. Author manuscript; available in PMC: 2016 Apr 25.

Published in final edited form as: Biodemography Soc Biol. 2014;60(2):117–136. doi: 10.1080/19485565.2014.946590

Table 3. Multinomial Logistic Regressions, Wave 2 to 3 Transitions in Tobacco and Alcohol Use Behaviors.

Any Use	Baseline			+ School & Demographic Controls			+Psychological Controls
Any Use	Tobacco vs. None	Alcohol vs. None	Co-Use vs. None	Tobacco vs. None	Alcohol vs. None	Co-Use vs. None	Tobacco vs. None	Alcohol vs. None	Co-Use vs. None
Excess Proportion	1.122^*	1.139^*	1.212^*	0.989	1.092^*	1.074^*	0.985	1.090^*	1.073^*
Proportion Co-Users	1.046^*	1.048^*	1.068^*	0.945	1.088^*	1.060^*	0.943	1.088^*	1.061^*

	Baseline			+ School & Demographic Controls			+Psychological Controls
Heavy Use	Tobacco vs. None	Alcohol vs. None	Co-Use vs. None	Tobacco vs. None	Alcohol vs. None	Co-Use vs. None	Tobacco vs. None	Alcohol vs. None	Co-Use vs. None

Excess Proportion	1.419^*	1.292^*	1.439^*	1.264^*	1.176^*	1.200^*	1.264^*	1.173^*	1.199^*
Proportion Co-Users	1.252^*	1.170^*	1.259^*	1.210^*	1.127^*	1.154+	1.211^*	1.124^*	1.153+

NOTE:

⁺

<.10;

: p<.05.

All models include controls for previous wave health behavior. School and demographic controls include controls for race, gender, age, and school proportion smoking and drinking. Psychological controls include an index of delinquent behaviors and CES-D score.