Table 2 Comparison of preeclampsia cases, non-cases and controls: demographic, medical and obstetric characteristics ascertained at 24-26 week study visit
Characteristic | Cases (n = 113) | Non-cases* (n = 5107) | Controls (n = 443) |
|---|---|---|---|
Age category | |||
< 20 years | 3% | 3% | 3% |
20-34 years | 78% | 79% | 79% |
> 34 years | 19% | 18% | 18% |
Hospital recruited | |||
Hôpital St. Luc | 15% | 22% | 24% |
Hôpital Maisonneuve Rosemont | 39% | 36% | 37% |
Royal Victoria Hospital | 22% | 18% | 17% |
Jewish General Hospital | 24% | 24% | 22% |
Body Mass Index before pregnancy, kg/m2 | |||
< 18.5 | 2% | 8% | 9% |
18.5 to < 25 | 52% | 63% | 60% |
25 to < 30 | 27% | 18% | 18% |
≥ 30 | 19% | 11% | 13% |
Primigravida | 40% | 35% | 34% |
Use of prenatal vitamins | 92% | 92% | 92% |
Diabetes before pregnancy or prior to 24 weeks gestation | 6% | 2% | 1% |
High blood pressure before pregnancy | 8% | 4% | 3% |
Previous preeclampsia or eclampsia (among women with prior pregnancy lasting > 20 wks) | 21% | 3% | 3% |
Smoke currently | 10% | 16% | 16% |