisional abstract)      
Off-label uses for tumor necrosis factor inhibitors in ankylosing spondylitis, ulcerative colitis, and psoriasis (Provisional abstract)      
Off-label uses of bevacizumab: breast and lung cancer indications (Provisional abstract)      
Off-label uses of sorafenib and sunitinib (Provisional abstract)      
Off-label uses of topical vitamin d in dermatology: a systematic review (Provisional abstract)      
Off-pump coronary artery bypass grafting treats high-risk coronary heart disease (Provisional abstract)      
Off-pump coronary artery bypass in patients with left ventricular dysfunction: a meta-analysis (Structured abstract)      
Off-pump coronary artery bypass may increase late mortality: a meta-analysis of randomized trials (Structured abstract)      
Off-pump coronary artery bypass (OPCAB) with the aid of tissue stabilisers (Provisional abstract)      
Off-pump coronary artery bypass sacrifices graft patency: meta-analysis of randomized trials (Structured abstract)      
Off-pump coronary artery bypass surgery and acute kidney injury: a meta-analysis of randomized and observational studies (Structured abstract)      
Off-pump coronary artery bypass surgery and acute kidney injury: a meta-analysis of randomized controlled trials (Structured abstract)      
Off-pump coronary artery bypass surgery may reduce the incidence of stroke in patients with significant left main stem disease (Structured abstract)      
Off-pump coronary artery bypass surgery versus percutaneous coronary intervention: a meta-analysis of randomized and nonrandomized studies (Structured abstract)      
Off-pump coronary artery surgery for reducing mortality and morbidity: meta-analysis of randomized and observational studies (Structured abstract)      
Off-pump coronary surgery may reduce stroke, respiratory failure, and mortality in octogenarians (Provisional abstract)      
Off-pump surgery is associated with reduced occurrence of stroke and other morbidity as compared with traditional coronary artery bypass grafting: a meta-analysis of systematically reviewed trials (Structured abstract)      
Off-pump versus on-pump coronary artery bypass grafting: a systematic review and meta-analysis of propensity score analyses (Structured abstract)      
Off-pump versus on-pump coronary artery bypass surgery: meta-analysis and meta-regression of 13,524 patients from randomized trials (Provisional abstract)      
Off-pump versus on-pump coronary revascularization: meta-analysis of mid- and long-term outcomes (Provisional abstract)      New 
Off-pump versus on-pump revascularization in females: a meta-analysis of observational studies (Provisional abstract)      
Off-pump vs on-pump coronary artery bypass surgery: an updated meta-analysis and meta-regression of randomized trials (Structured abstract)      
Office compared with ambulatory blood pressure in assessing response to anti hypertensive treatment: a meta-analysis (Provisional abstract)      
The OGG1 Ser326Cys polymorphism and the risk of esophageal cancer: a meta-analysis (Provisional abstract)      
Olanzapine: a systematic review and meta-regression of the relationships between dose, plasma concentration, receptor occupancy, and response (Provisional abstract)      
Olanzapine for chemotherapy-induced nausea and vomiting: a systematic review (Provisional abstract)      
Olanzapine in Chinese patients with schizophrenia or bipolar disorder: a systematic literature review (Provisional abstract)      
Olanzapine in the long-term treatment of bipolar disorder: a systematic review and meta-analysis (Structured abstract)      
Olanzapine-induced weight gain in patients with bipolar I disorder: a meta-analysis (Provisional abstract)      
Olanzapine plus fluoxetine for bipolar disorder: a systematic review and meta-analysis (Provisional abstract)      
Older adult medication compliance: integrated review of randomized controlled trials (Structured abstract)      
Older adults' experiences of occupational therapy predischarge home visits: a systematic thematic synthesis of qualitative research (Provisional abstract)      
Older adults' experiences regarding discharge from hospital following orthopaedic intervention: a metasynthesis (Structured abstract)      New 
Older adults' perceptions of technologies aimed at falls prevention, detection or monitoring: a systematic review (Provisional abstract)      
Older driver retraining: a systematic review of evidence of effectiveness (Provisional abstract)      
Older people's participation in and engagement with falls prevention interventions in community settings: an augment to the Cochrane systematic review (Structured abstract)      
Older people's perspectives on fall risk and fall prevention programs: a literature review (Provisional abstract)      
Older people's recruitment, sustained participation, and adherence to falls prevention interventions in institutional settings: a supplement to the Cochrane systematic review (Structured abstract)      
Older people's views in relation to risk of falling and need for intervention: a meta-ethnography (Structured abstract)      
Olfactory identification testing as a predictor of the development of Alzheimer's dementia: a systematic review (Provisional abstract)      
Olfactory outcomes in chronic rhinosinusitis with nasal polyposis after medical treatments: a systematic review and meta-analysis (Provisional abstract)      New 
Ologen implant versus mitomycin c for trabeculectomy: a systematic review and meta-analysis (Provisional abstract)      
OM-85 BV, an immunostimulant in pediatric recurrent respiratory tract infections: a systematic review (Structured abstract)      
Omalizumab: a novel therapy for allergic asthma (Provisional abstract)      
Omalizumab for the treatment of inadequately controlled allergic rhinitis: a systematic review and meta-analysis of randomized clinical trials (Provisional abstract)      
Omalizumab for the treatment of severe persistent allergic asthma: a systematic review and economic evaluation (Provisional abstract)      
Omega 3 and 6 oils for primary prevention of allergic disease: systematic review and meta-analysis (Structured abstract)      
Omega-3 dietary supplements and the risk of cardiovascular events: a systematic review (Structured abstract)      
Omega-3 essential fatty acids therapy for dry eye syndrome: a meta-analysis of randomized controlled studies (Provisional abstract)      
Omega-3 fatty acid supplementation and cognitive function: are smaller dosages more beneficial? (Provisional abstract)      New 
Omega-3 fatty acid supplementation for the treatment of children with attention-deficit/hyperactivity disorder symptomatology: systematic review and meta-analysis (Provisional abstract)      
Omega-3 fatty acid supplementation on lipid profiles in dialysis patients: meta-analysis (Provisional abstract)      
Omega-3 fatty acids ameliorate proteinuria but not renal function in IgA nephropathy: a meta-analysis of randomized controlled trials (Provisional abstract)      
Omega 3 fatty acids and cardiovascular outcomes: Systematic review and meta-analysis (Provisional abstract)      
Omega 3 fatty acids and cognitive health in older people (Structured abstract)      
Omega-3 fatty acids and incident type 2 diabetes: a systematic review and meta-analysis (Provisional abstract)      
Omega-3 fatty acids and inflammatory bowel diseases: a systematic review (Provisional abstract)      
Omega-3 fatty acids as treatments for mental illness: which disorder and which fatty acid? (Structured abstract)      
Omega-3 fatty acids for autistic spectrum disorder: a systematic review (Structured abstract)      
Omega-3 fatty acids for postoperative atrial fibrillation: alone or in combination with antioxidant vitamins? (Provisional abstract)      New 
Omega-3 fatty acids for the treatment of depression: systematic review and meta-analysis (Provisional abstract)      
Omega-3 fatty acids in high-risk cardiovascular patients: a meta-analysis of randomized controlled trials (Provisional abstract)      
Omega 3 fatty acids in the elderly (Provisional abstract)      
Omega-3 fatty acids in the prevention of atrial fibrillation recurrences after cardioversion: a meta-analysis of randomized controlled trials (Provisional abstract)      
Omega-3 fatty acids therapy for IgA nephropathy: a meta-analysis of randomized controlled trials (Provisional abstract)      
Omega-3 for bipolar disorder: Meta-analyses of use in mania and bipolar depression (Provisional abstract)      
Omega-3 long-chain polyunsaturated fatty acids for extremely preterm infants: a systematic review (Provisional abstract)      
Omega-3 polyunsaturated fatty acid and insulin sensitivity: a meta-analysis of randomized controlled trials (Provisional abstract)      
Omega 3 polyunsaturated fatty acids and body weight (Provisional abstract)      
Omega-3 polyunsaturated fatty acids and the treatment of rheumatoid arthritis: a meta-analysis (Provisional abstract)      
Omega-3 supplementation and non-alcoholic fatty liver disease: a systematic review and meta-analysis (Provisional abstract)      
Omental pedicle flaps following proctectomy: a systematic review (Provisional abstract)      
Omentoplasty in abdominoperineal resection: a review of the literature using a systematic approach (Structured abstract)      
Omentoplasty in the prevention of anastomotic leakage after colorectal resection: a meta-analysis (Structured abstract)      
Omentoplasty in the prevention of anastomotic leakage after oesophagectomy: a meta-analysis (Provisional abstract)      New 
Omeprazole: a review of its use in Helicobacter pylori infection, gastro-oesophageal reflux disease and peptic ulcers induced by nonsteroidal anti-inflammatory drugs (Structured abstract)      
Omeprazole and H-2-receptor antagonists in the acute treatment of duodenal ulcer, gastric ulcer and reflux oesophagitis: a meta-analysis (Structured abstract)      
Omission of nitrous oxide during anesthesia reduces the incidence of postoperative nausea and vomiting: a meta-analysis (Structured abstract)      
Omission of the bladder flap at caesarean section reduces delivery time without increased morbidity: a meta-analysis of randomised controlled trials (Structured abstract)      
Omitting antagonism of neuromuscular block. Effect on postoperative nausea and vomiting and risk of residual paralysis: a systematic review (Structured abstract)      
Omitting nitrous oxide in general anaesthesia: meta-analysis of intraoperative awareness and postoperative emesis in randomized controlled trials (Structured abstract)      
On-admission serum uric acid predicts outcomes after acute myocardial infarction: systematic review and meta-analysis of prognostic studies (Provisional abstract)      
On the accuracy of history, physical examination and erythrocyte sedimentation rate in diagnosing low back pain in general practice: a criteria-based review of the literature (Structured abstract)      
On the benefit of probiotics in the management of pouchitis in patients underwent ileal pouch anal anastomosis: a meta-analysis of controlled clinical trials (Structured abstract)      
On the connection between autoimmunity, tic disorders and obsessive-compulsive disorders: a meta-analysis on anti-streptolysin O titres (Provisional abstract)      
On the efficacy of hypnosis: a meta-analytic study (Structured abstract)      
On the feasibility of utilizing allogeneic bone blocks for atrophic maxillary augmentation (Provisional abstract)      New 
On the utility of quantitative diffusion-weighted MR imaging as a tool in differentiation between malignant and benign thyroid nodules (Provisional abstract)      
Onabotulinumtoxin A in the treatment of chronic migraine (Provisional abstract)      
Once-a-day highly active antiretroviral therapy: a systematic review (Structured abstract)      
Once-a-month contraceptive pills in China: a review of available evidence (Provisional abstract)      
Once-daily administration of intranasal corticosteroids for allergic rhinitis: a comparative review of efficacy, safety, patient preference, and cost (Provisional abstract)      
Once-daily aminoglycoside dosing in immunocompetent adults: a meta-analysis (Structured abstract)      
Once-daily aminoglycosides: a meta-analysis of nonneutropenic and neutropenic adults (Structured abstract)      
Once-daily dosing vs. conventional dosing schedule of mesalamine and relapse of quiescent ulcerative colitis: systematic review and meta-analysis (Structured abstract)      
Once-daily extended-release versus twice-daily standard-release tacrolimus in kidney transplant recipients: a systematic review (Provisional abstract)      
Once-daily long-acting beta-agonists for chronic obstructive pulmonary disease: an indirect comparison of olodaterol and indacaterol (Provisional abstract)      
Once daily oral mesalamine compared to conventional dosing for induction and maintenance of remission in ulcerative colitis: a systematic review and meta-analysis (Structured abstract)      
Once-daily versus multiple-daily mesalamine for patients with ulcerative colitis: a meta-analysis (Structured abstract)      
Once versus multiple daily dosing of aminoglycosides for patients with febrile neutropenia: a systematic review and meta-analysis (Structured abstract)      
Oncologic, functional and surgical outcomes of primary Transoral Robotic Surgery for early squamous cell cancer of the oropharynx: a systematic review (Structured abstract)      
Oncologic outcomes of laparoscopic surgery for rectal cancer: a systematic review and meta-analysis of the literature (Structured abstract)      
Oncologic outcomes of transoral laser microsurgery for radiorecurrent laryngeal carcinoma: a systematic review and meta-analysis of English-language literature (Provisional abstract)      
Oncological outcomes of local excision compared with radical surgery after neoadjuvant chemoradiotherapy for rectal cancer: a systematic review and meta-analysis (Provisional abstract)      New 
Oncological superiority of extralevator abdominoperineal resection over conventional abdominoperineal resection: a meta-analysis (Provisional abstract)      
Ondansetron: a meta-analysis on its efficacy to prevent postoperative nausea and vomiting after craniotomy in adults and children (Provisional abstract)      
Ondansetron in the prophylaxis of postoperative vomiting: a meta-analysis (Structured abstract)      
One-leg standing test for elderly populations (Structured abstract)      
One-shot versus gradual dilation technique for tract creation in percutaneous nephrolithotomy: a systematic review and meta-analysis (Provisional abstract)      
One-stage bilateral total hip arthroplasty: a systematic review and meta-analysis (Provisional abstract)      
One stage bilateral total hip arthroplasty, is it safe? A meta-analysis (Structured abstract)      
One-stage versus two-stage implant placement: a Cochrane systematic review of randomised controlled clinical trials (Structured abstract)      
One-to-one volunteer support programs for people with cancer: a review of the literature (Structured abstract)      
One versus double burr holes for treating chronic subdural hematoma meta-analysis (Provisional abstract)      
One versus two inseminations per cycle in intrauterine insemination with sperm from patients' husbands: a systematic review of the literature (Provisional abstract)      
One versus two venous anastomoses in microsurgical free flaps: a meta-analysis (Provisional abstract)      
One-year incidence rates of tardive dyskinesia in children and adolescents treated with second-generation antipsychotics: a systematic review (Provisional abstract)      
One-year outcomes of coronary artery bypass graft surgery versus percutaneous coronary intervention with multiple stenting for multisystem disease: a meta-analysis of individual patient data from randomized clinical trials (Structured abstract)      
One-year postoperative effects of gastric bypass on type 2 diabetes in mainland China: a meta-analysis (Provisional abstract)      
An ongoing struggle: a mixed-method systematic review of interventions, barriers and facilitators to achieving optimal self-care by children and young people with Type 1 diabetes in educational settings (Provisional abstract)      New 
Online and social networking interventions for the treatment of depression in young people: a systematic review (Provisional abstract)      New 
Online cancer support groups: a review of the research literature (Structured abstract)      
Online continuing medical education (CME) for GPs: does it work? A systematic review (Provisional abstract)      New 
Online counseling and therapy for mental health problems: a systematic review of individual synchronous interventions using chat (Structured abstract)      
Online interventions for social marketing health behavior change campaigns: a meta-analysis of psychological architectures and adherence factors (Structured abstract)      
Online programs as tools to improve parenting: a meta-analytic review (Provisional abstract)      
Online, social media and mobile technologies for psychosis treatment: a systematic review on novel user-led interventions (Provisional abstract)      
Online social networking services in the management of patients with diabetes mellitus: systematic review and meta-analysis of randomised controlled trials (Provisional abstract)      
Online support for smoking cessation: a systematic review of the literature (Structured abstract)      
Oocyte vitrification in the 21st century and post-warming fertility outcomes: a systematic review and meta-analysis (Provisional abstract)      
Open and closed endotracheal suction systems in mechanically ventilated intensive care patients: a meta-analysis (Structured abstract)      
Open and endovascular repair of juxtarenal abdominal aortic aneurysms: a systematic review (Provisional abstract)      New 
Open and endovascular surgery for the treatment of abdominal aortic aneurism: review of the available evidence. (Provisional abstract)      
Open capsular shift and arthroscopic capsular plication for treatment of multidirectional instability (Provisional abstract)      
Open compared with closed haemorrhoidectomy: meta-analysis of randomized controlled trials (Provisional abstract)      
Open conservation partial laryngectomy for laryngeal cancer: a systematic review of English language literature (Structured abstract)      
Open-label glucocorticoids modulate dexamethasone trial results in preterm infants (Provisional abstract)      
Open mesh techniques for inguinal hernia repair: a meta-analysis of randomized controlled trials (Structured abstract)      
Open non-microsurgical, laparoscopic or open microsurgical varicocelectomy for male infertility: a meta-analysis of randomized controlled trials (Provisional abstract)      
Open or closed diagnostic peritoneal lavage for abdominal trauma: a meta-analysis (Structured abstract)      
Open preperitoneal repair versus Lichtenstein repair for inguinal hernia: a systematic review (Provisional abstract)      
Open reduction and closed reduction internal fixation in treatment of femoral neck fractures: a meta-analysis (Provisional abstract)      
Open reduction and internal fixation versus external fixation and/or Kirschner wires for distal radius fractures. A systematic review (Provisional abstract)      
Open reduction and internal fixation versus external fixation for unstable distal radial fractures: a meta-analysis (Provisional abstract)      
Open reduction and internal-fixation versus radial head replacement in treatment of Mason type III radial head fractures (Provisional abstract)      
Open reduction and internal fixation versus total elbow arthroplasty for the treatment of geriatric distal humerus fractures: a systematic review and meta-analysis (Provisional abstract)      
Open repair, endovascular repair, and conservative management of true splenic artery aneurysms (Provisional abstract)      New 
Open retropubic colposuspension for urinary incontinence in women: a short version Cochrane review (Structured abstract)      
Open surgery versus nonoperative treatments for paediatric trigger thumb: a systematic review (Provisional abstract)      
Open surgical repair for chronic type B aortic dissection: a systematic review (Provisional abstract)      New 
Open transinguinal preperitoneal mesh repair of inguinal hernia: a targeted systematic review and meta-analysis of published randomized controlled trials (Provisional abstract)      
Open versus arthroscopic surgical treatment of chronic proximal patellar tendinopathy. A systematic review (Provisional abstract)      
Open versus closed treatment of unilateral moderately displaced mandibular condylar fractures: a meta-analysis of randomized controlled trials (Provisional abstract)      
Open versus endoscopic carpal tunnel release: a meta-analysis of randomized controlled trials (Provisional abstract)      New 
Open versus endovascular repair of abdominal aortic aneurysm in the elective and emergent setting in a pooled population of 37,781 patients: a systematic review and meta-analysis (Provisional abstract)      
Open versus endovascular repair of traumatic aortic rupture: a systematic review (Structured abstract)      
Open versus endovascular stent graft repair of abdominal aortic aneurysms: a meta-analysis of randomized trials (Structured abstract)      
Open versus laparoscopic incisional hernia repair: something different from a meta-analysis (Structured abstract)      
Open versus laparoscopic pyloromyotomy for hypertrophic pyloric stenosis: a systematic review and meta-analysis focusing on major complications (Provisional abstract)      
Open versus laparoscopic pyloromyotomy for pyloric stenosis: a meta-analysis of randomized controlled trials (Provisional abstract)      
Open versus minimally invasive transforaminal lumbar interbody fusion for single segment degenerative lumbar disease: a meta-analysis (Provisional abstract)      
Open versus transanal pull-through for Hirschsprung disease: a systematic review on long-term outcome (Provisional abstract)      
Open vs laparoscopic approach for reversal of Hartmann's procedure: a systematic review (Provisional abstract)      
Open vs laparoscopic repair of full-thickness rectal prolapse: a re-meta-analysis (Structured abstract)      
Opening- or closing-wedged high tibial osteotomy: a meta-analysis of clinical and radiological outcomes (Provisional abstract)      
Operationalised psychodynamic diagnostics in childhood and adolescence (OPD-CA). A systematic review of empirical validation (Provisional abstract)      
Operative and nonoperative treatment of clavicle fractures in adults (Structured abstract)      
Operative management of rib fractures in the setting of flail chest: a systematic review and meta-analysis (Provisional abstract)      
Operative management of temporomandibular joint ankylosis: a systematic review and meta-analysis (Provisional abstract)      
Operative or conservative treatment in patients with Rockwood type III acromioclavicular dislocation: a systematic review and update of current literature (Provisional abstract)      
Operative or conservative treatment of anterior cruciate ligament rupture: a systematic review of the literature (Provisional abstract)      
Operative outcomes of adult living donor liver transplantation and deceased donor liver transplantation: a systematic review and meta-analysis (Provisional abstract)      
Operative time and other outcomes of the electrothermal bipolar vessel sealing system (LigaSure) versus other methods for surgical hemostasis: a meta-analysis (Structured abstract)      
Operative treatment of chondral defects in the glenohumeral joint (Provisional abstract)      
Operative treatment of peripheral lymphedema: a systematic meta-analysis of the efficacy and safety of lymphovenous microsurgery and tissue transplant (Provisional abstract)      
Operative treatment of peripheral lymphedema: a systematic meta-analysis of the efficacy and safety of lymphovenous microsurgery and tissue transplant (Provisional abstract)      
Operative treatment of ulnar impaction syndrome: a systematic review (Provisional abstract)      
Operative versus conservative treatment for patellar dislocation: a meta-analysis of 7 randomized controlled trials (Provisional abstract)      
Operative versus non-operative management following Rockwood grade III acromioclavicular separation: a meta-analysis of the current evidence base (Provisional abstract)      
Operative versus non-operative management of patellar dislocation: a meta-analysis (Provisional abstract)      
Operative versus non-operative treatment for clavicle fracture: a meta-analysis (Provisional abstract)      
Operative versus nonoperative care of displaced midshaft clavicular fractures: a meta-analysis of randomized clinical trials (Structured abstract)      
Operative versus nonoperative management of acute Achilles tendon ruptures: a quantitative systematic review of randomized controlled trials (Structured abstract)      
Operative versus nonoperative treatment for acute Achilles tendon rupture: a meta-analysis based on current evidence (Provisional abstract)      
Operative versus nonoperative treatment for complex proximal humeral fractures: a meta-analysis of randomized controlled trials (Provisional abstract)      
Operative versus nonoperative treatment for displaced intra-articular calcaneal fractures: a systematic review (Provisional abstract)      
Operative versus nonoperative treatment for displaced midshaft clavicular fractures: a meta-analysis of randomized clinical trials (Provisional abstract)      New 
Operative versus nonoperative treatment in complex proximal humeral fractures (Provisional abstract)      
Operative versus nonoperative treatment in the management of midshaft clavicular fractures: a meta-analysis of randomized controlled trials (Provisional abstract)      
Operative versus nonoperative treatment of acute Achilles tendon ruptures: a quantitative review (Structured abstract)      
Operative versus nonoperative treatment of displaced midshaft clavicle fractures in adults: a systematic review (Provisional abstract)      
Operative versus nonoperative treatment of knee dislocations: a meta-analysis (Structured abstract)      
Ophthalmic complications of dengue fever: a systematic review (Provisional abstract)      New 
Ophthalmological adverse effects of (chiropractic) upper spinal manipulation: evidence from recent case reports (Structured abstract)      
Opiate substitution treatment and HIV transmission in people who inject drugs: systematic review and meta-analysis (Structured abstract)      
Opioid analgesia for acute abdominal pain in children: a systematic review and meta-analysis (Provisional abstract)      New 
Opioid and benzodiazepine use in end-stage renal disease: a systematic review (Provisional abstract)      
Opioid dose titration for severe cancer pain: a systematic evidence-based review (Provisional abstract)      
Opioid-induced hyperalgesia in patients after surgery: a systematic review and a meta-analysis (Provisional abstract)      
Opioid-induced respiratory depression in paediatrics: a review of case reports (Provisional abstract)      
Opioid-sparing effects of perioperative paracetamol and nonsteroidal anti-inflammatory drugs (NSAIDs) in children (Provisional abstract)      
Opioids added to local anesthetics for single-shot intrathecal anesthesia in patients undergoing minor surgery: a meta-analysis of randomized trials (Structured abstract)      
Opioids compared with placebo or other treatments for chronic low back pain: an update of the Cochrane review (Structured abstract)      
Opioids for chronic noncancer pain: a meta-analysis of effectiveness and side effects (Structured abstract)      
Opioids for chronic noncancer pain: prediction and identification of aberrant drug-related behaviors; a review of the evidence for an American pain society and American academy of pain medicine clinical practice guideline (Structured abstract)      
Opioids for neonates receiving mechanical ventilation: a systematic review and meta-analysis (Structured abstract)      
Opioids in chronic neuropathic pain: a systematic review and meta-analysis of efficacy, tolerability and safety in randomized placebo-controlled studies of at least 4 weeks duration (Provisional abstract)      New 
Opioids in chronic non-cancer pain: systematic review of efficacy and safety (Structured abstract)      
Opioids in the management of pain in diabetic neuropathy (Provisional abstract)      
Opportunistic infections with anti-tumor necrosis factor-alpha therapy in inflammatory bowel disease: meta-analysis of randomized controlled trials (Provisional abstract)      
Oppositional defiant disorder: a systematic review of evidence of intervention effectiveness (Provisional abstract)      
Oprelvekin: a review of its pharmacology and therapeutic potential in chemotherapy-induced thrombocytopenia (Structured abstract)      
Optic and otic side effects of molecular targeted therapies (Provisional abstract)      New 
Optical coherence tomography diagnostics for onco-urology. Review of clinical perspectives (Provisional abstract)      
Optical coherence tomography for the diagnosis, monitoring and guiding of treatment for neovascular age-related macular degeneration: a systematic review and economic evaluation (Provisional abstract)      
Optical coherence tomography for the diagnosis of neovascular age-related macular degeneration: a systematic review (Provisional abstract)      New 
Optical coherence tomography versus stereoscopic fundus photography or biomicroscopy for diagnosing diabetic macular edema: a systematic review (Structured abstract)      
Optimal anticoagulation duration of unfractionated and low molecular weight heparin in non-ST elevation acute coronary syndrome: a systematic review of the literature (Provisional abstract)      New 
Optimal antithrombotic management of anticoagulated patients with a history of myocardial infarction (Structured abstract)      
Optimal approach to the management of intrathoracic esophageal leak following esophagectomy: a systematic review (Provisional abstract)      New 
Optimal bowel cleansing for colonoscopy: split the dose! A series of meta-analyses of controlled studies (Provisional abstract)      New 
Optimal cut-off score for diagnosing depression with the Patient Health Questionnaire (PHQ-9): a meta-analysis (Structured abstract)      
Optimal dosage and route of administration of methotrexate in rheumatoid arthritis: a systematic review of the literature (Structured abstract)      
Optimal dosages for melatonin supplementation therapy in older adults: a systematic review of current literature (Provisional abstract)      
Optimal dosing of antibiotics in critically ill patients using continuous/extended infusions: a systematic review and meta-analysis (Provisional abstract)      
Optimal duration of combined psychotherapy and pharmacotherapy for patients with moderate and severe depression: a meta-analysis (Structured abstract)      
The optimal duration of compression therapy following varicose vein surgery: A meta-analysis of randomized controlled trials (Provisional abstract)      
Optimal duration of dual antiplatelet therapy after drug-eluting stent implantation: a meta-analysis of three randomized controlled trials (Provisional abstract)      
Optimal duration of dual-antiplatelet therapy following drug-eluting stent implantation: a meta-analysis (Provisional abstract)      
Optimal duration of dual antiplatelet therapy in patients undergoing percutaneous coronary intervention: a meta-analysis (Provisional abstract)      
Optimal duration of first-line chemotherapy for advanced non-small cell lung cancer: a systematic review with meta-analysis (Structured abstract)      
The optimal duration of progesterone supplementation in pregnant women after IVF/ICSI: a meta-analysis (Structured abstract)      
Optimal duration of pulmonary rehabilitation for individuals with chronic obstructive pulmonary disease: a systematic review (Structured abstract)      
Optimal duration of treatment for HCV genotype 1 infection in slow responders: a meta-analysis (Provisional abstract)      
Optimal excision margins for primary cutaneous melanoma: a systematic review and meta-analysis (Provisional abstract)      
Optimal frequency of imiquimod (Aldara) 5% cream for the treatment of external genital warts in immunocompetent adults: a meta-analysis (Structured abstract)      
Optimal frequency of shock wave lithotripsy in urolithiasis treatment: a systematic review and meta-analysis of randomized controlled trials (Provisional abstract)      
Optimal glycemic control in neurocritical care patients: a systematic review and meta-analysis (Provisional abstract)      
Optimal INR for prevention of stroke and death in atrial fibrillation: a critical appraisal (Provisional abstract)      
Optimal insulin regimens in type 2 diabetes mellitus: systematic review and meta-analyses (Structured abstract)      
The optimal intensity of vitamin K antagonists in patients with mechanical heart valves: a meta-analysis (Structured abstract)      
Optimal length of antiviral therapy in patients with hepatitis C virus genotypes 2 and 3: a meta-analysis (Structured abstract)      
Optimal loading dose for the initiation of warfarin: a systematic review (Structured abstract)      
Optimal low-molecular-weight heparin regimen in major orthopaedic surgery (Provisional abstract)      
Optimal management of fatigue in patients with systemic lupus erythematosus: a systematic review (Provisional abstract)      New 
Optimal method of coronary revascularization in patients receiving dialysis: systematic review (Structured abstract)      
Optimal number of oral implants for fixed reconstructions: a review of the literature (Provisional abstract)      
Optimal oral antithrombotic regimes for patients with acute coronary syndrome: a network meta-analysis (Provisional abstract)      
Optimal patient education for cancer pain: a systematic review and theory-based meta-analysis (Provisional abstract)      
Optimal prophylactic and definitive therapy for bicalutamide-induced gynecomastia: results of a meta-analysis (Provisional abstract)      
Optimal provision of needle and syringe programmes for injecting drug users: a systematic review (Structured abstract)      
Optimal schedule of Bacillus Calmette-Guerin for non-muscle-invasive bladder cancer: a meta-analysis of comparative studies (Provisional abstract)      
Optimal strategies for identifying kidney disease in diabetes: properties of screening tests, progression of renal dysfunction and impact of treatment ? systematic review and modelling of progression and cost-effectiveness (Provisional abstract)      
Optimal strategies for monitoring response to antiretroviral therapy in HIV-infected adults, adolescents, children and pregnant women: a systematic review (Provisional abstract)      
Optimal strategy of coronary revascularization in chronic kidney disease patients: a meta-analysis (Provisional abstract)      
The optimal timing for anterior cruciate ligament reconstruction with respect to the risk of postoperative stiffness (Provisional abstract)      
Optimal timing of cerebral MRI in preterm infants to predict long-term neurodevelopmental outcome: a systematic review (Provisional abstract)      
Optimal timing of coronary angiography and potential intervention in non-ST-elevation acute coronary syndromes (Structured abstract)      
Optimal timing of coronary invasive strategy in non-ST-segment elevation acute coronary syndromes: a systematic review and meta-analysis (Structured abstract)      
Optimal treatment of partial thickness burns in children: a systematic review (Provisional abstract)      
The optimal treatment of type II and III odontoid fractures in the elderly: a systematic review (Provisional abstract)      
Optimierung der antipsychotischen Therapie mit Olanzapin durch Augmentationsstrategien: eine kritische Literaturubersicht [Optimizing the antipsychotic potency of olanzapine by augmentation: a critical review] (Provisional abstract)      
Optimisation of infection prevention and control in acute health care by use of behaviour change: a systematic review (Provisional abstract)      
Optimising ankle sprain prevention: A critical review and practical appraisal of the literature (Provisional abstract)      
Optimising care of the hospitalised elderly: a literature review and suggestions for future research (Structured abstract)      
Optimising treatment resources for OCD: a review of the evidence base for technology-enhanced delivery (Provisional abstract)      
Optimization of antiretroviral therapy in HIV-infected children under 3 years of age: a systematic review (Structured abstract)      
Optimization of sympathectomy to treat palmar hyperhidrosis: the systematic review and meta-analysis of studies published during the past decade (Provisional abstract)      
Optimizing GnRH antagonist administration: meta-analysis of fixed versus flexible protocol (Structured abstract)      
Optimizing pulmonary rehabilitation in chronic obstructive pulmonary disease: practical issues - a Canadian Thoracic Society Clinical Practice Guideline (Provisional abstract)      
Optimizing the benefits and minimizing the risks of enteral nutrition in the critically ill: role of small bowel feeding (Provisional abstract)      
Optimizing the efficacy of first-line chemotherapy plus bevacizumab in metastatic colorectal cancer: analysis of multiple methods (Structured abstract)      
Optimizing vitamin D status to reduce colorectal cancer risk: an evidentiary review (Structured abstract)      
Optimum methadone compliance testing: an evidence-based analysis (Provisional abstract)      
Optimum methadone compliance testing (Provisional abstract)      
Optimum radiation fractionation for T1 NO glottic (vocal cord) carcinoma (Provisional abstract)      
Options and adjuvants in surgery for pterygium: a report by the American Academy of Ophthalmology (Provisional abstract)      
Options for managing severe acetabular bone loss in revision hip arthroplasty. A systematic review (Provisional abstract)      
Oral Acetyl-L-Carnitine treatment in hepatic encephalopathy: view of evidence-based medicine (Provisional abstract)      
Oral adjuvant clodronate therapy could improve overall survival in early breast cancer: results from an updated systematic review and meta-analysis (Provisional abstract)      
Oral and inactivated poliovirus vaccines in the newborn: a review (Provisional abstract)      
Oral and maxillofacial surgery and chronic painful temporomandibular disorders: a systematic review (Provisional abstract)      
Oral anti-diabetic drugs for the prevention of Type 2 diabetes (Structured abstract)      
Oral antiarrhythmic drugs in converting recent onset atrial fibrillation (Provisional abstract)      
Oral antibiotic prophylaxis reduces spontaneous bacterial peritonitis occurrence and improves short-term survival in cirrhosis: a meta-analysis (Structured abstract)      
Oral antibiotic therapy for the treatment of infective endocarditis: a systematic review (Provisional abstract)      
Oral anticoagulant therapy in patients with coronary artery disease: a meta-analysis (Structured abstract)      
Oral anticoagulant therapy in patients with mechanical heart valve and intracranial haemorrhage: a systematic review (Structured abstract)      
Oral anticoagulants and non-cardioembolic stroke prevention (Structured abstract)      
Oral anticoagulation continuation compared with heparin bridging therapy among high risk patients undergoing implantation of cardiac rhythm devices: a meta-analysis (Provisional abstract)      
Oral anticoagulation for pulmonary arterial hypertension: systematic review and meta-analysis (Provisional abstract)      
Oral anticoagulation therapy in heart failure patients in sinus rhythm: a systematic review and meta-analysis (Provisional abstract)      
Oral antidiabetic drugs and regression from prediabetes to normoglycemia: a meta-analysis (Structured abstract)      
Oral antihistamines for the symptom of nasal obstruction in persistent allergic rhinitis: a systematic review of randomized controlled trials (Structured abstract)      
Oral antihypertensive therapy for severe hypertension in pregnancy and postpartum: a systematic review (Provisional abstract)      
Oral antispastic drugs in nonprogressive neurologic diseases: a systematic review (Provisional abstract)      
Oral appliances for obstructive sleep apnea: an evidence-based analysis (Provisional abstract)      
Oral appliances for the treatment of snoring and obstructive sleep apnea: a review (Structured abstract)      
Oral aspirin in postoperative pain: a quantitative systematic review (Structured abstract)      
Oral bisphosphonates and the risk of colorectal cancer: a meta-analysis (Provisional abstract)      
Oral branched-chain amino acids have a beneficial effect on manifestations of hepatic encephalopathy in a systematic review with meta-analyses of randomized controlled trials (Provisional abstract)      
Oral Chinese herbal medicine (CHM) as an adjuvant treatment during chemotherapy for non-small cell lung cancer: a systematic review (Structured abstract)      
Oral Chinese herbal medicine combined with pharmacotherapy for psoriasis vulgaris: a systematic review (Provisional abstract)      New 
Oral Chinese herbal medicine combined with pharmacotherapy for stable COPD: a systematic review of effect on BODE index and Six Minute Walk Test (Provisional abstract)      
Oral Chinese herbal medicine for improvement of quality of life in patients with chronic heart failure: a systematic review and meta-analysis (Provisional abstract)      
Oral Chinese herbal medicine for improvement of quality of life in patients with chronic heart failure: a systematic review and meta-analysis (Provisional abstract)      
Oral chinese herbal medicine for improvement of quality of life in patients with stable chronic obstructive pulmonary disease: a systematic review (Provisional abstract)      
Oral Chinese proprietary medicine for angina pectoris: an overview of systematic reviews/meta-analyses (Provisional abstract)      New 
Oral chlorhexidine in the prevention of ventilator-associated pneumonia in critically ill adults in the ICU: a systematic review (Provisional abstract)      
Oral cholinesterase inhibitor add-on therapy for cognitive enhancement in schizophrenia: a quantitative systematic review, Part I (Provisional abstract)      
Oral citicoline in acute ischemic stroke: an individual patient data pooling analysis of clinical trials (Structured abstract)      
Oral contraception and the risk of hepatocellular carcinoma (Structured abstract)      
Oral contraceptive pills as primary prevention for ovarian cancer: a systematic review and meta-analysis (Provisional abstract)      
Oral contraceptive pretreatment significantly reduces ongoing pregnancy likelihood in gonadotropin-releasing hormone antagonist cycles: an updated meta-analysis (Provisional abstract)      
Oral contraceptive use and breast or ovarian cancer risk in BRCA1/2 carriers: a meta-analysis (Provisional abstract)      
Oral contraceptive use and kidney cancer risk among women: evidence from a meta-analysis (Provisional abstract)      New 
Oral contraceptive use and risk of breast cancer: a meta-analysis of prospective cohort studies (Provisional abstract)      
Oral contraceptive use and risk of breast, cervical, colorectal, and endometrial cancers: a systematic review (Provisional abstract)      
Oral contraceptive use and uterine leiomyoma risk: a meta-analysis based on cohort and case-control studies (Provisional abstract)      
Oral contraceptive use as a risk factor for premenopausal breast cancer: a meta-analysis (Provisional abstract)      
Oral contraceptive use for the primary prevention of ovarian cancer (Provisional abstract)      
Oral contraceptives and colorectal cancer risk: a meta-analysis (Structured abstract)      
Oral contraceptives and colorectal cancer risk: a systematic review and meta-analysis (Structured abstract)      
Oral contraceptives and risk of endometriosis: a systematic review and meta-analysis (Structured abstract)      
Oral contraceptives and risk of ovarian cancer and breast cancer among high-risk women: a systematic review and meta-analysis (Provisional abstract)      
Oral contraceptives and the risk of subarachnoid hemorrhage: a meta-analysis (Structured abstract)      
Oral contraceptives and venous thromboembolism: a quantitative discussion of the uncertainties (Structured abstract)      
Oral contraceptives, hormone replacement therapy, thrombophilias and risk of venous thromboembolism: a systematic review. The Thrombosis: Risk and Economic Assessment of Thrombophilia Screening (TREATS) Study (Structured abstract)      
Oral contraceptives use and the risk of myocardial infarction: a meta-analysis (Structured abstract)      
Oral corticosteroid use is effective for cutaneous hemangiomas: an evidence-based evaluation (Structured abstract)      
Oral corticosteroids in the management of adult chronic rhinosinusitis with and without nasal polyps: an evidence-based review with recommendations (Provisional abstract)      
Oral cyclo-oxygenase 2 inhibitors versus other oral analgesics for acute soft tissue injury: systematic review and meta-analysis (Provisional abstract)      
Oral decontamination for prevention of pneumonia in mechanically ventilated adults: systematic review and meta-analysis (Structured abstract)      
Oral direct factor Xa inhibitors versus low-molecular-weight heparin to prevent venous thromboembolism in patients undergoing total hip or knee replacement: a systematic review and meta-analysis (Structured abstract)      
Oral drugs for hypertensive urgencies: systematic review and meta-analysis (Provisional abstract)      
Oral erythromycin and symptomatic relief of gastroparesis: a systematic review (Structured abstract)      
Oral essential fatty acid supplementation in atopic dermatitis: a meta-analysis of placebo-controlled trials (Structured abstract)      
Oral estrogen replacement therapy versus placebo for hot flushes: a systematic review (Structured abstract)      
Oral feeding options for people with dementia: a systematic review (Structured abstract)      
Oral fluphenazine versus placebo for schizophrenia: a Cochrane systematic review of 40 years of randomised controlled trials (Structured abstract)      
Oral ginseng formulae for stable chronic obstructive pulmonary disease: a systematic review (Provisional abstract)      
The oral glucose tolerance test for the diagnosis of diabetes mellitus in patients during acute coronary syndrome hospitalization: a meta-analysis of diagnostic test accuracy (Provisional abstract)      
Oral health advice for people with serious mental illness (Structured abstract)      
Oral health care in older people in long term care facilities: a systematic review of implementation strategies (Provisional abstract)      
Oral huangqi formulae for stable chronic obstructive pulmonary disease: a systematic review and meta-analysis (Provisional abstract)      
Oral hygiene care for adults with dementia in residential aged care facilities (Provisional abstract)      
Oral hygiene with chlorhexidine on the prevention of ventilator-associated pneumonia in intubated patients: a systematic review of randomized clinical trials (Provisional abstract)      
Oral hypoglycemic agents vs insulin in management of gestational diabetes: a systematic review and metaanalysis (Structured abstract)      
Oral ibuprofen and diclofenac in post-operative pain: a quantitative systematic review (Structured abstract)      
Oral ibuprofen versus intravenous ibuprofen or intravenous indomethacin for the treatment of patent ductus arteriosus in preterm infants: a systematic review and meta-analysis (Provisional abstract)      
Oral immunotherapy for IgE-mediated cow's milk allergy: a systematic review and meta-analysis (Provisional abstract)      
Oral implants in radiated patients: a systematic review (Structured abstract)      
Oral L-arginine supplementation in acute myocardial infarction therapy: a meta-analysis of randomized controlled trials (Structured abstract)      
Oral mechanical bowel preparation for colorectal surgery (Provisional abstract)      
Oral methadone for chronic noncancer pain: a systematic literature review of reasons for administration, prescription patterns, effectiveness, and side effects (Structured abstract)      
Oral micronutrient supplementation and surgical wound treatment (Provisional abstract)      
Oral mucolytic drugs for exacerbations of chronic obstructive pulmonary disease: systematic review (Structured abstract)      
The oral mucosa graft: a systematic review (Provisional abstract)      
Oral nitrogen-containing bisphosphonates: a systematic review of randomized clinical trials and vertebral fractures (Structured abstract)      
Oral nutritional interventions in malnourished patients with cancer: a systematic review and meta-analysis (Structured abstract)      
Oral nutritional support of older (65 years+) medical and surgical patients after discharge from hospital: systematic review and meta-analysis of randomized controlled trials (Provisional abstract)      
Oral opioid analgesics vs spinal steroid injections in the treatment of low back pain syndromes (Structured abstract)      
Oral or transdermal opioids for osteoarthritis of the knee or hip (Structured abstract)      
Oral panax notoginseng preparation for coronary heart disease: a systematic review of randomized controlled trials (Provisional abstract)      
Oral panax notoginseng preparation for coronary heart disease: a systematic review of randomized controlled trials (Provisional abstract)      
Oral Pentasa in the treatment of active Crohn's disease: a meta-analysis of double-blind, placebo-controlled trials (Structured abstract)      
Oral phosphodiesterase-5 inhibitors and hormonal treatments for erectile dysfunction: a systematic review and meta-analysis (Structured abstract)      
Oral progestogens vs levonorgestrel-releasing intrauterine system for endometrial hyperplasia: a systematic review and metaanalysis (Provisional abstract)      
Oral protein and energy supplementation in older people: a systematic review of randomized trials (Structured abstract)      
Oral purified bacterial extracts in acute respiratory tract infections in childhood: a systematic quantitative review (Provisional abstract)      
Oral purified bacterial extracts in chronic bronchitis and COPD: systematic review (Structured abstract)      
Oral rehabilitation with dental implants in irradiated patients: a meta-analysis on implant survival (Provisional abstract)      
Oral rehydration versus intravenous therapy for treating dehydration due to gastroenteritis in children: a meta-analysis of randomised controlled trials (Structured abstract)      
Oral retinoids for the prevention of skin cancers in solid organ transplant recipients: a systematic review of randomized controlled trials (Structured abstract)      
Oral rifampin for eradication of Staphylococcus aureus carriage from healthy and sick populations: a systematic review of the evidence from comparative trials (Provisional abstract)      
Oral rifampin for prevention of S. aureus carriage-related infections in patients with renal failure: a meta-analysis of randomized controlled trials (Provisional abstract)      
Oral sodium phosphate versus polyethylene glycol-electrolyte lavage solution for colonoscopy preparation: a systematic review (Provisional abstract)      
Oral targeted therapies in the treatment of pulmonary arterial hypertension: a meta-analysis of clinical trials (Provisional abstract)      New 
Oral therapy for onychomycosis: an evidence-based review (Provisional abstract)      
Oral topical decontamination for preventing ventilator-associated pneumonia: a systematic review and meta-analysis of randomized controlled trials (Provisional abstract)      
Oral treatments for toenail onychomycosis: a systematic review (Structured abstract)      
Oral ulcers, a little known adverse effect of alendronate: review of the literature (Structured abstract)      
Oral uracil-tegafur plus leucovorin vs fluorouracil bolus plus leucovorin for advanced colorectal cancer: a meta-analysis of five randomized controlled trials (Structured abstract)      
Oral, vaginal and sublingual misoprostol for induction of labor (Provisional abstract)      
Oral valdecoxib and injected parecoxib for acute postoperative pain: a quantitative systematic review (Structured abstract)      
Oral vasoactive medication in intermittent claudication: utile or futile? (Structured abstract)      
Oral versus depot antipsychotic drugs for schizophrenia: a critical systematic review and meta-analysis of randomised long-term trials (Structured abstract)      
Oral versus intra-vaginal imidazole and triazole anti-fungal agents for the treatment of uncomplicated vulvovaginal candidiasis (thrush): a systematic review (Structured abstract)      
Oral versus intravenous antibiotic treatment for febrile neutropenia in cancer patients: a systematic review and meta-analysis of randomized trials (Structured abstract)      
Oral versus intravenous antibiotics in treatment of paediatric febrile neutropenia (Provisional abstract)      
Oral vitamin B12 versus intramuscular vitamin B12 for vitamin B12 deficiency: a systematic review of randomized controlled trials (Structured abstract)      
Oral vitamin K2 analogs for hepatocellular carcinoma after surgery: a meta-analysis (Provisional abstract)      
Oral zinc supplementation for the treatment of acute diarrhea in children: a systematic review and meta-analysis (Provisional abstract)      
Order sets in health care: a systematic review of their effects (Structured abstract)      
Organ and tissue donation in clinical settings: a systematic review of the impact of interventions aimed at health professionals (Provisional abstract)      
Organ dysfunction in patients with left ventricular impairment: what is the effect of cardiopulmonary bypass? (Provisional abstract)      
Organisation of asthma care: what difference does it make. A systematic review of the literature (Structured abstract)      
Organizational change: a way to increase colon, breast and cervical cancer screening in primary care practices (Structured abstract)      
Organizational outcomes of youth involvement in organizational decision making: a synthesis of qualitative research (Provisional abstract)      
Organizational wellness programs: a meta-analysis (Structured abstract)      
Orientation and mobility training for partially-sighted older adults using an identification cane: a systematic review (Provisional abstract)      
Orlistat and sibutramine beyond weight loss (Structured abstract)      
Oropharyngeal dysphagia after anterior cervical spine surgery: a review (Provisional abstract)      
Ortho-geriatric care models and outcomes in hip fracture patients: a systematic review and meta-analysis (Structured abstract)      
Ortho-geriatric service: a literature review comparing different models (Provisional abstract)      
Orthodontic adhesives: a systematic review (Structured abstract)      
Orthodontic anchorage: a systematic review (Structured abstract)      
Orthodontic retention: a systematic review (Structured abstract)      
Orthodontic treatment of periodontal defects: a systematic review (Provisional abstract)      
Orthodontics and temporomandibular disorder: a meta-analysis (Structured abstract)      
Orthognathic treatment and temporomandibular disorders: a systematic review. Part 2: Signs and symptoms and meta-analyses (Structured abstract)      
Orthopedic treatment outcomes in Class III malocclusion: a systematic review (Provisional abstract)      
Orthosis for thoracolumbar burst fractures without neurologic deficit: a systematic review of prospective randomized controlled trials (Provisional abstract)      
Orthostatic hypotension and the risk of congestive heart failure: a meta-analysis of prospective cohort studies (Provisional abstract)      
Orthotic devices for tennis elbow: a systematic review (Structured abstract)      
The orthotic effect of functional electrical stimulation on the improvement of walking in stroke patients with a dropped foot: a systematic review (Provisional abstract)      
Orthotic effect of functional electrical stimulation on the improvement of walking in stroke patients with foot drop: a systematic review (Provisional abstract)      
Orthotopic liver transplantation: T-tube or not T-tube? Systematic review and meta-analysis of results (Structured abstract)      
Oseltamivir dosing in critically ill patients with severe influenza (Provisional abstract)      
Oseltamivir for influenza in adults and children: systematic review of clinical study reports and summary of regulatory comments (Provisional abstract)      
Oseltamivir for the treatment of suspected influenza: a clinical and economic assessment (Structured abstract)      
Osmotic and stimulant laxatives for the management of childhood constipation (Structured abstract)      
Osseointegration of dental implants in patients undergoing bisphosphonate treatment: a literature review (Provisional abstract)      
Osteoarthritis and the postmenopausal woman: epidemiological, magnetic resonance imaging, and radiological findings (Structured abstract)      
Osteoconductive bone graft extenders in posterolateral thoracolumbar spinal fusion: a systematic review (Provisional abstract)      
Osteogenic protein-1 for long bone nonunion (Provisional abstract)      
Osteoid osteoma treated by percutaneous thermal ablation: when do we fail? A systematic review and guidelines for future reporting (Provisional abstract)      
Osteoinductive bone graft substitutes for lumbar fusion: a systematic review (Structured abstract)      
Osteomyelitis: antigranulocyte scintigraphy with 99mTc radiolabeled monoclonal antibodies for diagnosis. Meta-analysis (Structured abstract)      
Osteonecrosis of the jaw and use of bisphosphonates in adjuvant breast cancer treatment: a meta-analysis (Structured abstract)      
Osteonecrosis of the jaw associated with bisphosphonate therapy in primary osteoporosis: review of the literature (Provisional abstract)      
Osteonecrosis of the knee ? which joint preservation procedures work? (Provisional abstract)      
Osteopathic intervention in chronic non-specific low back pain: a systematic review (Provisional abstract)      
Osteopathic manipulative treatment for low back pain: a systematic review and meta-analysis of randomized controlled trials (Provisional abstract)      
Osteopathic manipulative treatment for nonspecific low back pain: a systematic review and meta-analysis (Provisional abstract)      New 
Osteopathic manipulative treatment for pediatric conditions: a systematic review (Provisional abstract)      
Osteoporose: der Sicht der Ernahrungsberatung. Ausgewogene Ernahrung und gesunde Lebensweise sind die beste Prophylaxe [Osteoporosis: the view of nutritional advice. A balanced diet and a healthy way of life are the best prophylaxis] (Provisional abstract)      
Osteoporosis in postmenopausal women: diagnosis and monitoring (Structured abstract)      
The Osteoporosis Self-Assessment Tool versus alternative tests for selecting postmenopausal women for bone mineral density assessment: a comparative systematic review of accuracy (Structured abstract)      
Osteotome-mediated sinus floor elevation: a systematic review and meta-analysis (Provisional abstract)      
Ostrogenbehandling for klimakterielt besvaer: er det trygt etter brystkreft? (Provisional abstract)      
Other complementary and alternative medicine modalities: acupuncture, magnets, reflexology, and homeopathy (Provisional abstract)      
The other half of the whole: teaching patients to communicate with physicians (Structured abstract)      
Otitis media with effusion and s-carboxymethylcysteine and/or its lysine salt: a critical overview (Structured abstract)      
Oto-acoustic emission audiometry (Structured abstract)      
Otoacoustic emissions in newborn hearing screening: a systematic review of the effects of different protocols on test outcomes (Provisional abstract)      
Ottawa Panel evidence-based clinical practice guidelines for aerobic fitness exercises in the management of fibromyalgia: part 1 (Provisional abstract)      
Ottawa panel evidence-based clinical practice guidelines for aerobic walking programs in the management of osteoarthritis (Structured abstract)      
Ottawa Panel evidence-based clinical practice guidelines for electrotherapy and thermotherapy interventions in the management of rheumatoid arthritis in adults (Provisional abstract)      
Ottawa panel evidence-based clinical practice guidelines for patient education programmes in the management of osteoarthritis (Provisional abstract)      
Ottawa Panel evidence-based clinical practice guidelines for post-stroke rehabilitation (Provisional abstract)      
Ottawa Panel evidence-based clinical practice guidelines for strengthening exercises in the management of fibromyalgia: part 2 (Provisional abstract)      
Ottawa Panel evidence-based clinical practice guidelines for therapeutic exercises in the management of rheumatoid arthritis in adults (Provisional abstract)      
Ottawa Panel evidence-based clinical practice guidelines on therapeutic massage for low back pain (Provisional abstract)      
Ottawa panel evidence-based clinical practice guidelines on therapeutic massage for neck pain (Provisional abstract)      
Out-patient determination of glycosylated haemoglobin in the monitoring and control of diabetes mellitus: systematic review of the literature (Provisional abstract)      
Outcome after conservative and operative treatment of children with idiopathic toe walking: a systematic review of literature (Structured abstract)      
Outcome after endografting in small and large abdominal aortic aneurysms: a metanalysis (Structured abstract)      
Outcome after endovascular stent graft repair of aortoenteric fistula: a systematic review (Provisional abstract)      
Outcome after endovascular stent graft treatment for mycotic aortic aneurysm: a systematic review (Provisional abstract)      
Outcome after open repair of ruptured abdominal aortic aneurysm in patients >80 years old: a systematic review and meta-analysis (Provisional abstract)      
Outcome after operative fusion of the tarsal joints: a systematic review (Provisional abstract)      
Outcome after preservation of infected abdominal aortic endografts (Provisional abstract)      
Outcome after reconstruction of the proximal humerus for tumor resection: a systematic review (Provisional abstract)      
Outcome after surgical repair of proximal hamstring avulsions: a systematic review (Provisional abstract)      New 
Outcome after treatment of coronary in-stent restenosis: results from a systematic review using meta-analysis techniques (Structured abstract)      
Outcome and complications after implantable cardioverter defibrillator therapy in hypertrophic cardiomyopathy: systematic review and meta-analysis (Provisional abstract)      
Outcome, attrition, and family-couples treatment for drug abuse: a meta-analysis and review of the controlled, comparative studies (Structured abstract)      
Outcome comparison of atlantoaxial fusion with transarticular screws and screw-rod constructs: meta-analysis and review of literature (Provisional abstract)      
Outcome effectiveness of community health workers: an integrative literature review (Structured abstract)      
Outcome following autogenous soft tissue interpositional arthroplasty for end-stage hallux rigidus: a systematic review (Provisional abstract)      
Outcome following nerve repair of high isolated clean sharp injuries of the ulnar nerve (Provisional abstract)      
Outcome of advanced NSCLC patients harboring sensitizing EGFR mutations randomized to EGFR tyrosine kinase inhibitors or chemotherapy as first-line treatment: a meta-analysis (Provisional abstract)      
Outcome of arthroscopic debridement and microfracture as the primary treatment for osteochondral lesions of the talar dome (Provisional abstract)      
Outcome of axillary staging in early breast cancer: a meta-analysis (Structured abstract)      
Outcome of cervicocranial artery dissection with different treatments: a systematic review and meta-analysis (Provisional abstract)      
The outcome of control groups in clinical trials of conservative treatments for chronic mechanical neck pain: a systematic review (Provisional abstract)      
The outcome of elbow ulnar collateral ligament reconstruction in overhead athletes: a systematic review (Structured abstract)      
Outcome of elderly patients undergoing intracranial meningioma resection ? a systematic review and meta-analysis (Provisional abstract)      
Outcome of endodontic surgery: a meta-analysis of the literature. Part 2: Comparison of endodontic microsurgical techniques with and without the use of higher magnification (Provisional abstract)      
Outcome of endoscopic treatment for peptic ulcer bleeding: is a second look necessary? A meta-analysis (Structured abstract)      
Outcome of endovascular treatment of acute type B aortic dissection (Structured abstract)      
Outcome of gemcitabine plus molecular targeted agent for treatment of pancreatic cancer: a meta-analysis of prospective phase III studies (Provisional abstract)      New 
Outcome of hemiarthroplasty and total hip replacement for active elderly patients with displaced femoral neck fractures: a meta-analysis of 8 randomized clinical trials (Provisional abstract)      
The outcome of intra-aortic balloon pump support in acute myocardial infarction complicated by cardiogenic shock according to the type of revascularization: a comprehensive meta-analysis (Provisional abstract)      
Outcome of kidney transplantation between controlled cardiac death and brain death donors: a meta-analysis (Provisional abstract)      New 
The outcome of laparoscopic cholecystectomy by ultrasonic dissection (Provisional abstract)      
Outcome of laparoscopic colorectal surgery in obese and nonobese patients: a meta-analysis (Provisional abstract)      
Outcome of microdissection TESE compared with conventional TESE in non-obstructive azoospermia: a systematic review (Provisional abstract)      
Outcome of motor training programmes on arm and hand functioning in patients with cervical spinal cord injury according to different levels of the ICF: a systematic review (Structured abstract)      
Outcome of open versus endovascular abdominal aortic aneurysm repair in obese patients: a systemic review and meta-analysis (Provisional abstract)      
Outcome of open versus endovascular revascularization for chronic mesenteric ischemia: review of comparative studies (Structured abstract)      
Outcome of operative treatment of metastatic fractures of the humerus: a systematic review of twenty three clinical studies (Provisional abstract)      New 
Outcome of patients undergoing salvage surgery for recurrent nasopharyngeal carcinoma: meta-analysis (Provisional abstract)      New 
Outcome of pharmacological treatments of pathological gambling: a review and meta-analysis (Structured abstract)      
Outcome of primary root canal treatment: systematic review of the literature. Part 1: effects of study characteristics on probability of success (Structured abstract)      
Outcome of prosthesis exchange for infected knee arthroplasty: the effect of treatment approach (Structured abstract)      
The outcome of psychodynamic psychotherapies with individuals diagnosed with personality disorders: a systematic review (Provisional abstract)      
Outcome of psychological treatments of pathological gambling: a review and meta-analysis (Provisional abstract)      
Outcome of revision anterior cruciate ligament reconstruction: a systematic review (Provisional abstract)      
Outcome of root canal obturation by warm gutta-percha versus cold lateral condensation: a meta-analysis (Structured abstract)      
Outcome of single-bundle versus double-bundle reconstruction of the anterior cruciate ligament: a meta-analysis (Provisional abstract)      
Outcome of surgical endodontic treatment performed by a modern technique: a meta-analysis of literature (Structured abstract)      
Outcome of surgical fundoplication for extraesophageal (atypical) manifestations of gastroesophageal reflux disease in adults: a systematic review (Structured abstract)      
Outcome predictors for conservative patellofemoral pain management: a systematic review and meta-analysis (Provisional abstract)      
Outcome trials of COX-2 selective inhibitors: global safety evaluation does not promise benefits (Provisional abstract)      
Outcomes after abdominal wall reconstruction using acellular dermal matrix: a systematic review (Provisional abstract)      
Outcomes after caregiver-provided speech and language or other allied health therapy: a systematic review (Provisional abstract)      
Outcomes after cheilectomy with phalangeal dorsiflexory osteotomy for hallux rigidus: a systematic review (Structured abstract)      
Outcomes after complete versus incomplete revascularization of patients with multivessel coronary artery disease: A meta-analysis of 89,883 patients enrolled in randomized clinical trials and observational studies (Provisional abstract)      
Outcomes after coronary computed tomography angiography in the emergency department: a systematic review and meta-analysis of randomized, controlled trials (Provisional abstract)      
Outcomes after displaced fractures of the femoral neck: a meta-analysis of one hundred and six published reports (Structured abstract)      
Outcomes after injury to the thumb ulnar collateral ligament - a systematic review (Provisional abstract)      
Outcomes after laminoplasty compared with laminectomy and fusion in patients with cervical myelopathy: a systematic review (Provisional abstract)      
Outcomes after Yttrium-ibritumomab tiuxetan-BEAM in diffuse large B-cell lymphoma: a meta-analysis (Provisional abstract)      
Outcomes and complications of operative versus non-operative treatment of acute Achilles tendon rupture: a meta-analysis (Provisional abstract)      
Outcomes and risks of operative treatment of rupture of the anterior cruciate ligament in children and adolescents (Provisional abstract)      
Outcomes and safety of endoscopic tarsal tunnel decompression: a systematic review (Provisional abstract)      
Outcomes associated with drug-eluting and bare-metal stents: a collaborative network meta-analysis (Structured abstract)      
Outcomes associated with opioid use in the treatment of chronic noncancer pain in older adults: a systematic review and meta-analysis (Structured abstract)      
Outcomes associated with the use of microprocessor-controlled prosthetic knees among individuals with unilateral transfemoral limb loss: a systematic review (Provisional abstract)      
Outcomes associated with virtual reality in psychological interventions: where are we now? (Provisional abstract)      New 
Outcomes following ACL reconstruction utilizing the quadriceps tendon autograft: a critically appraised topic (Provisional abstract)      New 
Outcomes following laparoscopic versus open repair of incisional hernia (Structured abstract)      
Outcomes following percutaneous coronary intervention in patients with acute coronary syndrome and chronic kidney disease: a meta-analysis (Provisional abstract)      
Outcomes following trochleoplasty for patellar instability with trochlear dysplasia: a systematic review (Structured abstract)      
Outcomes for children and adolescents after residential treatment: a review of research from 1993 to 2003 (Structured abstract)      
Outcomes for efavirenz versus nevirapine-containing regimens for treatment of hiv-1 infection: a systematic review and meta-analysis (Provisional abstract)      
Outcomes for primary anterior cruciate reconstruction with the quadriceps autograft: a systematic review (Provisional abstract)      
Outcomes for young children with disabilities associated with the use of partial, body-weight-supported, treadmill training: an evidence-based review (Provisional abstract)      
Outcomes from the use of the implantable cardiac defibrillator: a critical appraisal of the literature (Structured abstract)      
Outcomes in adult scoliosis patients who undergo spinal fusion stopping at L5 compared with extension to the sacrum (Provisional abstract)      
Outcomes in different residential settings for people with intellectual disability: a systematic review (Structured abstract)      
Outcomes in distal hypospadias: a systematic review of the Mathieu and tubularized incised plate repairs (Provisional abstract)      
Outcomes in patients with chronic kidney disease referred late to nephrologists: a meta-analysis (Provisional abstract)      
Outcomes in patients with non-ST-elevation acute coronary syndrome randomly assigned to invasive versus conservative treatment strategies: a meta-analysis (Provisional abstract)      New 
Outcomes in vascular surgical patients with isolated postoperative troponin leak: a meta-analysis (Provisional abstract)      
Outcomes of adrenalectomy for isolated synchronous versus metachronous adrenal metastases in non-small-cell lung cancer: a systematic review and pooled analysis (Structured abstract)      
Outcomes of anterior cruciate ligament reconstruction using single-bundle versus double-bundle technique: meta-analysis of 19 randomized controlled trials (Provisional abstract)      
Outcomes of arthroscopic and open surgical repair of isolated subscapularis tendon tears (Provisional abstract)      
Outcomes of arthroscopic anterior shoulder instability in the beach chair versus lateral decubitus position: a systematic review and meta-regression analysis (Provisional abstract)      
Outcomes of arthroscopic versus open rotator cuff repair: a systematic review of the literature (Provisional abstract)      
Outcomes of cardiac resynchronization therapy in patients with versus those without atrial fibrillation: a systematic review and meta-analysis (Provisional abstract)      
Outcomes of cataract surgery in patients with uveitis: a systematic review and meta-analysis (Provisional abstract)      
Outcomes of Chiari I-associated scoliosis after intervention: a meta-analysis of the pediatric literature (Provisional abstract)      
Outcomes of children and adolescents with well-differentiated thyroid carcinoma and pulmonary metastases following 131I treatment: a systematic review (Structured abstract)      
Outcomes of classroom-based team training interventions for multiprofessional hospital staff. A systematic review (Provisional abstract)      
Outcomes of clofazimine for the treatment of drug-resistant tuberculosis: a systematic review and meta-analysis (Provisional abstract)      
Outcomes of community health worker interventions (Structured abstract)      
Outcomes of different laser types in laser-assisted stapedotomy: a systematic review (Provisional abstract)      
Outcomes of early versus late nephrology referral in chronic kidney disease: a systematic review (Provisional abstract)      
Outcomes of educational interventions in type 2 diabetes: WEKA data-mining analysis (Provisional abstract)      
Outcomes of elderly survivors of intensive care: a review of the literature (Structured abstract)      
Outcomes of free-standing, midwife-led birth centers: a structured review (Provisional abstract)      
Outcomes of fusion for lateral atlantoaxial osteoarthritis: meta-analysis and review of literature (Provisional abstract)      
Outcomes of hepatectomy for noncirrhotic hepatocellular carcinoma: a systematic review (Provisional abstract)      New 
Outcomes of hepatitis C screening programs targeted at risk groups hidden in the general population: a systematic review (Provisional abstract)      
Outcomes of inpatient mobilization: a literature review (Provisional abstract)      
The outcomes of interventional treatment for Budd-Chiari syndrome: systematic review and meta-analysis (Provisional abstract)      New 
Outcomes of intravesical botulinum toxin for idiopathic overactive bladder symptoms: a systematic review of the literature (Provisional abstract)      
Outcomes of involuntary hospital admission: a review (Structured abstract)      
Outcomes of isolated limb perfusion in the treatment of extremity soft tissue sarcoma: a systematic review (Provisional abstract)      
Outcomes of liver transplantation for nonalcoholic steatohepatitis: a systematic review and meta-analysis (Provisional abstract)      
The outcomes of manipulation or mobilization therapy compared with physical therapy or exercise for neck pain: a systematic review (Provisional abstract)      
Outcomes of mechanical endovascular therapy for acute ischemic stroke: a clinical registry study and systematic review (Structured abstract)      
Outcomes of medial patellofemoral ligament reconstruction for patellar instability: a systematic review (Structured abstract)      
Outcomes of minimally invasive simple prostatectomy for benign prostatic hyperplasia: a systematic review and meta-analysis (Provisional abstract)      
Outcomes of mitral valve repair compared with replacement in patients undergoing concomitant aortic valve surgery: a meta-analysis of observational studies (Provisional abstract)      New 
Outcomes of MTA as root-end filling in endodontic surgery: a systematic review (Provisional abstract)      
Outcomes of new quality standards of follitropin alfa on ovarian stimulation: meta-analysis of previous studies (Structured abstract)      
Outcomes of nonsurgical retreatment and endodontic surgery: a systematic review (Structured abstract)      
Outcomes of online support and resources for cancer survivors: a systematic literature review (Provisional abstract)      
Outcomes of operative and nonoperative treatment of multiligament knee injuries: an evidence-based review (Provisional abstract)      
Outcomes of osteochondral allograft transplantation in the knee (Provisional abstract)      
The outcomes of ovarian cancer treatment are better when provided by gynecologic oncologists and in specialized hospitals: a systematic review (Structured abstract)      
Outcomes of ovarian transposition in gynaecological cancers: a systematic review and meta-analysis (Provisional abstract)      
The outcomes of palliative care day services: a systematic review (Provisional abstract)      
Outcomes of patients receiving clopidogrel prior to cardiac surgery (Structured abstract)      
Outcomes of patients with chronic heart failure and iron deficiency treated with intravenous iron: a meta-analysis (Provisional abstract)      
Outcomes of perioperative beta-blockade in patients undergoing noncardiac surgery: a meta-analysis (Structured abstract)      
Outcomes of pharmaceutical care in Brazil: a literature review (Provisional abstract)      New 
Outcomes of pharmacogenetics-guided dosing of warfarin: a systematic review and meta-analysis (Provisional abstract)      New 
Outcomes of planned home birth: an integrative review (Structured abstract)      
Outcomes of posterior cruciate ligament treatment: a review of the evidence (Provisional abstract)      
Outcomes of preoperative bridging therapy for patients undergoing surgery after coronary stent implantation: a weighted meta-analysis of 280 patients from 8 studies (Provisional abstract)      
Outcomes of progressive resistance strength training following stroke: a systematic review (Provisional abstract)      
Outcomes of proximal versus distal splenic artery embolization after trauma: a systematic review and meta-analysis (Provisional abstract)      
Outcomes of religious and spiritual adaptations to psychotherapy: a meta-analytic review (Structured abstract)      
Outcomes of robotic sacrocolpopexy: a systematic review and meta-analysis (Provisional abstract)      New 
Outcomes of root canal treatment and restoration, implant-supported single crowns, fixed partial dentures, and extraction without replacement: a systematic review (Structured abstract)      
Outcomes of single-row and double-row arthroscopic rotator cuff repair: a systematic review (Structured abstract)      
Outcomes of single-row versus double-row arthroscopic rotator cuff repair: a systematic review and meta-analysis of current evidence (Provisional abstract)      
Outcomes of sipuleucel-T therapy (Provisional abstract)      
Outcomes of staff training in positive behaviour support: a systematic review (Provisional abstract)      
Outcomes of staple fixation of mesh versus nonfixation in laparoscopic total extraperitoneal inguinal repair: a meta-analysis of randomized controlled trials (Structured abstract)      
Outcomes of stenting after uncomplicated ureteroscopy: systematic review and meta-analysis (Structured abstract)      
Outcomes of surgical endodontic treatment performed by a modern technique: an updated meta-analysis of the literature (Provisional abstract)      
Outcomes of surgical treatment for nonfunctioning pituitary adenomas: a systematic review and meta-analysis (Provisional abstract)      
Outcomes of surgical versus balloon angioplasty treatment for native coarctation of the aorta: a meta-analysis (Provisional abstract)      
Outcomes of the Bobath concept on upper limb recovery following stroke (Provisional abstract)      
Outcomes of total and unicompartmental knee arthroplasty for secondary and spontaneous osteonecrosis of the knee (Structured abstract)      
Outcomes of ureteroscopy for stone disease in pregnancy: results from a systematic review of the literature (Provisional abstract)      
Outcomes with coronary artery bypass graft surgery versus percutaneous coronary intervention for patients with diabetes mellitus: can newer generation drug-eluting stents bridge the gap? (Provisional abstract)      
Outcomes with individual versus group physical therapy for treating urinary incontinence and low back pain: a systematic review and meta-analysis of randomized controlled trials (Provisional abstract)      
Outcomes with various drug eluting or bare metal stents in patients with diabetes mellitus: mixed treatment comparison analysis of 22 844 patient years of follow-up from randomised trials (Structured abstract)      
Outcomes with various drug-eluting or bare metal stents in patients with ST-segment-elevation myocardial infarction: a mixed treatment comparison analysis of trial level data from 34 068 patient-years of follow-up from randomized trials (Provisional abstract)      
Outdoor workers' sun-related knowledge, attitudes and protective behaviours: a systematic review of cross-sectional and interventional studies (Provisional abstract)      
Outpatient and oral antibiotic management of low-risk febrile neutropenia are effective in children: a systematic review of prospective trials (Structured abstract)      
Outpatient case management for adults with medical illness and complex care needs (Structured abstract)      
Outpatient hysteroscopy and subsequent IVF cycle outcome: a systematic review and meta-analysis (Structured abstract)      
Outpatient management of cancer patients with febrile neutropenia: a systematic review and meta-analysis (Structured abstract)      
Outpatient management of febrile neutropenia: time to revise the present treatment strategy (Structured abstract)      
Outpatient stem cell transplant: effectiveness and implications (Provisional abstract)      
Outpatient surgery in the cervical spine: is it safe? (Provisional abstract)      New 
Outpatient therapy with low molecular weight heparin for the treatment of venous thromboembolism: a review of efficacy, safety, and costs (Structured abstract)      
Outpatient treatment and early discharge of symptomatic pulmonary embolism: a systematic review (Structured abstract)      
Outpatient treatment of symptomatic pulmonary embolism: a systematic review and meta-analysis (Provisional abstract)      
Outpatient versus inpatient treatment in patients with pulmonary embolism: a meta-analysis (Provisional abstract)      
Outreach and integration programs to promote family planning in the extended postpartum period (Provisional abstract)      
Outreach-based HIV prevention for injecting drug users: a review of published outcome data (Structured abstract)      
Outreach for chlamydia and gonorrhoea screening: a systematic review of strategies and outcomes (Provisional abstract)      
Ovarian ablation in early breast cancer: overview of the randomised trials (Structured abstract)      
Ovarian biopsy has no role as a routine diagnostic test of ovarian reserve: a systematic review (Provisional abstract)      
Ovarian cancer and oral contraceptives: collaborative reanalysis of data from 45 epidemiological studies including 23257 women with ovarian cancer and 87303 controls (Structured abstract)      
Ovarian cancer patients and hormone replacement therapy: a systematic review (Provisional abstract)      
Ovarian cancer (Structured abstract)      
Ovarian preservation by GnRH agonists during chemotherapy: a meta-analysis (Structured abstract)      
Ovarian responsiveness in women receiving fertility treatment after methotrexate for ectopic pregnancy: a systematic review and meta-analysis (Provisional abstract)      
Overactive bladder drugs and constipation: a meta-analysis of randomized, placebo-controlled trials (Structured abstract)      
Overall and KRAS-specific results of combined cetuximab treatment and chemotherapy for metastatic colorectal cancer: a meta-analysis (Structured abstract)      
Overall survival after partial versus radical nephrectomy for a small renal mass: systematic review of observational studies (Provisional abstract)      
Overall survival benefit for weekly vs three-weekly taxanes regimens in advanced breast cancer: a meta-analysis (Structured abstract)      
Overall survival benefits for combining targeted therapy as second-line treatment for advanced non-small-cell-lung cancer: a meta-analysis of published data (Provisional abstract)      
Overall survival benefits for irinotecan-containing regimens as first-line treatment for advanced gastric cancer: an updated meta-analysis of ten randomized controlled trials (Provisional abstract)      
Overall survival of patients with advanced pancreatic cancer improved with an increase in second-line chemotherapy after gemcitabine-based therapy (Provisional abstract)      
Overall treatment success after treatment of primary superficial basal cell carcinoma: a systematic review and meta-analysis of randomized and nonrandomized trials (Structured abstract)      
Overcoming the barriers to the diagnosis and management of chronic fatigue syndrome/ME in primary care: a meta synthesis of qualitative studies (Provisional abstract)      
Overdiagnosis in mammographic screening for breast cancer in Europe: a literature review (Provisional abstract)      
Overdiagnosis in publicly organised mammography screening programmes: systematic review of incidence trends (Structured abstract)      
Overexpression of epidermal growth factor receptor and its clinicopathological significance: a meta analysis with esophageal squamous cell carcinoma (Provisional abstract)      
Overground gait training for individuals with chronic stroke: a Cochrane systematic review (Structured abstract)      
Overground physical therapy gait training for chronic stroke patients with mobility deficits (Structured abstract)      
Overview and analysis of treat-to-target trials in rheumatoid arthritis reporting on remission (Structured abstract)      
Overview and meta-analysis of randomised trials of amiodarone in chronic heart failure (Structured abstract)      
An overview of art therapy interventions for cancer patients and the results of research (Provisional abstract)      
An overview of different red blood cell transfusion strategies for preterm infants (Provisional abstract)      
An overview of evidence-based management of hepatocellular carcinoma: a meta-analysis (Provisional abstract)      
An overview of family interventions and relapse on schizophrenia: meta-analysis of research findings (Structured abstract)      
An overview of levodopa in the management of restless legs syndrome in a dialysis population: pharmacokinetics, clinical trials, and complications of therapy (Structured abstract)      
An overview of mutual support groups for family caregivers of people with mental health problems: evidence on process and outcomes (Structured abstract)      
An overview of randomised controlled trials of adjuvant chemotherapy in head and neck cancer (Structured abstract)      
An overview of randomised studies comparing 5-HT3 receptor antagonists to conventional anti-emetics in the prophylaxis of acute chemotherapy-induced vomiting (Structured abstract)      
Overview of randomized clinical trials of oral branched-chain amino acid treatment in chronic hepatic encephalopathy (Structured abstract)      
Overview of randomized perioperative polychemotherapy trials in women with early-stage breast cancer (Structured abstract)      
Overview of randomized trials of angiotensin-converting enzyme inhibitors on mortality and morbidity in patients with heart failure (Structured abstract)      
Overview of randomized trials of intravenous heparin in patients with acute myocardial infarction treated with thrombolytic therapy (Structured abstract)      
An overview of reflexology (Structured abstract)      
An overview of research on increasing indices of happiness of people with severe/profound intellectual and multiple disabilities (Structured abstract)      
An overview of the effect of computer-assisted management of anticoagulant therapy on the quality of anticoagulation (Structured abstract)      
Overview of the effectiveness of triple combination therapy in antiretroviral-naive HIV-1 infected adults (Structured abstract)      
An overview of the evidences of herbals for smoking cessation (Provisional abstract)      
Overview of the relevant literature on the possible role of acupuncture in treating male sexual dysfunction (Provisional abstract)      New 
An overview of the use and implementation of checklists in surgical specialities ? a systematic review (Provisional abstract)      New 
Overweight in polycystic ovary syndrome. An update on evidence based advice on diet, exercise and metformin use for weight loss (Provisional abstract)      
Ovulation induction and risk of ovarian cancer: a systematic review (Provisional abstract)      
Ovulation induction drug therapy for anovulatory infertility associated with polycystic ovary syndrome (Provisional abstract)      
Ovulation induction in the new millennium: recombinant follicle-stimulating hormone versus human menopausal gonadotropin (Provisional abstract)      
Ovulation induction, infertility, and ovarian cancer risk (Structured abstract)      
Oxaliplatin: a review of its use in combination therapy for advanced metastatic colorectal cancer (Provisional abstract)      
Oxaliplatin: a review of its use in the management of metastatic colorectal cancer (Structured abstract)      
Oxaliplatin-based chemotherapy: a new option in advanced hepatocellular carcinoma. A systematic review and pooled analysis (Provisional abstract)      
Oxaliplatin for the treatment of cisplatin-resistant cancer: a systematic review (Provisional abstract)      
Oxaliplatin plus vinorelbine in the treatment of advanced non-small cell lung cancer: a systematic review (Provisional abstract)      
Oxandrolone use in adult burn patients. Systematic review and meta-analysis (Provisional abstract)      New 
Oxcarbazepine: a review of its use in children with epilepsy (Provisional abstract)      
Oxcarbazepine for refractory epilepsy: systematic review of the literature (Structured abstract)      
Oxidative stress in blood in Alzheimer's disease and mild cognitive impairment: a meta-analysis (Provisional abstract)      
Oxidative stress-related biomarkers in autism: systematic review and meta-analyses (Provisional abstract)      
Oxime therapy and outcomes in human organophosphate poisoning: an evaluation using meta-analytic techniques (Structured abstract)      
Oxygen consumption during functional electrical stimulation-assisted exercise in persons with spinal cord injury: implications for fitness and health (Provisional abstract)      
Oxygen extraction fraction and stroke risk in patients with carotid stenosis or occlusion: a systematic review and meta-analysis (Provisional abstract)      
Oxygen for reducing nausea and vomiting during emergency ambulance transportation: a systematic review of randomised controlled trials (Provisional abstract)      
Oxygen for relief of dyspnoea in mildly- or non-hypoxaemic patients with cancer: a systematic review and meta-analysis (Structured abstract)      
Oxygen for relief of dyspnoea in people with chronic obstructive pulmonary disease who would not qualify for home oxygen: a systematic review and meta-analysis (Provisional abstract)      New 
Oxygen saturation in the dental pulp of permanent teeth: a critical review (Provisional abstract)      
Oxytocin and autism: a systematic review of randomized controlled trials (Provisional abstract)      
Oxytocin antagonists for tocolysis in preterm labour: a systematic review (Provisional abstract)      
Ozagrel for acute ischemic stroke: a meta-analysis of data from randomized controlled trials (Provisional abstract)      
Ozone therapy as a treatment for low back pain secondary to herniated disc: a systematic review and meta-analysis of randomized controlled trials (Structured abstract)