Table 3.

Unique and shared variance in associations between alcohol use in Grade 7 and antisocial behavior in Grades 8 and 9.

Grade 8 antisocial behavior	Unique Variance (%)	Shared Variance (%)	Unique Variance (%)	Shared Variance (%)
	Grade 7 lifetime alcohol use		Grade 7 current alcohol use
Carrying a weapon	1.78	26.07	2.26	26.06
Threaten with a weapon	5.01	31.50	5.62	31.26
Police arrests	1.94	21.45	5.51	22.22
Stealing	4.31	26.10	10.31	27.15
Violent behavior	3.63	19.43	4.22	19.29
	Grade 7 frequent alcohol use		Grade 7 heavy episodic drinking
Carrying a weapon	.87	26.07	1.15	26.05
Threaten with a weapon	3.54	31.23	4.85	31.26
Police arrests	3.11	21.47	6.33	22.49
Stealing	5.25	26.14	8.59	26.63
Violent behavior	1.15	19.25	2.62	19.18

Grade 9 antisocial behavior	Unique Variance	Shared Variance	Unique Variance	Shared Variance
	Grade 7 lifetime alcohol use		Grade 7 current alcohol use
Carrying a weapon	2.49	16.32	2.35	16.30
Threaten with a weapon	2.07	14.36	3.55	14.53
Police arrests	1.07	12.96	2.05	13.16
Stealing	3.05	15.18	6.93	16.78
Violent behavior	1.73	13.75	2.68	13.84
	Grade 7 frequent alcohol use		Grade 7 heavy episodic drinking
Carrying a weapon	1.45	16.00	1.62	16.12
Threaten with a weapon	.82	14.41	1.88	14.35
Police arrests	.82	12.96	3.64	13.88
Stealing	1.77	15.01	2.83	15.14
Violent behavior	1.15	13.74	1.95	13.86

Note. N = 1,860 (lifetime alcohol use n = 906, current alcohol use n = 400, frequent alcohol use n = 110, heavy episodic drinking n = 133). Analyses compared alcohol users vs. non-users for each measure of alcohol use.

Unique variance refers to Pseudo R² for the unadjusted model examining associations between alcohol use and later antisocial behavior.

Shared variance refers to Pseudo R² for the fully adjusted model examining associations between all risk factors including alcohol use and antisocial behavior.