Adjusted odds of pregnancy complications at first live delivery associated with gestational age of women
| Complication; gestational age of women | Adjusted OR* (95% CI) |
|---|---|
| Gestational diabetes | |
| < 32 wk | 2.34 (1.65–3.33) |
| 32–36 wk | 1.20 (1.03–1.40) |
| Term, 37–42 wk | 1.00 (ref) |
| Gestational hypertension | |
| < 32 wk | 1.56 (1.09–2.25) |
| 32–36 wk | 1.06 (0.92–1.22) |
| Term, 37–42 wk | 1.00 (ref) |
| Preeclampsia or eclampsia | |
| < 32 wk | 1.79 (1.19–2.69) |
| 32–36 wk | 1.23 (1.04–1.44) |
| Term, 37–42 wk | 1.00 (ref) |
| ≥ 1 complication | |
| < 32 wk | 1.95 (1.54–2.47) |
| 32–36 wk | 1.14 (1.03–1.25) |
| Term, 37–42 wk | 1.00 (ref) |
Note: CI = confidence interval, OR = odds ratio, ref = reference group.
↵* Adjusted for women’s characteristics at the time of their birth (small for gestational age, large for gestational age, multiple birth, year of birth), chronic hypertension, type 1 and 2 diabetes (except for gestational diabetes), kidney disease, age ≥ 25 years and multiple-birth pregnancy.