Skip to main content

Table 4 Variables associated with neonatal death: interaction of mode of delivery mode and gestational age. São Paulo State, Brazil, 2004–2013

From: Annual trend of neonatal mortality and its underlying causes: population-based study – São Paulo State, Brazil, 2004–2013

  Incidence Rate Ratio 95 % Confidence Interval
Mode of delivery
C-section vs. vaginal
 22–27 weeks 0.63 0.58–0.70
 28–31 weeks 0.89 0.82–0.96
 32–36 weeks 1.11 1.05–1.17
 37–41 weeks 1.35 1.30–1.40
 ≥ 42 weeks 1.20 0.85–1.69
Any GA vs. GA 37–41 weeks
22–27 vs. 37–41 weeks
- Vaginal delivery 101.41 94.51–108.83
- Cesarean section 64.34 59.31–69.81
28–31 vs. 37–41 weeks
- Vaginal delivery 28.02 26.08–30.12
- Cesarean section 24.87 23.35–26.49
32–36 vs. 37–41 weeks
- Vaginal delivery 5.43 5.15–5.73
- Cesarean section 6.02 5.73–6.31
≥ 42 vs. 37–41 weeks
- Vaginal delivery 1.34 1.04–1.74
- Cesarean section 1.61 1.28–2.03
  1. Adjusted for year of birth, maternal age, marital status, years of study, multiple gestation, parity, prenatal care, neonatal sex, 1st minute Apgar score and congenital malformations