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
Characteristics | Total live births | Â | Preterm birth | Post term birth | Preterm & post term | Â |
|---|---|---|---|---|---|---|
No | % | No (RRR, CI) | No (RRR,CI) | P-value | ||
Current age of mother | Â | |||||
 <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 | Â | |||||
 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 | Â | |||||
 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 | Â | |||||
 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 | Â | |||||
 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 | Â | |||||
 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 | Â | |||||
 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 | Â | |||||
 <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 | Â | |||||
 <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 | Â | |||||
 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 | Â | |||||
 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 | Â | |||||
 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 | Â | |||||
 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 |  |