Table 6.

Mixed Effects Linear Regression Model, unadjusted for baseline, from 30 day Time Line Followback (TLFB) calendar

TLFB Variables	Visit	I, Mean (SD)	Change in I, BL to 12 months	AC, Mean (SD)	Change in AC, BL to 12 months	P-value I vs. AC	Interaction p-value	Main effect p- value
Drinking days per month	Baseline	6.7 (4.5)		6.6 (4.5)		0.848	0.866	0.877
	3 month	5.5 (4.5)		5.7 (4.5)		0.777
	12 month	4.9 (4.5)	−1.8	5.1 (4.5)	−1.5	0.752
Mean drinks per drinking day	Baseline	5.0 (2.7)		4.6 (2.7)		0.165	0.480	0.297
	3 month	4.3 (2.7)		4.0 (2.7)		0.366
	12 month	3.5 (2.7)	−1.5	3.5 (2.7)	−1.1	0.992
Mean drinks per week	Baseline	9.1 (9.1)		7.7 (9.1)		0.170	0.449	0.369
	3 month	7.6 (9.1)		6.9 (9.1)		0.503
	12 month	5.5 (9.1)	−3.6	5.6 (9.1)	−2.1	0.913
Maximum drinks per day	Baseline	7.8 (4.4)		7.5 (4.4)		0.656	0.343	0.947
	3 month	6.3 (4.4)		6.1 (4.4)		0.722
	12 month	5.2 (4.4)	−2.6	5.7 (4.4)	−1.8	0.314

I = intervention; BL = baseline; AC = assessed control