Table 3.

Bivariate and multivariate Cox-proportional hazard regression on predictors of mortality for preterm neonates.

Variables	CHR (95% CI)	AHR (95% CI)	P-value
Fetal presentation
Vertex	1	1
Breech	0.66 (0.38–1.13)	0.9 (0.51–1.61)	0.74
Footling	5.75e−16 (0–0.0)	1.91e−16 (0–0.0)	1
Compound	2.2 (1.28–3.77)	2.29 (1.23–4.24)	0.009*
Gestational age (weeks)	0.72 (0.68–0.76)	0.87 (0.79–0.95)	0.003*
1st minute APGAR score	0.62 (0.54–0.70)	0.78 (0.62–0.98)	0.04*
5th minute APGAR score	0.60 (0.54–0.67)	0.95 (0.79–1.15)	0.64
Birth weight (kg)	0.09 (0.06–0.14)	0.32 (0.17–0.58)	< 0.001*
Respiratory distress syndrome
Yes	5.69 (3.77–8.59)	3.01 (1.80–5.01)	< 0.001*
No	1	1
Perinatal asphyxia
Yes	3.06 (2.05–4.55)	2.83 (1.75–4.58)	< 0.001*
No	1	1

CHR crude hazard ratio, AHR adjusted hazard ratio.

*Statistical significance of variables at P < 0.05.