Table 6.

Adjusted Relative Risk Ratios from Multivariable Multinomial Logistic Regressions of Latent Marijuana Class Membership on Covariates: Early Young Adult and Young Adult versus Persistent Use Duration Patterns

	Early YA		YA		Persistent	Early YA		YA		Persistent
	Moderate Users		Moderate Users		Moderate Users	Heavy Users		Heavy Users		Heavy Users
	ARR	p	ARR	p	[Base Class]	ARR	p	ARR	p	[Base Class]
Gender (referent=female)
Male	0.83	0.182	0.66	0.014		1.03	0.860	1.35	0.096
Race/ethnicity (referent=White)
Black	0.70	0.174	0.76	0.354		0.67	0.334	0.77	0.487
Hispanic	1.30	0.576	0.90	0.849		0.91	0.894	1.19	0.822
Other	1.13	0.725	1.30	0.547		0.55	0.191	1.08	0.829
Parental education (referent=no college)
Some college	0.75	0.040	0.82	0.242		0.85	0.310	0.84	0.315
Religious commitment at age 18 (referent=high)
Medium	1.07	0.672	0.96	0.844		1.15	0.537	1.16	0.528
Low	0.91	0.584	0.77	0.178		0.81	0.330	0.91	0.688
Binge drinking at age 18 (referent=none)
Any	0.70	0.016	0.50	<0.001		1.11	0.589	1.38	0.113
Cigarette smoking at age 18 (referent=none)
Any	0.77	0.075	0.48	<0.001		1.49	0.035	1.09	0.645
Ever married between ages 19/20 to 29/30 (referent=no)
Yes	2.44	<0.001	1.15	0.378		1.39	0.046	1.21	0.282
Ever graduate from college between ages 19/20 to 29/30 (referent=no)
Yes	1.07	0.635	1.07	0.676		0.95	0.790	0.89	0.598
Income from welfare/unemployment between ages 35 to 45 (referent=none)
Any	0.52	<0.001	0.67	0.032		0.39	<0.001	1.09	0.632
Alcohol use from ages 35 to 45 (past 30 days)
Average frequency	0.77	<0.001	0.89	0.004		0.74	<0.001	0.92	0.015
Cigarette use from ages 35 to 45 (past 30 days)
Average frequency	0.99	0.149	1.00	0.930		0.95	<0.001	0.97	<0.001

Notes: N (unweighted) = 9,831. ARR = Adjusted relative risk ratio; obtained from models simultaneously controlling for past 12-month marijuana use latent class membership as well as gender, race/ethnicity, parental education, religious commitment, age 18 binge drinking and cigarette use, marriage, college graduation, ages 35-45 income from welfare/unemployment, ages 35-45 cigarette use frequency, and 35-45 alcohol use frequency, and cohort. Missing data on covariates were addressed by imputing means (for continuous measures) together with the use of missing data indicators (results for missing indicators not shown). Bold font indicates significant (p<.01) estimates. ARRs from classes other than specified early young adult and young adult users not shown.