Table 3.
Subject characteristics
| Patients N = 76 | Siblings N = 31 | Controls N = 31 | Statistic | p-value | |
| Age (SD) | 21.5 (2.9) | 22.8 (3.8) | 21.5 (3.1) | F = 2.27 | p = 0.11 |
| Gender (M/F) | 66/10 | 13/18 | 23/8 | χ2 = 23.03 | p <0.001 |
| Educational level (SD) | 4.45 (0.91) | 4.76 (1.15) | 4.83 (1.09) | F = 1.94 | p = 0.15 |
| VIQ (SD) | 89.2 (14.3) | 95.7 (11.1) | 105.6 (16.9) | F = 14.68 | p <0.001* |
| PIQ (SD) | 85.7 (13.0) | 98.6 (11.4) | 106.4 (14.4) | F = 31.35 | p <0.001* |
| FSIQ (SD) | 86.7 (13.8) | 96.7 (11.6) | 107.0 (15.5) | F = 25.12 | p <0.001* |
Subject characteristics (age, gender, and educational level) and verbal, performance, and full scale IQ scores (VIQ, PIQ, and FSIQ). Between-group differences in age, educational level, and between VIQ, PIQ, and FSIQ are calculated using ANOVA. Between-group differences in gender are calculated using a χ2 test. The p-values marked with * result from an overall ANOVA; all pairwise comparisons are significant.