. Author manuscript; available in PMC: 2017 Dec 1.

Published in final edited form as: Alcohol Clin Exp Res. 2016 Oct 21;40(12):2648–2655. doi: 10.1111/acer.13240

Table 3.

Average treatment effects (ATE) prior to and after propensity score matching.

	Cross-sectional sample		Longitudinal sample, wave 3 outcomes		Longitudinal sample, wave 4 outcomes
	ATE	% red.	ATE	% red.	ATE	% red.
Frequent binge drinking in the last month
Unmatched	.201^*	59.2%	.122^*	24.6%	.091^*	48.4%
Matched	.082		.092^*		.047
Alcohol related problems
Unmatched	.268^*	63.4%	.602^*	54.7%	.564^*	50.5%
Matched	.098		.273^*		.279^*
Alcohol related arrest or citation
Unmatched	.172^*	0.6%	.063^*	6.3%	.090^*	-2.2%
Matched	.171^*		.059^*		.092^*
Marijuana use
Unmatched	.222^*	60.4%	.288^*	33.7%	.246^*	50.8%
Matched	.088		.191^*		.121^*
Hard drug use
Unmatched	.114^*	38.6%	.048^*	18.8%	.053^*	3.8%
Matched	.070^*		.039		.051^*

indicates p<.05