| Scale/measure | Number of items | Scoring |
| Conners' Abbreviated Symptoms Questionnaire for Teachers (ASQ) | 10 items pertaining to the child's behavior | Rated on a 4‐point Likert scale, ranging from 0 (not at all), 1 (just a little), 2 (pretty much) to 3 (very much true), with a possible total score ranging from 0 to 30. Higher scores indicate worse symptoms |
| Yale Global Tic Severity Scale (YGTSS) | 5 items on the number, frequency, intensity, complexity, and interference from motor tics, and 5 items on the number, frequency, intensity, complexity, and interference from vocal tics, and 1 item on overall impairment | The Total Motor Tic Score is derived by adding the 5 motor tics items (each item ranges from 0 to 5, total motor tic score ranges from 0 to 25). The Total Vocal Tic Score is derived by adding the 5 phonic tics items (each item ranges from 0 to 5, total vocal tic ranges from 0 to 25). The Total Tic Score is a summation of the Total Motor Tic and Total Vocal Tic Scores. The Overall Impairment Rating is rated on a 51‐point scale anchored by 0 (no impairment) and 50 (severe impairment). Finally, the Global Severity Score is a summation of the Total Motor Tic Score, Total Vocal Tic Score, and Overall Impairment Rating (range 0 to 100). Higher scores indicate worse symptoms. |
| Global Tic Rating Scale | 9 items, with the first 5 referring to the frequency of motor (3 items) and phonic tics (2 items) according to body region, which are summed to produce motor and phonic tic frequency subscores, respectively | All items are rated on a scale from 0 (never) to 3 (very much). Total score ranges from 0 to 27. Higher scores indicate worse symptoms |
| ADHD Rating Scale IV ‐ Parent Version | 18‐item questionnaire. 9 questions each on inattention and hyperactivity‐impulsivity, where the odd‐numbered items represent the inattention subscale, and the even‐numbered items represent the hyperactive/impulsive subscale | Items coded on 4‐point Likert scale using scores 1 (never or rarely), 2 (sometimes), 3 (often), or 4 (very often). Total score ranges from 18 to 52. Raw scores are converted to percentiles. |
| ADHD Parent Linear Analogue Scale | 10‐cm line on which both the parent and physician separately rank symptoms | The ends of each line represent 0 (no symptoms) and 10 (most severe) |
| Child Behaviour Checklist (CBCL) | 113 items across 8 subscales assessing maladaptive behavioral and emotional problems: -
withdrawn -
somatic complaints -
anxious/depressed -
social problems -
thought problems -
attention problems -
delinquent problems -
aggressive behavior | Items are coded from 0 to 2, scored 0 (not at all), 1 (somewhat true), or 2 (very true). CBCL profile for each category, with scores below the 95th percentile in the normal range, and above the 98th percentile in the clinical range. Higher scores indicate worse symptoms. |
| Conners' Abbreviated Parent Rating Scale | 48 items across 6 subscales: -
conduct problems -
learning problems -
psychosomatic -
impulsive/hyperactive -
anxiety -
hyperactivity index | All items are rated on a scale from 0 (never) to 3 (very much). Total score ranges from 0 to 144. Higher scores indicate worse symptoms |
| IOWA Conners' Teacher Rating Scale | 10 items. Consists of 5‐item subscales designed to assess inattention/overactivity and aggression Inattention/overactivity: -
fidgeting -
hums and makes other odd noises -
excitable, impulsive -
inattentive, easily distracted -
fails to finish things he starts (short attention span) Aggression: | Scored 0 (not at all), 1 (just a little), 2 (pretty much), or 3 (very much). Total score ranges from 0 to 30. Higher scores indicate worse symptoms |
| Mothers' Objective Method for Subgrouping | Contains 10 (hyperactivity or ADHD, or both) symptoms arranged in a checklist format. Generates a hyperactivity scale score and an aggression scale score | 1 indicates checked and 0 unchecked. Total score ranges from 0 to 10. Higher scores indicate worse symptoms |
| Continuous Performance Task (CPT) | Computer‐administered and scored measure of sustained visual attention and motor response inhibition. The test takes about 15 minutes to administer and yields measures of omissions, commissions, and reaction time. | Omission errors measure inattention, commission errors measure impulsivity |
| Conners' Teacher Rating Scale | 39 items clustered into 5 factors, including conduct problems, daydreaming, inattention, anxious‐fearful, and hyperactive behavior ADHD Teacher 39‐Item | All items are rated on a scale from 0 (never) to 3 (very much). Total score ranges from 0 to 137. Raw scores for each scale are converted to T scores, incorporating normative adjustments for age and sex, with scores of at least 70 considered clinically elevated |
| Conners' Continuous Performance Task (CPT) | Visual‐motor task. Respondents must rapidly and accurately hit the space bar after every letter presented except the letter 'X'. Several variables may be derived from the Conners' CPT, including errors of omission and commission, mean hit reaction time (RT), mean hit RT standard error. | Omission errors measure inattention, commission errors measure impulsivity |
| Tourette Syndrome Severity Scale | 5‐item scale -
Are the tics noticeable to others? -
Do the tics elicit comments? -
Is the patient considered odd or bizarre? -
Do the tics interfere with functioning? -
Is the patient incapacitated, homebound, or hospitalized? | Higher scores indicates worse symptoms |
| Tourette Syndrome Clinical Global Impression (CGI) Scale | Observer‐rated scale that measures illness severity (CGI‐S), or global improvement (CGI‐I) | 7‐point scale, with the severity of illness scale (CGI‐S) using a range of responses from 1 (normal) to 7 (among the most severely ill people). CGI‐I scores range from 1 (very much improved) to 7 (very much worse) |
| 2‐Minute Tic and Habit Count | The physician counts separately the number of brief, jerky (i.e. tics) and rhythmic (i.e. stereotypic, habit) movements and vocalizations during quiet conversation in an office setting. | Higher scores indicates worse symptoms |
| Tic Symptom Self‐Report | 40‐item checklist containing 20 motor tic items and 20 phonic tic items | 0–3 scale corresponding with absent (score of 0) to very frequent and forceful (score of 3). Total score ranges from 0 to 120. Higher scores indicate worse symptoms |
| Goetz Tic Severity Scale | Videotape protocol involving a 10‐minute film of people placed in front of a video camera in a quiet room. 2 body views are recorded, full frontal body (far) and head and shoulders only (near), under 2 conditions: relaxed with the examiner in the room, and relaxed with the patient alone in the room 5 domains are rated: | 0–4 scoring format. For all domains, 0 represents normal function without evidence of tic disability. Higher scores indicate worse symptoms |
| Hopkins Motor/Vocal Scale | Consists of a series of linear analog scales (10 cm) on which both the parent and physician separately rank each tic (motor and vocal) symptom, taking into consideration its frequency, intensity, degree of interference, and impairment | The ends of each line represent 0 (no tics) and 10 (most severe). The line can be subdivided roughly into 4 ranges: mild, moderate, moderately severe, and severe |
| Du Paul ADHD Rating Scale | 14 items, assessing separate factors of inattention and hyperactivity‐impulsivity | Rated on a 0 (normal) to 3 (severe) scale, yielding a total score ranging from 0 to 42. Higher scores indicate worse symptoms |
| Parent Conners' Questionnaire Hyperactivity Index | 10‐item rating scale identifying hyperactive children | Each item is rated from 0 to 3 (range 0–30). Higher scores indicate worse symptoms |
