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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