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Table 5 Logistic regression analysis of obstructed labor at Hawassa referral hospital/Ethiopia, January 2010-December 2011

From: Predictors of labor abnormalities in university hospital: unmatched case control study

Variables Cases no (%) Controls no (%) Crude OR (95%CI) Adjusted OR 95%CI)
Maternal age (yrs):     
  20–34 59(82.0) 399(83.1) 1 1
  15–19 6(8.3) 46(9.6) 0.9 (0.36–2.16) 0.8(0.29–2.31)
  35+ 7(9.7) 35(7.3) 1.4 (0.57–3.18) 0.7(0.24–2.13)
Residence:     
  Urban 25(34.7) 305(63.5) 1 1
  Rural 47(65.3) 175(3.5) 3.3 (1.95–5.51) † 2.0(1.10–3.76)*
Parity:     
  Multiparous 23(31.9) 140(29.2) 1 1
  Grandmultiparous 9(12.5) 33(6.9) 1.3(0.73–2.19) 1.4(0.69–2.63)
  Primiparous 40(55.6) 307(63.9) 2.1(0.93–4.69) 1.8(0.65–4.98)
Gestational age(wks):     
  37–41 65(90.3) 403(84.0) 1 1
  28–36 2(2.8) 13(2.7) 0.9(0.21–4.33) 1.1(0.14–8.66)
  42+ 5(6.9) 64(13.3) 0.5(0.19–1.25) 0.6(0.21–1.61)
Antenatal are     
  Yes 47(65.3) 378(78.7) 1 1
  No 20(27.8) 58(12.1) 2.8(1.54–5.01)** 2.1(1.04–4.42)*
  Unknown 5(6.9) 44(9.2) 0.5(0.35–2.42) 1.1(0.37–3.25)
Uterine contraction:     
  Adequate 46(63.9) 243(50.6) 1 1
  Inadequate 26(36.1) 237(49.4) 0.6(0.35–0.97)* 0.7(0.39–1.28)
Pelvic status:     
  Adequate 44(61.1) 365(76.0) 1 1
  Contracted 25(34.7) 46(9.6) 4.5(2.53-8.04) † 2.8(1.47–5.41)**
  Unknown 3(4.2) 69(14.4) 0.4(0.11-1.19) 0.3(0.07–1.51)
Fetal membranes:     
  Intact 2(2.8) 112(23.3) 0.1(0.02–0.36)** 0.1(0.03–0.59)**
  PROM 2(2.8) 37(7.7) 0.1(0.02–1.02) 0.2(0.03–1.64)
  Ruptured during labor 68(94.4) 331(69.0) 1 1
Fetal Position:     
  Occipitoanterior 2(2.8) 93(19.4) 1 1
  Occipito posterior 19(26.4) 62(12.9) 14.3(3.21–63.36) 9.7(2.03–45.98)**
  Occipito transverse 16(22.2) 98(20.4) 7.6(1.70–33.92)** 5.0(1.04–23.55)*
  Other 35(48.6) 227(47.3) 7.2(1.69–30.42)** 7.6(1.70–34.27)**
Birth weight (gram):     
  2500–3999 56(77.8) 406(84.6) 1 1
  <2500 1(1.4) 10(2.1) 0.7(0.09–5.77) 1.1(0.11–10.72)
  4000+ 9(12.5) 55(11.4) 1.2(0.56–2.53) 0.8(0.32–1.83)
  Unknown 6(8.3) 9(1.9) 4.8(1.66–14.09)** 2.8(0.76–10.37)
  1. Adjusted for all the variables in this Table. * P < 0.05; ** P < 0.01, P < 0.0001.