Table 6.
Maternal predictors of hypertension during pregnancy.
| Comparison | Odds ratio (95% CI) | P |
|---|---|---|
| Smoked before pregnancy only/never smoked | 1.205 (1.022–1.420) | 0.0260 |
| Smoked before and during pregnancy/never smoked | 1.028 (0.866–1.220) | 0.7558 |
| Age | 0.999 (0.987–1.011) | 0.8272 |
| First live birth/previous live birth | 0.657 (0.586–0.736) | <0.0001 |
| Not married/married | 0.976 (0.840–1.133) | 0.7458 |
| Education ≤ 12 yrs/> 12 yrs | 0.976 (0.855–1.113) | 0.7140 |
| Prepregnancy BMI | 1.046 (1.037–1.055) | <0.0001 |
| Annual HH income ≤ $20 k/> $20 k | 1.018 (0.872–1.189) | 0.8223 |
| Urban or suburban/rural town or isolated rural | 0.989 (0.888–1.102) | 0.8456 |
| Nonwhite/white | 0.943 (0.673–1.320) | 0.7307 |
| Drank alcohol prior to pregnancy/did not drink alcohol | 1.010 (0.898–1.135) | 0.8742 |
| Drank alcohol in last 3 months of pregnancy/did not drink | 1.060 (0.849–1.323) | 0.6070 |
| Gestational age when being sure she is pregnant | 0.993 (0.974–1.012) | 0.4463 |
| Gestational age at first prenatal visit | 1.012 (0.995–1.029) | 0.1582 |
| Pregnancy weight gain < recommended/recommended | 0.925 (0.792–1.081) | 0.3293 |
| Pregnancy weight gain > recommended/recommended | 1.359 (1.205–1.534) | <0.0001 |
Logistic regression results with maternal hypertension as the dependent variable: mothers were more likely to be hypertensive during pregnancy if they smoke before pregnancy, had a higher prepregnancy BMI, or had a gestational weight gain > recommended as compared to within the recommended range. Mothers were less likely to be hypertensive if they were having their first live birth.