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Table 3 Variables associated with neonatal death adjusted by year of birth, maternal age, marital status, multiple gestation, mode of delivery 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
Maternal schooling
 ≥ 12 years reference  
 < 7 years 1.20 1.13–1.26
 8–11 years 1.11 1.06–1.16
Parity
 ≥ 2 reference  
 Primiparity 0.96 0.92–0.99
Prenatal care
 ≥ 7 visits reference  
 0 visits 1.45 1.31–1.61
 1–3 visits 1.43 1.35–1.54
 4–6 visits 1.36 1.31–1.41
Neonatal sex
 Female reference  
 Male 1.09 1.05–1.13
1st minute Apgar
 7–10 reference  
 0–2 20.14 18.85–21.51
 3–6 6.38 6.17–6.60
Congenital malformation
 Absent reference  
 Present 15.10 14.28–15.98