TABLE 2.

Past 30-day Binge Drinking and Marijuana Use by Gender at Baseline and Six-Month Follow-up (n = 453), UCLA Access to Care Project, 2006–2009

Substance	Gender	Baseline % (n)	Follow-up % (n)
Binge Drinking (Four or Five Drinks)	Overall	89.2% (404)	84.1% (381)
Binge Drinking (Four Drinks)	Female	73.4% (185)	71.4% (175)
	Male	90.6% (164)	88.6% (155)
Binge Drinking (Five Drinks)	Female	64.3% (162)	58.4% (143)
	Overall	45.9% (208)	39.1% (177)
Marijuana Use*	Male	58.1% (108)	51.1% (95)
	Female	37.5% (100)	30.7% (82)

Binge drinking proportions calculated using only students who reported at least one day of drinking at baseline, n = 432.

^*Differences in proportions at baseline and follow up are statistically significant for marijuana use overall and by gender at p < .05 level (McNemar’s test).