TABLE 4.
The early onset and late onset of gestational hypertension and pre‐eclampsia with risk of low birthweight (LBW) and small‐for‐gestational‐age (SGA)
| Different onset times | LBW | SGA | |||||
|---|---|---|---|---|---|---|---|
| No. | Incidence (%) | Crude OR (95% CI) | Adjusted OR (95% CI) a | Incidence (%) | Crude OR (95% CI) | Adjusted OR (95% CI) a | |
| Gestational hypertension | |||||||
| No b | 182 217 | 2.11 | 1 | 1 | 5.68 | 1 | 1 |
| Early‐onset | 833 | 5.28 | 2.58 (1.90–3.50) | 2.71 (1.99–3.68) | 8.16 | 1.48 (1.15–1.89) | 1.54 (1.20–1.98) |
| Late‐onset | 18 434 | 3.50 | 1.68 (1.54–1.83) | 1.73 (1.59–1.88) | 7.55 | 1.36 (1.28–1.44) | 1.39 (1.31–1.47) |
| Pre‐eclampsia | |||||||
| No b | 196 583 | 2.16 | 1 | 1 | 5.74 | 1 | 1 |
| Early‐onset | 89 | 17.98 | 9.93 (5.78–17.07) | 10.55 (6.12–18.20) | 16.85 | 3.33 (1.91–5.80) | 3.54 (2.02–6.19) |
| Late‐onset | 4812 | 5.80 | 2.79 (2.46–3.16) | 2.89 (2.55–3.28) | 10.56 | 1.94 (1.77–2.13) | 1.99 (1.81–2.19) |
Abbreviations: CI, confidence interval; OR, odds ratio.
a
Adjusted for maternal age (continuous), BMI (continuous), education, occupation, parity, ethnicity, folic acid use, and anemia during pregnancy.
b
Reference group.