Table 2.
Hyperemesis gravidarum and risk of pre-eclampsia
| Hyperemesis gravidarum | Pre-eclampsia | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Preterm or term | Preterm (<37 weeks) | Term (≥37 weeks) | |||||||
| No. | Rate (%) | AOR* (95% CI) | No. | Rate (%) | AOR* (95% CI) | No. | Rate (%) | AOR* (95% CI) | |
| No | 31 847 | 2.8 | Reference | 7322 | 0.6 | Reference | 24 525 | 2.1 | Reference |
| Yes | 374 | 3.0 | 1.19 (1.05–1.34) | 101 | 0.8 | 1.36 (1.09–1.70) | 273 | 2.2 | 1.13 (0.98–1.30) |
| First trimester (<12 weeks) | 294 | 2.9 | 1.17 (1.02–1.34) | 72 | 0.7 | 1.19 (0.91–1.55) | 222 | 2.2 | 1.16 (0.99–1.35) |
| Second trimester (12–21 weeks) | 80 | 3.8 | 1.26 (0.98–1.63) | 29 | 1.4 | 2.09 (1.38–3.16) | 51 | 2.4 | 1.01 (0.73–1.40) |
AOR, adjusted odds ratio; CI, confidence interval.
*
Adjustments were made for maternal age, parity, body mass index, height, smoking, cohabitation with infant's father, infant's sex, mother's country of birth and years of formal education, presence of hyperthyreosis, pregestational diabetes or chronic hypertension, and year of birth of infant.