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. Author manuscript; available in PMC: 2016 Oct 1.

Published in final edited form as: Drug Alcohol Depend. 2015 Aug 21;155:90–96. doi: 10.1016/j.drugalcdep.2015.08.009

Table 1.

Hazard model results for AI and white youth ages 12-17 with demographic covariates predicting initiation of intoxication, marijuana, and inhalants ¹

	Intoxication		Marijuana		Inhalants
	OR	CI	OR	CI	OR	CI
Intercept	.00^**	(0.00, 0.00)	.00^**	(0.00, 0.01)	.00^**	(0.00, 0.01)
Upper Great Lakes (UGL)	.87	(0.59, 1.28)	.80	(0.49, 1.29)	.54^**	(0.36, 0.81)
Southwest (SW)	.76	(0.44, 1.34)	.57^**	(0.42, 0.78)	.69	(0.31, 1.50)
Age	3.02^**	(2.65, 3.43)	2.34^**	(2.08, 2.63)	2.70^**	(2.30, 3.17)
Age²	.95^**	(0.94, 0.96)	.97^**	(0.97, 0.98)	.92^**	(0.91, 0.94)
Male	.82	(0.60, 1.13)	1.80^**	(1.19, 2.73)	.44^*	(0.24, 0.81)
UGL	1.55^**	(1.14, 2.12)	1.06	(0.77, 1.46)	1.25	(0.85, 1.85)
SW	1.27	(0.86, 1.87)	1.46^**	(1.21, 1.77)	.81	(0.40, 1.68)
American Indian (AI)	2.30^**	(1.54, 3.42)	10.50^**	(5.96, 18.49)	1.76^**	(1.29, 2.40)
Age*Male	.94^**	(0.90, 0.98)	.90^**	(0.85, 0.95)	1.01	(0.93, 1.09)
Age*AI	.94	(0.88, 1.00)	.81^**	(0.76, 0.88)	1.02	(0.98, 1.07)
Male*AI	1.00	(0.76, 1.31)	.69^*	(0.51, 0.94)	.95	(0.62, 1.47)

¹

: Numbers in table represent odds ratios. H₀: OR = 1.

^*

: p < .05;

^**

: p < .01.