Table 4.
Any Alcohol Consumption during Pregnancy and Hazard Ratio (HR) for Miscarriage Stratified by Timing of Multivitamin Exposure
| Multivitamin Non-user (n=331) | |||||
|---|---|---|---|---|---|
| Miscarriage n=74 n (%) | HRcrude | 95%CI | HR1 | 95%CI | |
| Any alcohol intake (n= 114) | 33 (29) | 1.84 | 1.16, 2.91 | 1.67 | 1.04, 2.69 |
| No alcohol intake (n=217) | 41 (19) | 1.00 | 1.00 | ||
| Prenatal Multivitamin User2 (n= 475) | |||||
|---|---|---|---|---|---|
| Miscarriage n=53 n (%) | HRcrude | 95% CI | HR1 | 95% CI | |
| Any alcohol intake (n=196) | 27 (14) | 1.51 | 0.89, 2.60 | 1.47 | 0.85, 2.55 |
| No alcohol intake (n=279) | 26 (9) | 1.00 | 1.00 | ||
| Periconceptional Multivitamin User2 (n=252) | |||||
|---|---|---|---|---|---|
| Miscarriage n=45 n (%) | HRcrude | 95%CI | HR1 | 95% CI | |
| Any alcohol intake (n=125) | 17 (14) | 0.64 | 0.35, 1.17 | 0.57 | 0.30, 1.10 |
| No alcohol intake (n=127) | 28 (22) | 1.00 | 1.00 | ||
1
adjusting for maternal age, caffeine, unintended pregnancy and marital status
2
Three women did not report when they began taking multivitamins and were not included in this analysis