Table 2.

Maternal Alcohol Consumption by Alcohol Group

	Low/Unexposed^a N = 179	Alcohol- Exposed^a N = 180	P-Value^b
Ounces absolute alcohol per day at time of conception (ounces/day)
Mean ± SE	0.002 ± 0.016	0.574 ± 0.422	<0.001
Minimum	0	0
Maximum	0.145	2.94
Ounces absolute alcohol per drinking day at time of conception (ounces/drinking day)
Mean ± SE	0.014 ± 0.112	1.607 ± 1.146	<0.001
Minimum	0	0
Maximum	1.014	6.767
Ounces absolute alcohol per day at time of enrollment (ounces/day)
Mean ± SE	0.00003 ± 0.00044	0.138 ± 0.792	<0.001
Minimum	0	0
Maximum	0.006	10.328
Ounces absolute alcohol per drinking day at time of enrollment (ounces/drinking day)
Mean ± SE	0.0005 ± 0.0061	0.475 ± 1.07	<0.001
Minimum	0	0
Maximum	0.081	12.05

Missing values: 3 in the low/unexposed group and 1 in the exposed group for age, gravidity, parity, education, vitamin use, weeks of gestation; 3 in the low/unexposed group and 2 in the exposed group for socioeconomic status, absolute alcohol per day at time of enrollment, absolute alcohol per drinking day at time of enrollment; 4 in the low/unexposed group and 1 in the exposed group for absolute alcohol per day at time of conception; 4 in the low/unexposed group and 2 in the exposed group for body mass inex, TWEAK; 5 in the low/unexposed group and 1 in the exposed group for smoking, absolute alcohol per drinking day at time of conception.

t Test.