Table 1.
Demographic Information
| Variable | M, SD:Controls | M, SD:Patients | t-Statistic (df) | P-value |
|---|---|---|---|---|
| Age | 15.82 (1.8) | 14.64 (2.1) | 1.36 (18) | n.s. |
| Handednessa | 0.72 (0.41) | 0.75 (0.13) | 0.25 (18) | n.s. |
| Educationb | 9.40 (0.97) | 8.80 (1.69) | 0.98 (18) | n.s. |
| Full-Scale IQc | 109.60 (14) | 97.80 (14) | 1.91 (18) | n.s. |
| Parental SESd | 36.95 (18.9) | 41.75 (18.4) | 0.57 (18) | n.s. |
| Age at onset | 11.20 (2.97) |
a
Based on the Annett Handedness Scale (Annett, 1985).
b
Listed in years.
c
Wechsler Abbreviated Scale of Intelligence (WASI).
d
Based on the Hollingshead method (Hollingshead, 1975).