Table 3.
Any Drinking in Month Prior to Pregnancy | Binge Drinking in Month Prior to Pregnancy | |||
---|---|---|---|---|
Factor | N (%) | OR (95% CI) | N (%) | OR (95% CI) |
Age (yrs) | (p < .001) | (p < .001) | ||
< 21 | 407 (34) | 0.57 (.41, .79) | 408 (18) | 0.71 (.46, 1.09) |
21–25 | 652 (47) | 1.30 (1.02, 1.65) | 648 (24) | 1.63 (1.18, 2.26) |
26–30 | 754 (39) | 1.00 reference | 740 (12) | 1.00 reference |
31–35 | 688 (49) | 1.53 (1.22, 1.92) | 680 (9) | 0.82 (.57, 1.19) |
36 + | 348 (46) | 1.31 (.99, 1.73) | 343 (6) | 0.50 (.29, .85) |
Race | (p < .001) | (p = .021) | ||
Native Am | 119 (43) | 1.01 (.67, 1.52) | 119 (27) | 1.89 (1.16, 3.08) |
Asian | 276 (26) | 0.41 (.30, .55) | 273 (9) | 0.73 (.46, 1.17) |
Black | 329 (43) | 1.27 (.97, 1.66) | 326 (19) | 1.52 (1.07, 2.17) |
Hispanic | 161 (34) | 0.75 (.52, 1.08) | 161 (14) | 1.10 (.66, 1.82) |
Other | 56 (32) | 0.56 (.30, 1.01) | 54 (13) | 1.07 (.45, 2.56) |
White | 1908 (47) | 1.00 reference | 1886 (14) | 1.00 reference |
Educ (yrs) | (p < .001) | (p = .125) | ||
< 12 | 378 (37) | 0.70 (.53, .93) | 378 (20) | 0.73 (.53, 1.03) |
12–15 | 1576 (40) | 1.00 reference | 1560 (16) | 1.00 reference |
16 + | 895 (52) | 2.00 (1.61, 2.49) | 881 (8) | 1.18 (.82, 1.71) |
Marital | (p = .378) | (p = .013) | ||
Unmarried | 1031 (44) | 1.10 (.89, 1.36) | 1024 (22) | 1.43 (1.08, 1.89) |
Married | 1818 (43) | 1.00 reference | 1795 (10) | 1.00 reference |
Parity | (p < .001) | (p < .001) | ||
1 | 1268 (50) | 1.00 reference | 1255 (18) | 1.00 reference |
2 | 907 (42) | 0.67 (.55, .81) | 897 (11) | 0.51 (.39, .68) |
3 | 403 (35) | 0.48 (.37, .62) | 399 (10) | 0.39 (.26, .58) |
4 + | 271 (31) | 0.33 (.24, .46) | 268 (12) | 0.41 (.26, .65) |
Smoking | (p < .001) | (p < .001) | ||
Nonsmoker | 2119 (37) | 1.00 reference | 2093 (7) | 1.00 reference |
Smoker | 730 (61) | 4.34 (3.51, 5.35) | 726 (34) | 6.38 (4.90, 8.30) |
In the analysis of any alcohol drinking in the month prior to pregnancy, the model with both age and education, and age and smoking interaction effects was nominally significant (p = .05) compared with the additive model. In the analyses of binge alcohol drinking in the month prior to pregnancy, the interaction effects were not statistically significant. Analyses with a “quasibinomial” model left results virtually unchanged. For simplicity we therefore report only the additive model.