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Table 1 Logistic regression analysis of the overall labor abnormality 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

366(85.5)

399(83.1)

1

1

  15–19

34(8.0)

46(9.6)

0.8(0.51–1.28)

0.7(0.46–1.22)

  35+

28(6.5)

35(7.3)

0.9(0.52–1.46)

0.9(0.52–1.64)

Residence:

    

  Urban

257(60.0)

305(63.5)

1.2(0.89-1.52)

1.1(0.83–1.50)

  Rural

171(40.0)

175(3.5)

1

1

Parity:

    

  Multiparous

115(26.9)

140(29.2)

1

1

  Grandmultiparous

30(7.0)

33(6.9)

0.9(0.66-1.20)

0.9(0.65–1.22)

  Primiparous

283(66.1)

307(63.9)

1.0(0.59-1.66)

0.9(0.52–1.69)

Gestational age (wks):

    

  37–41

350(81.8)

403(84.0)

1

1

  28–36

11(2.6)

13(2.7)

0.9(0.43–2.20)

1.1(0.45–2.61)

  42+

67(15.6)

64(13.3)

1.2(0.83–1.75)

1.1(0.75–1.61)

Uterine contraction:

    

  Adequate

204(47.7)

243(50.6)

1

1

  Inadequate

224(52.3)

237(49.4)

1.1(0.87–1.46)

1.1(0.86–1.49)

Pelvic status:

    

  Adequate

352(82.3)

365(76.0)

1

1

  Contracted

45(10.5)

46(9.6)

1.0(0.66–1.57)

1.0(0.66–1.63)

  Unknown

31(7.2)

69(14.4)

0.5(0.30–1.73)

0.5(0.31–0.79)**

Fetal membranes:

    

  Intact

95(22.2)

112(23.3)

0.9(0.68–1.28)

1.0(0.72–1.43)

  PROM

28(6.5)

37(7.7)

0.9(0.51–1.46)

0.9(0.54–1.54)

  Ruptured during labor

302(70.6)

331(69.0)

1

1

Fetal Position:

    

  Occipitoanterior

88(20.6)

93(19.4)

1

1

  Occipito posterior

60(14.0)

62(12.9)

1.0(0.65–1.62)

1.0(0.62–1.62)

  Occipito transverse

100(23.4)

98(20.4)

1.1(0.72–1.61)

1.0(0.69–1.58)

  Other

180(42.0)

227(47.3)

0.8(0.59–1.19)

0.9(0.60–1.26)

Birth weight (gram):

    

  2500–3999

352(82.2)

406(84.6)

1

1

  <2500

12(2.8)

10(2.1)

1.4(0.59–3.24)

1.4(0.58–3.38)

  4000+

55(12.9)

55(11.4)

1.2(0.77–1.72)

1.1(0.72–1.65)

  Unknown

9(2.1)

9(1.9)

1.2(0.45–2.94)

1.3(0.48–3.31)

  1. *Adjusted for all the variables in this Table. **P < 0.01.