Table 2:

Change in outcomes by weeks and group from adjusted models

	% days spent drinking		Avg. drinks per day in study
	M (SD)	Posterior p-values	M (SD)	Posterior p-values
Omnibus tests
Main effects
Group		p = 0.05		p = 0.13
Week		p = 0.99		p = 0.65
Interaction
Group x week		p < 0.001		p = 0.006
Comparisons between time points by group
Baseline vs. Week 1
CB-Abst	8.5% (1.9)	p < 0.001	0.2 (0.1)	p = 0.005
CB-Mon	0.5% (1.7)	p = 0.78	0.0 (0.1)	p = 0.68
Baseline vs. Week 4
CB-Abst	7.0% (2.1)	p < 0.001	0.2 (0.1)	p = 0.003
CB-Mon	0.0% (1.8)	p = 0.98	0.1 (0.1)	p = 0.43
Baseline vs. follow-up
CB-Abst	0.5% (1.6)	p = 0.77	0.0 (0.1)	p = 0.94
CB-Mon	−0.3% (1.7)	p = 0.83	0.0 (0.1)	p = 0.58
Week 1 vs. Week 4
CB-Abst	−1.4% (2.3)	p = 0.53	0.0 (0.1)	p = 0.75
CB-Mon	−0.5% (2.0)	p = 0.80	0.0 (0.1)	p = 0.66
Week 4 vs. follow-up
CB-Abst	−6.6% (2.0)	p < 0.001	−0.2 (0.1)	p = 0.002
CB-Mon	−0.3% (1.9)	p = 0.86	0.0 (0.1)	p = 0.85
Comparisons between groups by time point
Baseline
CB-Abst vs. CB-Mon	0.8% (2.1)	p = 0.70	0.1 (0.1)	p = 0.37
Week 1
CB-Abst vs. CB-Mon	8.8% (3.0)	p = 0.003	0.3 (0.1)	p = 0.04
Week 4
CB-Abst vs. CB-Mon	7.8% (3.2)	p = 0.01	0.3 (0.1)	p = 0.06
Follow-up
CB-Abst vs. CB-Mon	1.6% (2.6)	p = 0.54	0.1 (0.1)	p = 0.61