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Table 4 Logistic regression analysis of prolonged second stage of 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

76(87.4)

399(83.1)

1

1

  15–19

5(5.7)

46(9.6)

0.6 (0.22–1.48)

0.6(0.31–1.78)

  35+

6(6.9)

35(7.3)

0.9 (0.37–2.21)

1.1(0.39–2.99)

Residence:

    

  Urban

54(62.1)

305(63.5)

0.9 (0.59–1.50)

1.1(0.64–1.82)

  Rural

33(37.9)

175(3.5)

1

1

Parity:

    

  Multiparous

28(32.2)

140(29.2)

1

1

  Grandmultiparous

5(5.7)

33(6.9)

1.1(0.69–1.87)

1.1(0.61–1.84)

  Primiparous

54(62.1)

307(63.9)

0.9(0.32–2.30)

0.8(0.25–2.42)

Gestational age(wks):

    

  37–41

71(81.6)

403(84.0)

1

1

  28-36

3(3.5)

13(2.7)

1.3(0.36–4.71)

1.8(0.41–7.56)

  42+

13(14.9)

64(13.3)

1.2(0.60–2.20)

1.2(0.61–2.42)

Uterine contraction:

    

  Adequate

57(65.5)

243(50.6)

1

1

  Inadequate

30(34.5)

237(49.4)

0.5(0.34–0.87)*

0.6(0.35–0.97)*

Pelvic status:

    

  Adequate

72(82.8)

365(76.0)

1

1

  Contracted

4(4.6)

46(9.6)

0.4(0.15–1.26)

0.4(0.14–1.20)

  Unknown

11(12.6)

69(14.4)

0.8(0.41–1.60)

1.0(0.47–2.20)

Fetal membranes:

    

  Intact

4(4.6)

112(23.3)

0.2(0.06–0.43)

0.2(0.07–0.54)**

  PROM

4(4.6)

37(7.7)

0.5(0.17–1.39)

0.5(0.17–1.53)

  Ruptured during labor

79(90.8)

331(69.0)

1

1

Fetal Position:

    

  Occipitoanterior

18(20.7)

93(19.4)

1

1

  Occipito posterior

17(19.5)

62(12.9)

1.4(0.68–2.96)

1.1(0.51–2.48)

  Occipito transverse

26(29.9)

98(20.4)

1.4(0.71–2.66)

1.3(0.63–2.57)

  Other

26(29.9)

227(47.3)

0.6(0.31–1.13)

0.7(0.34–1.34)

Birth weight (gram):

    

  2500–3999

69(79.3)

406(84.6)

1

1

  <2500

2(2.3)

10(2.1)

1.2(0.25–5.49)

1.1(0.19–6.08)

  4000+

15(17.3)

55(11.4)

1.6(0.85–2.99)

1.6(0.80–3.12)

  Unknown

1(1.1)

9(1.9)

0.7(0.08–5.24)

0.6(0.07–5.27)

  1. Adjusted for all the variables in this Table. * P < 0.05; ** P < 0.01, P < 0.0001.