Table 4.

Results of multinomial logistic regression models predicting longitudinal alcohol use trajectory class memberships, stratified by gender: Growing Up Today Study, 2003–2010.

	Heavy drinkers versus non-drinkers		Moderate drinkers versus non-drinkers		Legal drinkers versus non-drinkers		Escalation to moderately heavy drinkers versus non-drinkers		Light drinkers versus non-drinkers
	OR (95% CI)	P-value	OR (95% CI)	P-value	OR (95% CI)	P-value	OR (95% CI)	P-value	OR (95% CI)	P-value
Women
Sexual orientation
Completely heterosexual	1.00 (referent)		1.00 (referent)		1.00 (referent)		1.00 (referent)		1.00 (referent)
Mostly heterosexual	3.07 (2.15,4.40)	<0.0001	2.40 (1.68, 3.41)	<0.0001	1.19 (0.79, 1.79)	0.4154	2.24 (1.51, 3.31)	< 0.0001	2.02 (1.40, 2.93)	0.0002
Bisexual	3.42 (1.49, 7.83)	0.0037	2.61 (1.15, 5.90)	0.0215	1.41 (0.54, 3.65)	0.4843	2.80 (1.14, 6.86)	0.0248	2.47 (1.07, 5.72)	0.0351
Lesbian	2.24 (0.75, 6.66)	0.1470	2.08 (0.71’ 6.08)	0.1823	0.93 (0–26, 3.42)	0.9182	2.91 (0.95, 8.95)	0.0622	2.70 (0.92, 7.97)	0.0719
Men
Sexual orientation
Completely heterosexual	1.00 (referent)		1.00 (referent)		1.00 (referent)		1.00 (referent)
Mostly heterosexual	2.24 (1.23,4.09)	0.0084	3.34 (1.83, 6.08)	<0.0001	2.29 (1.22,4.29)	0.0101	1.76 (0–90, 3.44)	0.0982
Bisexual	2.62 (0.35, 19.71)	0.3491	5.27(0.71, 39.20)	0.1046	1.79 (0–18, 17.89)	0.6202	2.12 (0–21, 21.11)	0.5227
Gay	1.48 (0.66, 3.35)	0.3444	3.38 (1.53, 7.48)	0.0027	1.64 (0–68,3.95)	0.2682	2.06 (0.86,4.93)	0.1053

Bold type indicates P < 0.05. Models were estimated with samples of 7465 women and 5027 men. OR = odds ratio; CI = confidence interval. The light drinking class only emerged for women. Models were adjusted for race/ethnicity, age, region, lifetime college attendance, number of surveys completed from 2003 to 2010 and mother’s household income. Models for women were also adjusted for life-time pregnancy.