Table 1.
Group demographic and clinical characteristics
| CTRL (n = 20) | ADHD (n = 12) | ASD (n = 10) | ADHD+ASD (n = 13) | Group comparisons | ||
|---|---|---|---|---|---|---|
| Age | 12.58 (1.92) | 11.94 (2.35) | 12.52 (1.76) | 12.51 (2.36) | ns | |
| Gender ratio (%male) | 80 | 53 | 90 | 92.3 | ns | |
| IQ (WASI) | 111.35 (8.85) | 97.00 (17.06) | 106.00 (8.52) | 95.54 (16.87) | ADHD+ASD < CTRL | |
| SCQ total | 2.78 (2.02) | 9.58 (6.83) | 21.40 (8.90) | 23.31 (7.69) | CTRL < All; ASD > ADHD, ADHD+ASD > ADHD | |
| RSI | 0.89 (0.83) | 3.33 (2.71) | 8.20 (4.71) | 9.10 (3.35) | ||
| SC | 1.44 (1.10) | 2.92 (2.07) | 6.70 (3.16) | 7.38 (2.36) | ||
| RRBI | 0.33 (0.69) | 2.50 (2.65) | 4.80 (2.39) | 5.15 (2.41) | ||
| Conners ADHD-index | 45.89 (5.34) | 79.33 (11.00) | 67.70 (11.83) | 79.69 (5.04) | CTRL < All; ADHD > ASD, ADHD+ASD > ASD | |
| Comorbid diagnoses (n per group) | ||||||
| Dep/Anxiety | 0 | 2 | 1 | 5 | ||
| CD/ODD | 0 | 7 | 5 | 6 | ||
| OCD | 0 | 0 | 0 | 1 | ||
WASI Wechsler abbreviated scale of intelligence, SCQ social communication questionnaire, RSI restricted social interaction sub-scale of SCQ, SC social communication sub-scale, RRBI restrictive, repetitive behaviors sub-scale of SCQ, CD/ODD conduct disorder/oppositional defiant disorder, OCD obsessive compulsive disorder