. Author manuscript; available in PMC: 2016 Jan 31.

Published in final edited form as: Dev Psychopathol. 2015 Feb;27(1):37–49. doi: 10.1017/S095457941400128X

Table 1.

Pretest Equivalence of Prevention Condition by Genotype Status

Variables at Pretest	Control				AIM				F	p
	DRD4 s alleles (n = 94)		DRD4 l alleles (n = 55)		DRD4 s alleles (n = 84)		DRD4 l alleles (n = 58)
	M	SD	M	SD	M	SD	M	SD
Gender, male	0.43	0.50	0.47	0.50	0.37	0.48	0.29	0.46	1.51	.21
SES risk index	2.05	1.48	1.93	1.45	1.99	1.33	2.26	1.24	0.64	.59
Family risk	0.02	2.94	−0.12	2.80	−0.08	2.96	0.20	3.13	0.14	.94
Vulnerability cognitions	0.10	2.41	0.25	2.24	−0.18	1.61	−0.11	1.91	0.61	.61

	n	%	n	%	n	%	n	%	χ²	p

Drug use									3.91	.69
No use	71	75.5	41	74.5	63	75.0	44	75.9
Occasional use	11	11.7	8	14.5	16	19.0	9	15.5
Regular use	12	12.8	6	10.9	5	6.0	5	8.6