Table 2.

Demographics of the first-degree relatives of patients with DSRELs and non-DSRELs schizophrenia and CCs

	DSRELs (n = 15)	Non-DSRELs (n = 40)	CCs (n = 55)	P
Gender (males), %*	33.3	42.5	40.0	0.826
Age (years), mean, s.d.†	38.0 (6.4)	39.7 (10.9)	39.2 (10.4)	0.941
Education (years), mean, s.d.†	9.9 (3.0)	11.3 (3.1)	10.8 (3.1)	0.136
Estimated IQ, mean, s.d.†	94.7 (14.3)	104.9 (13.7)	101.7 (11.9)	0.066

*X² test was used for categorical variables.

†Mann–Whitney test was used for continuous variables.