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. 2001 May 29;98(12):6917–6922. doi: 10.1073/pnas.111134598

Table 1.

Demographics

Variable Patients (n = 175) Siblings (n = 219) Controls (n = 55)
Age 36.1 (8.5) 35.6 (8.8) 33.9 (9.2)
Gender (M/F) 138/37* 97/122 23/32
Education years 13.7* (2.1) 15.5 (2.5) 15.7 (2.5)
WRAT 102.0* (12.1) 106.3 (11.2) 107.3 (11.4)
IQ 92.8* (13.1) 107.4 (10.6) 109.1 (11.5)
WCST perseverative errors 37.6* (12.6) 45.2 (9.5)* 49.4 (9.0)

Means ± SD. 

*

Significantly different compared to controls (P < 0.05). 

Significantly different compared to siblings (P < 0.05).