Table 1.

Cohort 1: Demographics and clinical data.

	Control (n = 17)		Schizophrenia (n = 18)		t	df	p
	Mean	SD	Mean	SD
Age	30.8	5.6	38.6	9.7	−2.9	27	0.007*
Gender (F/M)	8/9		9/9		χ2 = 0.030	1	0.86
Education (years)	14.4	2.4	12.9	2.4	1.9	33	0.06
Cigarettes per day	13.4	3.8	16.3	7.9	−1.3	25	0.19
FTND	5.4	1.4	5.7	1.1	−0.85	31	0.40
Lifetime cigarette use (pack years)	9.1	5.5	15.1	10.3	−2.2	26	0.04*
BPRS total score			48	13.5
Chlorpromazine equivalents (mg/day)			539	504

FTND, fagerstrom test for nicotine dependence; BPRS, brief psychiatric rating scale.

^*Statistically significant.