. Author manuscript; available in PMC: 2013 Jun 16.

Published in final edited form as: Int J Drug Policy. 2010 Mar 29;21(5):432–436. doi: 10.1016/j.drugpo.2010.02.005

Table 4. ANCOVA results: Intervention and Assessment-only condition during each phrase.

Variable	Intervention Means (SD) (n = 115)			Control Means (SD) (n =110)			ANCOVA (T0-T1)		ANCOVA (T0-T2)
	Baseline	Post-intervention		Baseline	Post-intervention		F	d	F	d
	Baseline	1 month	3-month	Baseline	1 month	3-month	F	d	F	d
AUDIT scores	12.33 (7.02)	6.12 (5.22)	4.79 (4.0)	9.55 (5.6)	10.14 (5.82)	10.27 (5.3)	21.79^†	0.57	60.9^†	0.65
RAPI Scores	1.12 (0.45)	0.65 (0.26)	0.64 (0.21)	0.80 (0.32)	0.72 (0.27)	0.70 (0.23)	6.04^*	0.27	6.46^*	0.21
DSRQ scores	1.68 (0.59)	1.83 (0.71)	1.93 (0.77)	1.91 (0.66)	1.86 (0.72)	1.74 (0.66)	0.84	0.22	0.09	0.25

Note. p values = group and time interaction,

^†

p <0.001,

p <0.02,

d = effect size, T0-T1 = baseline to 1 month post-intervention, T0-T2 = baseline to 3-month post-intervention, AUDIT: Alcohol Use Disorders Identification Test; RAPI: The Rutgers Alcohol Problem Index; DSRQ: Drinking Self-Regulation Strategies, Covariates were baseline levels of all outcome measures, program of study, academic years, problems' experience of alcohol use, and smoking behavior