TABLE IV.
Familial patients (n = 35) | Sporadic patients (n = 68) | ||
---|---|---|---|
Age (years) | 31.5 ± 10.5 | 32.2 ± 10.0 | t=0.37, df=101, P=0.715 |
Sex (male;female) | 24:11 | 45:23 | Chi-square=0.06, df=1, P=0.81 |
Socioeconomic status | 26.8 ± 12.0 | 37.5 ± 11.1 | t=3.22, df=47, P=0.002 |
Education, years | 11.8 ± 3.0 | 13.7 ± 4.8 | t=2.08, df=93, P=0.041 |
Age of onset, years | 21.1 ± 7.2 | 19.5 ± 5.1 | t=1.28, df=97, P=0.204 |
Full-scale IQ | 81.7 ± 11.5 | 89.8 ± 13.5 | t=2.31, df=51, P=0.025 |
Verbal IQ | 84.0 ± 12.0 | 94.2 ± 15.0 | t=2.65, df=51, P=0.011 |
Performance IQ | 79.9 ± 11.8 | 85.5 ± 12.5 | t=1.67, df=51, P=0.10 |