Table 1. Demographic characteristics of all subjects.
| Variables | Range | Patients | Controls | Statistical significance | Percent reporting |
|---|---|---|---|---|---|
| Number of subjects | 85 | 86 | - | 100 | |
| Race (% Caucasian) | 50.3 | 77.3 | ns | 99 | |
| Gender (% male) | 69.4 | 59.3 | ns | 100 | |
| Handedness* (% right) | 96.5 | 92.9 | ns | 100 | |
| Mean age (sd) | 19-65 | 36.9 (11.6) | 37.3 (12.4) | ns | 100 |
| Subject's mean years of education (sd) | 5-24 | 13.3 (1.8) | 16.1 (2.5) | <0.001 | 90 |
| Mother's mean years of education (sd) | 0-21 | 12.9 (3.3) | 13.8 (3.4) | ns | 82 |
| Father's mean years of education (sd) | 0-22 | 14.2 (3.3) | 14.6 (3.6) | ns | 81 |
| Mean premorbid FSIQ† estimate (sd) | 85-126 | 105.4 (9.7) | 112.3 (8.4) | <0.001 | 94 |