Table 4.

Model Estimates for Alcohol Use Outcomes at Each Time point

Outcome	Time point	Brief Intervention	Usual Care	P value
		Probability of any alcohol use (95% CI)
Any Alcohol Use (Y/N)	6 weeks postpartum	0.82 (0.74 – 0.90)	0.89 (0.83 – 0.96)	0.084
	6 months postpartum	0.88 (0.82 – 0.94)	0.93 (0.89 – 0.97)	0.087
	12 months postpartum	0.93 (0.88 – 0.98)	0.96 (0.93 – 0.99)	0.110
		Mean drinks/day (95% CI)*
Drinks Per Day	6 weeks postpartum	0.35 (0.24 – 0.47)	0.44 (0.31 – 0.59)	0.072
	6 months postpartum	0.55 (0.46 – 0.64)	0.67 (0.57 – 0.78)	0.069
	12 months postpartum	0.92 (0.63 – 1.27)	1.11 (0.78 – 1.51)	0.069

^*Antilog was used to calculate the means.