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Cochrane Database of Systematic Reviews

Reminder systems to improve patient adherence to tuberculosis clinic appointments for diagnosis and treatment

Information

DOI:
https://doi.org/10.1002/14651858.CD006594.pub3Copy DOI
Database:
  1. Cochrane Database of Systematic Reviews
Version published:
  1. 18 November 2014see what's new
Type:
  1. Intervention
Stage:
  1. Review
Cochrane Editorial Group:
  1. Cochrane Infectious Diseases Group

Classified:
  1. Update pending

    Studies awaiting assessment

    The CIDG is currently examining a search conducted up to 18 Jul, 2018 for potentially relevant studies. These studies have not yet been incorporated into this Cochrane Review.

    Assessed: 15 April 2019

Copyright:
  1. Copyright © 2014 The Authors. Cochrane Database of Systematic Reviews published by John Wiley & Sons, Ltd. on behalf of The Cochrane Collaboration.
  2. This is an open access article under the terms of the Creative Commons Attribution‐Non‐Commercial Licence, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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Authors

  • Qin Liu

    Correspondence to: China Effective Health Care Network, School of Public Health & Management, Chongqing Medical University, Chongqing, China

    [email protected]

  • Katharine Abba

    International Health Group, Liverpool School of Tropical Medicine, Liverpool, UK

  • Marissa M Alejandria

    Department of Clinical Epidemiology and Section of Infectious Diseases, Department of Medicine, Philippine General Hospital, University of the Philippines, Manila, Philippines

  • David Sinclair

    Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK

  • Vincent M Balanag

    Lung Center of the Philippines, Quezon City, Philippines

  • Mary Ann D Lansang

    Department of Clinical Epidemiology and Section of Infectious Diseases, Department of Medicine, Philippine General Hospital, University of the Philippines, Manila, Philippines

Contributions of authors

This review was designed in collaboration with all six authors. KA and MADL screened the search results; KA retrieved the full papers which met the inclusion criteria. KA and QL assessed the eligibility of the retrieved papers, and MAL acted as third author for this stage. MA and VMB assessed the risk of bias of the included trials and extracted the data from papers; QL acted as a third author for this stage. QL wrote to trial authors for additional information, entered the data into Review Manager 5; QL and DS undertook the analyses and interpreted the data in consultation with the other review authors. QL drafted the review and the other review authors provided comments and helped to revise the review.

Sources of support

Internal sources

  • Chongqing Medical University, China.

External sources

  • Department for International Development (DFID), UK.

Declarations of interest

None known.

Acknowledgements

We thank Dr. Regina P. Berba for her valuable contributions to the previous version of this review. Also we are grateful to Paul Garner, Vittoria Lutje, Anne‐Marie Stephani, and Christianne Esparza for their valuable comments and kind support. This review is part of a project funded by UKaid from the UK Government for the benefit of developing countries.

Version history

Published

Title

Stage

Authors

Version

2014 Nov 18

Reminder systems to improve patient adherence to tuberculosis clinic appointments for diagnosis and treatment

Review

Qin Liu, Katharine Abba, Marissa M Alejandria, David Sinclair, Vincent M Balanag, Mary Ann D Lansang

https://doi.org/10.1002/14651858.CD006594.pub3

2008 Oct 08

Reminder systems and late patient tracers in the diagnosis and management of tuberculosis

Review

Qin Liu, Katharine Abba, Marissa M Alejandria, Vincent M Balanag, Regina P Berba, Mary Ann D Lansang

https://doi.org/10.1002/14651858.CD006594.pub2

2007 Jul 18

Reminder systems and late patient tracers in the diagnosis and management of tuberculosis

Protocol

Qin Liu, Katharine Abba, Marissa M Alejandria, Vincent M Balanag, Regina P Berba, Mary Ann D Lansang

https://doi.org/10.1002/14651858.CD006594

Differences between protocol and review

We amended the original protocol title 'Reminder systems and late patient tracers in the diagnosis and management of tuberculosis'. After publication of the original review, we found that the term 'late patient tracers' was unfamiliar to many readers, hence we used 'pre‐appointment reminders' instead of 'reminder systems' to mean any action to remind patients before they take their medication or attend their appointment; and 'default reminders' instead of 'late patient tracers' to mean similar interventions undertaken when patients fail to keep an appointment. Consequently, we changed the title to 'Reminder systems to improve patient adherence to TB clinic appointments for diagnosis and treatment' and also amended the terminologies in the review.

Keywords

MeSH

PICOs

Population
Intervention
Comparison
Outcome

The PICO model is widely used and taught in evidence-based health care as a strategy for formulating questions and search strategies and for characterizing clinical studies or meta-analyses. PICO stands for four different potential components of a clinical question: Patient, Population or Problem; Intervention; Comparison; Outcome.

See more on using PICO in the Cochrane Handbook.

Study flow diagram.
Figures and Tables -
Figure 1

Study flow diagram.

Risk of bias graph: review authors' judgements about each risk of bias item presented as percentages across all included trials.
Figures and Tables -
Figure 2

Risk of bias graph: review authors' judgements about each risk of bias item presented as percentages across all included trials.

Risk of bias summary: review authors' judgements about each risk of bias item for each included trial.
Figures and Tables -
Figure 3

Risk of bias summary: review authors' judgements about each risk of bias item for each included trial.

Comparison 1 TB treatment: reminder versus none, Outcome 1 Attendance at single clinic appointment.
Figures and Tables -
Analysis 1.1

Comparison 1 TB treatment: reminder versus none, Outcome 1 Attendance at single clinic appointment.

Comparison 1 TB treatment: reminder versus none, Outcome 2 TB cure or treatment completion.
Figures and Tables -
Analysis 1.2

Comparison 1 TB treatment: reminder versus none, Outcome 2 TB cure or treatment completion.

Comparison 2 TB treatment: comparison of different reminders, Outcome 1 Attendance at single clinic appointment.
Figures and Tables -
Analysis 2.1

Comparison 2 TB treatment: comparison of different reminders, Outcome 1 Attendance at single clinic appointment.

Comparison 2 TB treatment: comparison of different reminders, Outcome 2 TB cure or treatment completion.
Figures and Tables -
Analysis 2.2

Comparison 2 TB treatment: comparison of different reminders, Outcome 2 TB cure or treatment completion.

Comparison 3 TB prophylaxis: reminder versus none, Outcome 1 Attendance at single clinic appointment.
Figures and Tables -
Analysis 3.1

Comparison 3 TB prophylaxis: reminder versus none, Outcome 1 Attendance at single clinic appointment.

Comparison 3 TB prophylaxis: reminder versus none, Outcome 2 Attendance at final clinic appointment.
Figures and Tables -
Analysis 3.2

Comparison 3 TB prophylaxis: reminder versus none, Outcome 2 Attendance at final clinic appointment.

Comparison 4 Skin test reading: reminder versus none, Outcome 1 Attendance at single clinic appointment.
Figures and Tables -
Analysis 4.1

Comparison 4 Skin test reading: reminder versus none, Outcome 1 Attendance at single clinic appointment.

Comparison 5 Skin test reading: comparison of different reminders, Outcome 1 Attendance at single clinic appointment.
Figures and Tables -
Analysis 5.1

Comparison 5 Skin test reading: comparison of different reminders, Outcome 1 Attendance at single clinic appointment.

Summary of findings for the main comparison. Summary of findings table 1

TB treatment: pre‐appointment reminder versus no reminder

Patient or population: People on TB treatment
Settings: Outpatient clinic
Intervention: Pre‐appointment reminder
Comparison: No reminder

Outcomes

Illustrative comparative risks* (95% CI)

Relative effect
(95% CI)

No of participants
(trials)

Quality of the evidence
(GRADE)

Assumed risk

Corresponding risk

No reminder

Pre‐appointment reminder

Attendance at single clinic appointment

50 per 100

66 per 100

(55 to 80)

RR 1.32

(1.10 to 1.59)

615
(1 trial)

⊕⊕⊝⊝

low1,2

Completion of TB treatment

88 per 100

100 per 100

(90 to 100)

RR 1.14

(1.02 to 1.27)

92
(1 trial)

⊕⊕⊝⊝

low3,4,5

The basis for the assumed risk is the median control group risk across studies. The corresponding risk (and its 95% CI) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI).
CI: Confidence interval; RR: Risk ratio.

GRADE Working Group grades of evidence
High quality: Further research is very unlikely to change our confidence in the estimate of effect.
Moderate quality: Further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate.
Low quality: Further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate.
Very low quality: We are very uncertain about the estimate.

1Downgraded by 1 for serious risk of bias: This trial was quasi‐randomized and is at high risk of selection bias.
2Downgraded by 1 for serious indirectness: Clinic attendance in this single trial from the USA is very low. It is unclear whether DOTS was implemented at the trial site, and the findings may not be easily generalizable elsewhere
3Downgraded by 1 for serious risk of bias: No details of randomization are provided and the risk of selection bias.
4Downgraded by 1 for serious imprecision: This trial is very underpowered to detect this effect.
5No serious indirectness: This is a single trial of pre‐appointment phone call reminders in adults from Thailand where DOTS was being implemented. Although its findings may not be easily generalized to all settings, it is likely to be similar to TB‐endemic settings in developing countries.

Figures and Tables -
Summary of findings for the main comparison. Summary of findings table 1
Summary of findings 2. Summary of findings table 2

TB treatment: defaulter reminder versus no reminder

Patient or population: People on TB treatment
Settings: Outpatient clinic
Intervention: Default reminder
Comparison: No reminder

Outcomes

Illustrative comparative risks* (95% CI)

Relative effect
(95% CI)

No of participants
(trials)

Quality of the evidence
(GRADE)

Assumed risk

Corresponding risk

No reminder

Defaulter reminder

Attendance at single clinic appointment

10 per 100

52 per 100

(17 to 100)

RR 5.04
(1.61 to 15.78)

52

(1 trial)

⊕⊕⊝⊝
low1,2,3

Completion of TB treatment

78 per 100

91 per 100
(87 to 97)

RR 1.17
(1.11 to 1.24)

680
(2 trials)

⊕⊕⊕⊝
moderate4,5,6,7

The basis for the assumed risk is the median control group risk across studies. The corresponding risk (and its 95% CI) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI).
CI: Confidence interval; RR: Risk ratio.

GRADE Working Group grades of evidence
High quality: Further research is very unlikely to change our confidence in the estimate of effect.
Moderate quality: Further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate.
Low quality: Further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate.
Very low quality: We are very uncertain about the estimate.

1No serious risk of bias: This trial was at low risk of selection bias, but was unblinded.
2Downgraded by 1 for serious indirectness: This outcome was only reported from a single trial setting in India where DOTS was not implemented and attendance at clinic was very low. The result may not be easily generalizable elsewhere.
3Downgraded by 1 for serious imprecision: This trial was underpowered to confidently detect clinically important effects.
4No serious risk of bias: Both trials were at low risk of selection bias.
5No serious inconsistency: This finding was consistent across trials.
6Downgraded by 1 for serious indirectness: The two trials were conducted in Iraq and India and DOTS was only implemented in the Iraq trial. One trial used home visits and one used reminder letters. The findings may not be easily generalized to all settings, and interventions may need adapting to the local context.
7No serious imprecision: The trials are adequately powered to detect this effect.

Figures and Tables -
Summary of findings 2. Summary of findings table 2
Summary of findings 3. Summary of findings table 3

TB skin testing: pre‐appointment reminder versus no reminder

Patient or population: People at risk of TB
Settings: Outpatient clinic
Intervention: Pre‐appointment reminder
Comparison: No reminder

Outcomes

Illustrative comparative risks* (95% CI)

Relative effect
(95% CI)

No of participants
(trials)

Quality of the evidence
(GRADE)

Assumed risk

Corresponding risk

No reminder

Pre‐appointment reminder

Attendance at clinic

60 per 100

63 per 100
(55 to 72)

RR 1.06
(0.92 to 1.21)

1189
(3 trials)

⊕⊕⊝⊝
low1,2

The basis for the assumed risk is the median control group risk across studies. The corresponding risk (and its 95% CI) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI).
CI: Confidence interval; RR: Risk ratio.

GRADE Working Group grades of evidence
High quality: Further research is very unlikely to change our confidence in the estimate of effect.
Moderate quality: Further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate.
Low quality: Further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate.
Very low quality: We are very uncertain about the estimate.

1Downgraded by 1 for serious risk of bias: Two trials are quasi‐RCTs and at high risk of selection bias. The third provides few details of randomization and is at unclear risk.
2Downgraded by 1 for serious indirectness: All three trials were conducted in the USA between 1983 and 1997, and the results may not be easily generalized to elsewhere.

Figures and Tables -
Summary of findings 3. Summary of findings table 3
Table 1. Detailed search strategies

Search set

Cochrane SRa

CENTRAL

MEDLINEb

EMBASEb

LILACSb

SCI‐EXPANDED & SSCI

CINAHL

1

tuberculosis

tuberculosis

tuberculosis

tuberculosis

tuberculosis

tuberculosis

tuberculosis

2

adherence

PATIENT COMPLIANCE

TUBERCULOSIS/DRUG THERAPY/PREVENTION AND CONTROL

TUBERCULOSIS

adherence

adherence

adherence

3

compliance

PATIENT DROPOUTS

PATIENT COMPLIANCE

PATIENT‐COMPLIANCE

compliance

compliance

compliance

4

monitor*

REMINDER SYSTEMS

PATIENT DROPOUTS

medication adherence

Monitor$

monitor*

monitor*

5

reminder*

TREATMENT REFUSAL

COOPERATIVE BEHAVIOUR

REMINDER‐SYSTEM

Reminder$

reminder*

reminder*

6

phone or SMS* or text or messaging

DIRECTLY OBSERVED THERAPY

TREATMENT REFUSAL

TREATMENT‐REFUSAL

phone or SMS$ or text or messaging

non‐adherence

non‐adherence

7

2 or 3 or 4 or 5 or 6

medication adherence

medication adherence

DIRECTLY‐OBSERVED‐THERAPY

2 or 3 or 4 or 5 or 6

late patient tracer

late patient tracer

8

1 and 7

electronic monitoring

REMINDER SYSTEMS

electronic monitoring

1 and 7

phone or SMS* or text or messaging

phone or SMS* or text or messaging

9

nonadherence

electronic monitoring

nonadherence

2‐8/OR

2‐8/OR

10

non‐adherence

nonadherence

non‐adherence

1 AND 9

1 AND 9

11

late patient tracer

non‐adherence

late patient tracer

12

phone or SMS* or text or messaging

DIRECTLY OBSERVED THERAPY

phone or SMS* or text or messaging

13

2‐12

late patient tracer

1 or 2

14

1 AND 13

phone or SMS* or text or messaging

3‐12/OR

15

1 or 2

13 and 14

16

3‐14/OR

17

15 and 16

aCochrane Infectious Diseases Group Specialized Register and the Cochrane Effective Practice and Organisation of Care Group Specialized Register.
bSearch terms used in combination with the search strategy for retrieving trials developed by The Cochrane Collaboration (Lefebvre 2011). For controlled "before and after" studies, we used the terms: "before and after"; time series analysis; cohort analysis; controlled study. Upper case: MeSH or EMTREE heading; lower case: free text term.

Figures and Tables -
Table 1. Detailed search strategies
Table 2. Summary of populations and interventions

Trial ID

Country

Age group

TB status

TB intervention

Supervision of treatment

Type of reminder

Timing of reminder

Pre/post appointment

Control

Roberts 1983b

USA

Adults

At risk of TB

Test

N/A

Take home reminder card1

N/A

N/A

Verbal statement in clinic

Roberts 1983a

USA

Adults

At risk of TB

Test

N/A

Take home reminder card2

N/A

N/A

Verbal statement in clinic

N/A

Postcard

1 day

Pre‐appointment

Verbal statement in clinic

N/A

Phone call

1 day

Pre‐appointment

Verbal statement in clinic

Tanke 1994

USA

All

At risk of TB

Test

N/A

Phone call3

1 day

Pre‐appointment

No phone call

Cheng 1997

USA

Children

At risk of TB

Test

N/A

Phone call

1 day

Pre‐appointment

Take home reminder card

Salleras Sanmarti 1993

Spain

Children

Asymptomatic

Prophylaxis

Parents

A routine phone call every 3 months

N/A

N/A

One‐off advice to take treatment for 12 months

A routine nurse home visit every 3 months

N/A

N/A

One‐off advice to take treatment for 12 months

A routine doctor clinic appointment every 3 months

N/A

N/A

One‐off advice to take treatment for 12 months

Tanke 1994

USA

All

Asymptomatic

Prophylaxis

Unclear

Phone call3

1 day

Pre‐appointment

No phone call

Tanke 1994

USA

All

Symptomatic

Treatment

Unclear

Phone call3

1 day

Pre‐appointment

No phone call

Kunawararak 2011

Thailand

> 15 years

Symptomatic

Treatment

DOTS

Phone call

1 day

Pre‐appointment

DOTS alone

Mohan 2003

Iraq

Not stated

Symptomatic

Treatment

DOTS

Home visit

3 days

Post‐appointment

DOTS alone

Krishnaswami 1981

India

> 12 years

Symptomatic

Treatment

Self‐monthly pick‐up of meds

Home visit

4 days

Post‐appointment

Reminder letter

Paramasivan 1993

India

Adult

Symptomatic

Treatment

Self‐monthly pick‐up of meds

Reminder card

3 days

Post‐appointment

No reminder card

1Roberts 1983b also evaluated the effects of three types of participant commitment to return (no commitment, verbal, verbal plus written), and two types of verbal messaging on the importance of returning (enhanced versus standard).
2Roberts 1983aalso evaluated the effect of two types of verbal messaging on the importance of returning (expert versus non‐expert).
3Tanke 1994 evaluated four different automated phone messages: basic message, message with authority, message with importance, and message with authority and importance. No differences were seen between the different messages.

Figures and Tables -
Table 2. Summary of populations and interventions
Table 3. Optimal information size calculations

Outcome

Hypothesis

Power

α error

Proportion in control group

Proportion in intervention group

Total sample size required

Attendance at clinic appointment

Superiority

80%

5%

50%

75%

110

80%

90%

394

TB cure or treatment completion

Superiority

80%

5%

50%

75%

110

80%

90%

394

We performed calculations using http://www.sealedenvelope.com

Figures and Tables -
Table 3. Optimal information size calculations
Comparison 1. TB treatment: reminder versus none

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Attendance at single clinic appointment Show forest plot

2

Risk Ratio (M‐H, Random, 95% CI)

Subtotals only

1.1 Pre‐appointment phone call

1

615

Risk Ratio (M‐H, Random, 95% CI)

1.32 [1.10, 1.59]

1.2 Defaulter reminder letter

1

52

Risk Ratio (M‐H, Random, 95% CI)

5.04 [1.61, 15.78]

2 TB cure or treatment completion Show forest plot

3

778

Risk Ratio (M‐H, Random, 95% CI)

1.17 [1.11, 1.23]

2.1 Pre‐appointment phone call

1

98

Risk Ratio (M‐H, Random, 95% CI)

1.14 [1.02, 1.27]

2.2 Defaulter reminder letter or home visit

2

680

Risk Ratio (M‐H, Random, 95% CI)

1.17 [1.11, 1.24]

Figures and Tables -
Comparison 1. TB treatment: reminder versus none
Comparison 2. TB treatment: comparison of different reminders

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Attendance at single clinic appointment Show forest plot

1

121

Risk Ratio (M‐H, Fixed, 95% CI)

1.12 [0.87, 1.45]

2 TB cure or treatment completion Show forest plot

1

150

Risk Ratio (M‐H, Fixed, 95% CI)

1.2 [0.95, 1.51]

Figures and Tables -
Comparison 2. TB treatment: comparison of different reminders
Comparison 3. TB prophylaxis: reminder versus none

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Attendance at single clinic appointment Show forest plot

1

536

Risk Ratio (M‐H, Fixed, 95% CI)

1.30 [1.07, 1.59]

2 Attendance at final clinic appointment Show forest plot

1

Risk Ratio (M‐H, Random, 95% CI)

Subtotals only

2.1 Routine phone call every three months

1

157

Risk Ratio (M‐H, Random, 95% CI)

1.44 [1.21, 1.72]

2.2 Routine nurse home visit every three months

1

156

Risk Ratio (M‐H, Random, 95% CI)

1.46 [1.23, 1.74]

2.3 Routine doctor clinic every three months

1

159

Risk Ratio (M‐H, Random, 95% CI)

1.20 [0.98, 1.47]

Figures and Tables -
Comparison 3. TB prophylaxis: reminder versus none
Comparison 4. Skin test reading: reminder versus none

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Attendance at single clinic appointment Show forest plot

4

1900

Risk Ratio (M‐H, Random, 95% CI)

1.01 [0.92, 1.10]

1.1 Take home reminder card

2

711

Risk Ratio (M‐H, Random, 95% CI)

0.96 [0.88, 1.04]

1.2 Pre‐appointment phone call

3

1189

Risk Ratio (M‐H, Random, 95% CI)

1.06 [0.92, 1.21]

Figures and Tables -
Comparison 4. Skin test reading: reminder versus none
Comparison 5. Skin test reading: comparison of different reminders

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Attendance at single clinic appointment Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

1.1 Take‐home card versus postcard

1

Risk Ratio (M‐H, Fixed, 95% CI)

0.0 [0.0, 0.0]

1.2 Take‐home card versus telephone call

1

Risk Ratio (M‐H, Fixed, 95% CI)

0.0 [0.0, 0.0]

1.3 Postcard versus telephone call

1

Risk Ratio (M‐H, Fixed, 95% CI)

0.0 [0.0, 0.0]

Figures and Tables -
Comparison 5. Skin test reading: comparison of different reminders