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Table 4 Bivariate and multivariate analysis of 28-day mortality among neonatal admissions

From: Prevalence, risk factors and outcome of congenital anomalies among neonatal admissions in OGBOMOSO, Nigeria

Characteristic Crude HR 95% CI p value Adjusted HR 95% CI p value
Congenital anomaly
 Yes 0.89 0.39–2.02 0.770 0.54 0.13–2.23 0.393
 No (Ref)
Sex
 Male 1.22 0.83–1.80 0.308    
 Female (Ref)
Gestational age at birth (in weeks) 0.87 0.82–0.92 < 0.0001a 0.86 0.81–0.91 < 0.0001*
Age at presentation (in days) 0.93 0.88–0.99 0.015 a 1.05 0.97–1.13 0.199
Birth weight
 <1.5 kg (Ref)
 1.5–2.49 kg 1.04 0.48–2.28 0.913    
 ≥2.5 1.26 0.62–2.54 0.527    
Type of gestation
 Singleton (Ref)
 Multiple 0.54 0.26–1.10 0.090 a 0.73 0.31–1.72 0.476
Severe perinatal asphyxia
 Yes 3.97 2.66–5.93 < 0.0001a 5.41 3.05–9.62 < 0.0001*
 No (Ref)
Co-morbidity
 Yes 1.40 0.89–2.20 0.150 a 1.18 0.63–2.19 0.603
 No (Ref)
Maternal parity
 1–2 (Ref)
 3–4 0.87 0.53–1.42 0.575    
 ≥5 0.58 0.18–1.85 0.357    
Antenatal care
 Yes (Ref)
 No 0.57 0.23–1.41 0.222    
  1. *Statistically significant; treated as a continuous variable