Table 1.
Demographic and clinical characteristics of the Tourette syndrome and healthy control groups
| Group; mean (SD)* | ||
|---|---|---|
|
|
||
| Characteristic | Healthy control, n = 27 | Tourette syndrome, n = 28 |
| Age, yr | 26.1 (11.9) | 26.6 (13.5) |
| Median [range] | 21 [16–62] | 22 [16–66] |
| Education, yr | 14.7 (2.9) | 13.8 (3.3) |
| Estimated verbal IQ23 | 121.7 (10.7) | 122.6 (14.5) |
| Sex, male:female | 21:6 | 24:4 |
| Beck Anxiety Inventory score24 | 5.6 (5.4) | 11.3 (7.3)† |
| Beck Depression Inventory score25 | 3.1 (2.6) | 5.8 (5.7)‡ |
| Yale–Brown Obsessive Compulsive Scale score26 | 3.1 (4.2) | 9.05 (6.7)§ |
| Conners’ Adult ADHD Index score27 | 8.1 (4.9) | 11.5 (6.3)‡ |
| Yale Global Tic Severity Scale score28 | — | 30.7 (12.9) |
| Motor tic severity, current | — | 12.1 (4.0) |
| Vocal tic severity, current | — | 5.9 (4.9) |
ADHD = attention-deficit/hyperactivity disorder; SD = standard deviation.
*
Unless otherwise indicated.
†
p < 0.01.
‡
p < 0.05.
§
p < 0.001.