Table 5.

Stepwise Regression Results with Contextual Factors on 21^st Birthday Drinking

Outcome	Model	Predictor	R2
Drinks	1	Fraternity/Sorority Members	.156
	2	+ Bar	.262
	3	+ Casual Acquaintances	.273
	4	+ Romantic Partner	.283
	5	+ Friends	.289
	6	+ Roommate	.292
eBAC	1	Bar	.146
	2	+ Fraternity/Sorority Members	.226
	3	+ Roommate	.241
	4	+ Casual Acquaintances	.248
	5	+ Romantic Partner	.256
	6	+ Friends	.261