. Author manuscript; available in PMC: 2013 Jan 3.

Published in final edited form as: J Abnorm Child Psychol. 2012 Oct;40(7):1099–1110. doi: 10.1007/s10802-012-9628-5

Table 1.

Descriptives for Predictor and Outcome Variables

	Males (n=266)	Females (n=250)
Adolescent Ratings in 6^th Grade	M (SD)	M (SD)	p
CU	1.99 (1.70)	1.28 (1.30)	< .01
CD	2.92 (3.67)	1.35 (2.20)	< .01
Parent Ratings in 6^th Grade	M (SD)	M (SD)	p
CU	2.09 (1.72)	1.68 (1.65)	< .01
CD	2.00 (2.50)	1.36 (2.05)	< .01
% Endorsing Use by 9^th Grade	%	%	p
Alcohol Use	37.55	40.87	0.44
Marijuana Use	18.96	18.65	0.93
Alcohol and Marijuana Use	17.1	15.87	0.71
Impairment	22.3	25.4	0.41
Number of Visits Reporting Use by 9^th Grade	M (SD)	M (SD)	p
Alcohol Use	.40 (.77)	.58 (1.02)	< .05
Marijuana Use	.25 (.65)	.24 (.64)	0.94
Alcohol and Marijuana Use	.16 (.47)	.20 (.60)	0.44
Impairment	.34 (.73)	.39 (.85)	0.51

Note: CU = Sum of 4-item Callous-Unemotional scale, with item scores ranging from 0-Not at all true to 2-Definitely true (Frick & Hare, 2001); CD = Conduct disorder symptom count from DISC (Shaffer et al., 2000). Use = Any use in last 6 mo; Impairment = Any impairment in last 6 mo; Number of visits = frequency of assessments when any use or impairment was endorsed.