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Table 2 Association of selected Maternal and Neonatal characteristics with preterm and post term births on neonates delivered in Tigray, northern Ethiopia, April-July, 2014

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

Characteristics Total live births   Preterm birth Post term birth Preterm & post term  
No % No (RRR, CI) No (RRR,CI) P-value
Current age of mother  
 <20 year 95 8.2 10 (ref) 6 (ref) ref  
 20–24 year 328 28.5 24 (0.67, 0.30–1.46) 22 (1.02, 0.4–2.6) 0.672,0.95  
 25–35 year 590 57.2 45 (0.68, 0.33–1.42) 29 (0.73, 0.29–1.83) 0.68, 0.51  
  ≥ 35 year 139 12.1 14 (0.97, 0.41–2.31) 12 (1.39, 0.50–3.88) 0.97, 0.52  
Birth interval  
 Not applicable 537 46.6 40 (ref) 34 (ref)   
 <Two years 127 11.0 10 (1.08, 0.52–2.32) 10 (1.27, 0.60–2.65) 0.83, 0.52  
 >Two years 488 42.4 43 (1.18, 0.75–1.85) 25 (0.81,6.47–1.38) 0.44,0.44  
Ever use of FP  
 Yes 650 56.4 48 (ref) 38 (ref)   
 No 502 43.6 45 (1.24, 0.82–1.89) 31 (1.08,0.66–1.76) 0.32,0.75  
Disease  
 Yes 100 8.7 7 (ref) 5 (ref)   
 No 1052 91.3 86 (1.19, 0.53–2.66) 64 (1.24,0.48–3.18) 0,66,0.642  
Maternal complications  
 Yes 221 19.2 27 10   
 No 930 80.8 66 (0.55, 0.34–0.9) 59 (1.34,0.67–2.68) 0.016,0.395  
Mode of delivery  
 Vaginal 846 73.5 75 46   
 Caesarean section 241 20.9 13 (0.59, 0.32–1.08) 16 (1.18, 0.65–2.14) 0.01,0.56  
 Instrumental 65 5.6 5 (0.91, 0.35–2.35) 7 (2.08, 0.89–4.83) 0.81,0.08  
Sex  
 Male 610 52.9 50 (ref) 43 (ref) ref  
 Female 542 47.1 43 (0.55, 0.34–0.89) 35 (1.34, 0.67–2.68) 0.016, 0.39  
Neonatal length  
 <46 cm 151 13.4 46 (ref) 3 (ref)   
 46–56 cm 914 81.2 45 (0.13, 0.08–0.20) 60 (2.66, 0.82–8.66) <0.001,0.10  
 >56 cm 61 5.4 2 (0.04, 0.05–0.32) 6 (4, 0.96–16.6) 0.002,0.06  
Birth weight  
 <2500 gm 121 10.5 50 (111, 15–82) 1 (0.12, 0.016–0.94) <0.001,004  
 2500–3500 gm 853 74.2 42 (8.6, 1.17–63) 50 (0.05–1.00) 0.034,0.05  
 >3500 gm 175 15.3 1 (ref) 18 (ref) ref  
Weight for gestational age  
 Appropriate 846 73.5 52 (ref) 47 (ref)   
 SGA 125 10.9 17 (2.44, 1.35–4.38) 8 (1.27, 0.58–2.76) 0.003,0.54  
 LGA 180 15.6 24 (2.42, 1.44–4.06) 14 (0.15, 0.8–3.0) 0.004,0.26 <0.01,0.158
Birth type  
 Single 1057 91.8 70 (ref) 66 (ref) ref  
 Multiple 95 8.2 23 (4.38, 2.57–7.45) 3 (0.60, 0.185–1.97) <0.001,0.40  
Body mass index  
 Underweight 119 10.6 13 (ref) 4 (ref) ref  
 Normal 907 80.8 72 (0.72, 0.38–1.34) 52 (1.69, 0.59–4.78) 0.30,0.32  
 overweight 96 8.6 6 (0.59, 0.21–1.61) 11 (3.55, 1.08–11.5) 0.31,0.04  
Hypothermic  
 Yes 61 5.3 23 (ref) 6 (ref) ref  
 No 1091 94.7 70 (0.1, 0.05–0.18) 63 (0.35, 0.14–0.86) <0.001, 0.02