Table 3.
Multinomial logistic regression analysis of maternal outcomes using the four-category inter-delivery interval
| Outcome | Inter-delivery interval (completed month) | |||
|---|---|---|---|---|
| Less than 24 | 24–59 | 60–119 | 120 or more | |
| Maternal | ||||
| Infection morbidity | – | Ref | 1.3 (0.4–4.2) | 1.8 (1.4–7.9)* |
| Postpartum hemorrhage | 19.6 (4.4–90.9)* | Ref | 2.2 (0.6–8.1) | 4.0 (0.9–18.9) |
| Transfusion | – | Ref | 2.2 (0.5–10.9) | 7.4 (1.4–40.0)* |
| Neonatal | ||||
| PB (< 37 weeks) | 5.5 (1.5–21.3)* | Ref | 0.8 (0.4–1.6) | 1.1 (0.4–2.8) |
| LBW | 3.5 (1.2–10.3)* | Ref | 0.9 (0.4–1.8) | 1.4 (0.5–3.6) |
| Neonatal unit admission | 0.7 (0.2–2.4) | Ref | 1.2 (0.7–2.1) | 2.6 (1.4–5.0)* |
Data are expressed as adjusted odds ratios and 95% confidence intervals
Infection morbidity: Defined as fever, infection, endometritis, and chorioamnionitis
Multivariable models included the following covariates: Maternal nationality, prior cesarean number (one compared with two), gestational age, maternal age, maternal BMI at delivery, parity, GDM and preeclampsia
*Significant findings (P < 0.05)