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| UWM (n = 23) | UCLA (n = 20) | Total (N = 43) | |
| Mean age (SD) | 10.9 (2.6) | 10.7 (1.9) | 10.8 (2.3) |
| IQ (SD) | 112 (17.3) | 103 (12.8) | 108 (15.9) |
| Gender | |||
| Male | 21 | 18 | 39 |
| Female | 2 | 2 | 4 |
| YGTSS (intake) | |||
| Motor total (SD) | 14.3 (4.1) | 16.7 (4.1) | 15.4 (4.2) |
| Vocal total (SD) | 7.7* (6.4) | 12.7* (6.8) | 10.0 (7.0) |
| Overall total (SD) | 21.7* (9.4) | 29.7* (9.8) | 25.4 (10.3) |
| Tic diagnosis | |||
| Tourette's syndrome | 21 | 20 | 41 |
| Chronic tic disorder | 2 | 0 | 2 |
| Comorbidity status | |||
| Yes | 18 | 16 | 34 |
| No | 5 | 4 | 9 |
p < .05.
