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Table 3 Multivariable regression of the predictors of preterm and post term births delivered in Tigray, Northern Ethiopia, April-July 2014

From: Pre-term and post-term births: predictors and implications on neonatal mortality in Northern Ethiopia

  Model 1: Model 2: Model 3:
Immediate Factors Proximal Factors Distal Factors
Predictors RRR& CI preterm RRR & CI post term RRR& CI preterm RRR& CI post term RRR & CI preterm RRR & CI post term
Body mass index
 Normal (ref)    ref ref ref ref
 Underweight    0.59,0.29–1.2 1.7,0.59–4.82 0.47,0.2–0.99 2.18,0.6–7.2
 Overweight    0.57,0.1–1.69 3.34,1.1–11.2 0.5,0.15–1.63 3.88,1.01–15.05
Weight for age
 Normal    ref ref ref ref
 SGA    1.03,0.51–2.0 1.66,0.71–3.9 1.02,0.48–2.1 1.56,0.6–3.9
 LGA    2.48,1.37–4.4 1.47,0.77–2.8 1.87,0.95–3.6 1.57,0.8–3.0
Multi Birth (“sin”ref)    2.74,1.44–5.2 0.65,0.2–2.31 2.86,1.4–5.65 0.75,0.2–2.7
Female (“male” ref)    1.09,0.67–1.7 1.2,0.76–2.09 1.1,0.65–1.84 1.3,0.77–2.2
Complication (“yes”ref) 0.5,0.34–0.9 1.34,0.7–2.1 0.69,0.4–1.17 1.33,0.66–2.7 0.85,0.47–1.5 1.34,0.6–2.8
Length of neonate
  < 46 cm    ref ref ref ref
 46–56 cm    0.15,0.09–0.2 2.57,0.76–8.6 0.12,0.07–0.2 2.3,0.69–3.0
  > 56 cm    0.05,0.01–0.4 3.68,0.8–15.8 0.05,0.01–0.4 2.6,0.47–14.3
Monthly Income
 Poor      ref ref
 Medium      0.26,0.12–0.5 1.2,0.55–2.6
 Rich      0.6,0.34–1.06 2.17,1.1–4.3
Marital status
 Married      ref ref
 Others      1.62, 0.6–4.2 2.4,1.02–5.8
  1. *BF breast feeding, ref reference, sin single birth