Table 4.

Results of the multinomial logistic regression analysis for adolescent marijuana dependence

	Reference category non-user							Ref. cat. non-problem user
	Non-dependent user			Dependent user				Dependent user
	p	OR (95 % CI)		p	OR (95 % CI)			p	OR (95 % CI)
Intercept	<0.001	–	–	<0.001	–	–		0.019	–	–
Age	0.112	1.155	(0.967–1.380)	0.251	1.285	(0.838–1.971)		0.649	1.113	(0.703–1.760)
Gender (male)	<0.001	1.747	(1.279–2.386)	0.001	2.736	(1.567–4.778)		0.142	1.566	(0.860–2.850)
Occupational status (studying/reference)	–	–	–	–	–	–		–	–	–
Occupational status (working)	0.227	1.309	(0.846–2.026)	0.569	1.256	(0.574–2.749)		0.922	0.959	(0.418–2.203)
Occupational status (at home)	0.029	1.637	(1.051–2.551)	<0.001	4.417	(2.339–8.344)		0.005	2.698	(1.344–5.415)
Socioeconomic status (low/reference)	–	–	–	–	–	–		–	–	–
Socioeconomic status (middle)	0.644	1.089	(0.758–1.566)	0.208	0.689	(0.385–1.232)		0.154	0.632	(0.336–1.188)
Socioeconomic status (high)	0.767	1.064	(0.705–1.607)	0.126	0.559	(0.265–1.177)		0.112	0.525	(0.237–1.163)
Adolescent past-year alcohol use (yes)	<0.001	11.588	(6.496–20.671)	<0.001	23.293	(5.436–99.813)		0.378	2.010	(0.426–9.490)
Neighborhood risk	0.281	0.985	(0.958–1.013)	0.941	1.002	(0.956–1.050)		0.507	1.017	(0.967–1.070)
Survey year (2008)	0.828	1.035	(0.760–1.410)	0.004	0.400	(0.216–0.741)		0.004	0.387	(0.202–0.741)
Peer marijuana use (yes)	<0.001	7.476	(4.694–11.906)	<0.001	9.518	(3.236–27.993)		0.683	1.273	(0.399–4.059)
Family marijuana use (yes)	<0.001	3.838	(2.327–6.838)	<0.001	10.663	(5.073–22.414)		0.015	2.674	(1.210–5.907)
Age × peer marijuana use (yes)	0.551	0.940	(0.769–1.151)	0.264	0.774	(0.494–1.214)		0.431	0.823	(0.507–1.337)
Age × family marijuana use (yes)	0.140	0.828	(0.644–1.064)	0.438	0.874	(0.621–1.229)		0.776	1.055	(0.730–1.524)

Significant p values and odd ratios are printed in italics

n = 4269

p p value, OR odds ratio, CI confidence interval