Table 1.
Characteristic | Pregnancies n = 1,933 |
Gestational hypertension n = 6474 |
Preeclampsia n = 315 |
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---|---|---|---|---|---|---|---|---|
No. | % | ORc | 95% C.I. | % | ORc | 95% C.I. | ||
Age (year) | <=19 | 515 | 24.3 | 1.0 | . | 13.4 | 1.0 | . |
20–29 | 1082 | 22.7 | 1.1 | 0.7 – 1.6 | 6.7 | 0.8 | 0.4 – 1.5 | |
>=30 | 336 | 36.4 | 1.8 | 1.1 – 3.1 | 11.0 | 1.0 | 0.4 – 2.4 | |
Race | White | 849 | 23.5 | 1.0 | . | 7.7 | 1.0 | . |
Black | 974 | 26.2 | 1.1 | 0.7 – 2.0 | 10.1 | 1.6 | 0.7 – 3.7 | |
Other | 110 | 32.9 | 1.3 | 0.6 – 2.8 | 11.8 | 1.5 | 0.5 – 4.7 | |
Previous pregnancies | None | 664 | 28.6 | 1.0 | . | 15.2 | 1.0 | . |
One or more | 1269 | 23.8 | 0.6 | 0.4 – 0.9 | 6.3 | 0.3 | 0.2 – 0.6 | |
Prepregnancy body mass index (kg/m2) | < 25 | 1543 | 22.8 | 1.0 6 | . | 8.1 | 1.0 | . |
>=25 | 390 | 36.7 | 1.4 | 1.0 – 2.0 | 13.9 | 2.3 | 1.3 – 4.1 | |
Socioeconomic indexa | <=5 | 1197 | 26.1 | 1.0 | . | 10.3 | 1.0 | . |
> 5 | 736 | 24.1 | 1.0 | 0.7 – 1.5 | 7.3 | 0.7 | 0.4 –00201.5 | |
Smoking status | Nonsmoker | 770 | 26.7 | 1.0 | . | 9.4 | 1.0 | . |
Past smoker | 294 | 22.7 | 0.9 | 0.6 – 1.5 | 8.0 | 0.9 | 0.4 – 2.0 | |
Current smoker, <10/day | 370 | 23.5 | 0.9 | 0.6 – 1.3 | 10.1 | 1.1 | 0.6 – 2.2 | |
Current smoker, 10–19/day | 244 | 30.5 | 1.4 | 0.9 – 2.2 | 7.3 | 1.0 | 0.4 – 2.8 | |
Current smoker, >=20/day | 255 | 22.3 | 0.8 | 0.5 – 1.3 | 9.8 | 1.2 | 0.6 – 2.5 | |
Interpregnancy interval (year)b | < 2 | 913 | 23.6 | 1.0 | . | 5.2 | 1.0 | . |
>=2 | 356 | 24.3 | 0.9 | 0.5 – 1.4 | 9.0 | 1.0 | 0.4 – 2.1 |
Approximately equal to percentile rank among contemporaneous U.S. households, divided by 10.
Most recent pregnancy, parous only (n = 1322, 87).
Adjusted for all covariates shown in table, study center and survey weight.