Table 4 Obstetric outcome between rubella seronegative (n = 6957) versus seropositive (n = 57,937) multiparous gravidae.
From: Parity status and the relationship between antenatal rubella serology with obstetric outcome
Rubella status | p | RR (95% CI) | ||
|---|---|---|---|---|
Seronegative | Seropositive | |||
Medical history (%) | 10.4 | 12.5 | < 0.001 | 0.830 (0.772–0.892) |
Abortion history (%) | 57.1 | 50.8 | < 0.001 | 1.124 (1.100–1.149) |
Obstetric complications (%) | 22.6 | 22.1 | 0.480 | 1.025 (0.958–1.097) |
Gestational hypertension | 0.9 | 1.0 | 0.273 | 0.865 (0.667–1.122) |
Pre-eclampsia | 1.4 | 1.0 | 0.003 | 1.388 (1.117–1.724) |
Gestational diabetes | 10.5 | 9.7 | 0.034 | 1.082 (1.006–1.164) |
Placental abruption | 1.1 | 1.0 | 0.498 | 1.087 (0.854–1.383) |
Placenta praevia | 1.1 | 1.1 | 0.684 | 1.049 (0.838–1.322) |
Preterm birth < 37 weeks | 6.7 | 6.2 | 0.121 | 1.077 (0.981–1.183) |
Post-dated pregnancy | 1.5 | 1.0 | < 0.001 | 1.465 (1.188–1.805) |
Labour induction | 17.1 | 16.8 | 0.483 | 1.020 (0.965–1.077) |
Instrumental vaginal delivery | 5.1 | 5.2 | 0.694 | 0.974 (0.852–1.113) |
Caesarean section | 23.1 | 22.1 | < 0.001 | 1.096 (1.047–1.147) |
Manual removal of placenta | 3.4 | 3.4 | 0.702 | 1.026 (0.899–1.171) |
Postpartum haemorrhage | 3.1 | 3.2 | 0.586 | 0.962 (0.838–1.109) |
Infant ≥ 4000 g | 4.6 | 3.8 | 0.001 | 1.209 (1.079–1.355) |
Infant < 2500 g | 5.6 | 5.4 | 0.513 | 1.035 (0.934–1.146) |
Male infant | 53.7 | 52.4 | 0.039 | 1.025 (1.002–1.049) |
Apgar score < 7 at 5th min | 0.6 | 0.4 | 0.021 | 1.472 (1.057–2.050) |
Perinatal mortality | 0.5 | 0.3 | < 0.001 | 1.851 (1.303–2.628) |
Stillbirth | 0.3 | 0.2 | 0.010 | 1.769 (1.139–2.746) |
Neonatal death | 0.2 | 0.1 | 0.017 | 2.010 (1.122–3.601) |
