Table 2.

Multivariable Logistic Regression of Alcohol Use 3 months Before Pregnancy on Odds of Using a Multivitamin Supplement 1 month Before Pregnancy, PRAMS, 2004 to 2008

	Multivitamin use
Exposure variable	OR	95% CI
Drink 3 months before pregnancya
Never	1.00	–
≤ 3 drinks/wk	0.76	0.72, 0.80
4 to 6 drinks/wk	0.60	0.56, 0.66
7 to 13 drinks/wk	0.49	0.44, 0.55
≥ 14 drinks/wk	0.39	0.32, 0.47
p-for-trend	<0.001
Binge drink (5 or more drinks/sitting) 3 months before pregnancyb
Never drink or binge	1.00	–
1 time	0.76	0.71, 0.81
2 to 3 times	0.66	0.62, 0.70
4 to 5 times	0.56	0.50, 0.64
≥ 6 times	0.50	0.44, 0.56
p-for-trend	<0.001

PRAMS, Pregnancy Risk Assessment and Monitoring System.

Adjusted for maternal education, maternal ethnicity, household income, maternal age, and parity.

^an = 111,644.

^bn = 111,210.