Table 1.

Descriptive data for other study variables for the subsample of men for whom imaging data were available (n = 139)

	N	Min-Max	M	SD
Demographic covariate (age 20)
Family monthly income ($)	139	300.00–4000.00	1010	710
Age of drinking onset	123	9.00–20.00	15.48	2.19
Psychiatric comorbidities (DMS-IV symptom counts at age 20)
Major Depressive Disorder	139	.00–6.00	.30	1.17
Generalized Anxiety	139	.00–5.00	.12	.66
Social Phobia	139	.00–5.00	.38	1.23
Antisocial Personality Disorder	139	.00–5.00	.48	1.13
Post-traumatic Stress Disorder	139	.00–13.00	.38	2.02
Personality covariates
Impulsivity (age 20)	139	9.00–60.00	29.31	9.09
Extraversion (age 20)	139	12.00–40.00	27.00	5.37
Alcohol and substance Use (DSM-IV symptoms at age 20)
Alcohol Use & Dependence (age 20)	139	.00–9.00	.56	1.39
Drug Use & Dependence (age 20)	139	.00–8.00	.92	1.78
Dependent variables in final model
Alcohol Use & Dependence (age 22)	139	.00–9.00	.65	1.61
Drug Use & Dependence (age 22)	139	.00–9.00	.71	1.52
Antisocial Personality Disorder (age 22)	139	.00–6.00	.63	1.44

Note. Findings were similar when we accounted for psychiatric comorbidities using diagnoses instead of symptom count. The number of participants meeting diagnostic criteria was as follows at age 20: Major Depressive Disorder, N=12 (9%), Generalizing Anxiety Disorder, N=1 (1%), Social Phobia, N=10 (7%), Antisocial Personality Disorder, N=11 (8%), Post-traumatic stress disorder, N=2 (1%), and Alcohol Use and Dependence, N=18 (13%). At age 22, the number of participants meeting criteria for Alcohol Use and Dependence was N=28 (20%).