Table 1

Group demographics

	Familial SCZ	Familial SCZ relative	Sporadic SCZ	Sporadic SCZ relative	Control	p Value
Number	32	63	28	44	47
Age	37 (4.5)	42 (16.5)	32 (8.3)	53 (12.5)	33.0 (13.5)	0.0001^1-150
Sex (% male)	59.0	42.9	57.1	40.9	44.7	0.38^†
Age of onset of symptoms	20.7 (4.5)		20.3 (4.51)			0.60^‡

↵1-150 ANOVA; ^†χ² test; ^‡ t test.
p Value for group differences is based on statistical tests appropriate to the nature of variables. Values are mean (SD) except for sex.
SCZ=schizophrenia.