Table 7.

Main effects and changes over time, from 30 day TLFB: GEE and Mixed Effects Linear Regression Models

Part A: CATEGORICAL VARIABLES	Visit	AOR I vs. AC (95% CI)		P-value for AOR	Interaction p-value	Main effect p-value
Carried a weapon	3 month	0.63 (0.39–1.04)		0.071	0.199	0.232
	12 month	0.98 (0.57–1.68)		0.928
Had unplanned sex after drinking	3 month	0.82 (0.51–1.33)		0.422	0.995	0.296
	12 month	0.82 (0.49–1.38)		0.461
Had sex without condom/birth control     after drinking	3 month	1.06 (0.64–1.77)		0.816	0.919	0.829
	12 month	1.02 (0.59–1.78)		0.931
Got into a fight after drinking	3 month	0.73 (0.39–1.37)		0.331	0.970	0.200
	12 month	0.72 (0.35–1.47)		0.367
Drove a car after drinking	3 month	1.11 (0.66–1.85)		0.699	0.900	0.695
	12 month	1.06 (0.62–1.81)		0.828
Rode in a car with a person who was     drunk or high after drinking	3 month	0.89 (0.59–1.34)		0.579	0.248	0.905
	12 month	1.17 (0.77–1.79)		0.461
Got injured after drinking	3 month	0.75 (0.27–2.06)		0.577	0.664	0.183
	12 month	0.56 (0.23–1.36)		0.200
In the past 30 days, got drunk 1+ days	3 month	0.72 (0.45–1.14)		0.162	0.193	0.469
	12 month	1.04 (0.68–1.61)		0.846
Got high on alcohol 1+ days (adjusted for     BL using # drinking days on TLFB)	3 month	0.76 (0.49–1.17)		0.207	0.357	0.378
	12 month	0.96 (0.64–1.45)		0.858
High on marijuana 1+ days (adjusted for     BL using days smoked from TLFB)	3 month	0.75 (0.45–1.23)		0.249	0.134	0.811
	12 month	1.18 (0.71–1.97)		0.522
High on other drugs 1+ days	3 month	0.81 (0.44–1.48)		0.495	0.417†	0.818†
	12 month	1.15 (0.58–2.27)		0.693
Exceeded 5+/4+ drinks (dichotomous)	3 month	1.10 (0.73–1.66)		0.653	0.768	0.731
	12 month	1.02 (0.69–1.51)		0.929
Part B: CONTINUOUS VARIABLES	Visit	I x (SD)	AC x (SD)	P-value I vs. AC	Interaction p-value	Main effect p-value
Drinking days	3 month	5.5 (4.5)	5.7 (4.5)	0.695	0.986	0.608
	12 month	4.9 (4.5)	5.1 (4.5)	0.673
Mean drinks per drinking day	3 month	4.2 (2.9)	4.1 (2.9)	0.779	0.474	0.809
	12 month	3.4 (2.9)	3.6 (2.9)	0.523
Mean drinks per week	3 month	7.4 (7.9)	7.1 (7.9)	0.719	0.430	0.870
	12 month	5.3 (7.9)	5.9 (7.9)	0.545
Maximum # drinks per day	3 month	6.3 (4.2)	6.1 (4.2)	0.817	0.221	0.531
	12 month	5.1 (4.2)	5.8 (4.2)	0.224
Days drunk	3 month	3.9 (3.6)	4.5 (3.6)	0.236	0.112	0.739
	12 month	4.0 (3.6)	3.7 (3.6)	0.551
High on alcohol (adjusted for BL #     drinking days by TLFB)	3 month	4.8 (4.6)	4.7 (4.6)	0.927	0.293	0.374
	12 month	4.4 (4.6)	3.6 (4.6)	0.184
High on marijuana (adjusted for BL #days     used from TLFB)	3 month	10.2 (6.6)	9.8 (6.6)	0.668	0.447	0.315
	12 month	8.2 (6.6)	7.0 (6.6)	0.211
High on other drugs	3 month	0.9 (3.0)	1.3 (3.0)	0.281	0.380†	0.491†
	12 month	0.5 (3.0)	0.6 (3.0)	0.962

^†not adjusted for baseline measure

TLFB = Time Line Followback; GEE = generalized estimating equations; I = intervention; BL = baseline; AC = assessed control; AOR = adjusted odds ratio