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 | 175(84.1) | 399(83.1) | 1 | 1 |
15–19 | 21(10.1) | 46(9.6) | 1.0 (0.60–1.79) | 1.0(0.54–1.77) |
35+ | 12(5.8) | 35(7.3) | 0.8 (0.39–1.54) | 0.9(0.43–1.98) |
Residence: | ||||
Urban | 130(62.5) | 305(63.5) | 1.0 (0.68–1.34) | 0.9(0.63–1.33) |
Rural | 78(37.5) | 175(3.5) | 1 | 1 |
Parity: | ||||
Multiparous | 53(25.4) | 140(29.2) | 1 | 1 |
Grandmultiparous | 13(6.3) | 33(6.9) | 0.8(0.56–1.19) | 0.8(0.57–1.29) |
Primiparous | 142(68.3) | 307(63.9) | 0.9(0.44–1.67) | 0.9(1.41–1.94) |
Gestational age(wks): | ||||
37–41 | 172(82.7) | 403(84.0) | 1 | 1 |
28–36 | 4(1.9) | 13(2.7) | 0.7(0.23–2.24) | 0.7(0.20–2.26) |
42+ | 32(15.4) | 64(13.3) | 1.2(0.74–1.86) | 1.0(0.65–1.70) |
Uterine contraction: | ||||
Adequate | 81(38.9) | 243(50.6) | 1 | 1 |
Inadequate | 127(61.1) | 237(49.4) | 1.6(1.15–2.24)** | 1.5(1.06–2.13)* |
Pelvic status: | ||||
Adequate | 188(90.4) | 365(76.0) | 1 | 1 |
Contracted | 9(4.3) | 46(9.6) | 0.4(0.18–0.79)** | 0.5(0.21–0.95)* |
Unknown | 11(5.3) | 69(14.4) | 0.3(0.16–0.60)† | 0.4(0.19–0.74)** |
Fetal membranes: | ||||
Intact | 55(26.4) | 112(23.3) | 1.2(0.82–1.75) | 1.3(0.84-1.97) |
PROM | 15(7.2) | 37(7.7) | 1.0(0.54–1.93) | 1.1(0.54–2.05) |
Ruptured during labor | 138(66.4) | 331(69.0) | 1 | 1 |
Fetal Position: | ||||
Occipitoanterior | 63(30.3) | 93(19.4) | 1 | 1 |
Occipito posterior | 21(10.1) | 62(12.9) | 0.5(0.28–0.90)* | 0.6(0.32–1.07) |
Occipito transverse | 50(24.0) | 98(20.4) | 0.8(0.47–1.20) | 0.8(0.51–1.34) |
Other | 74(35.6) | 227(47.3) | 0.5(0.32–0.73)** | 0.5(0.34–0.81)** |
Birth weight (gram): | ||||
2500–3999 | 177(85.1) | 406(84.6) | 1 | 1 |
<2500 | 7(3.4) | 10(2.1) | 1.6(0.60–4.28) | 1.7(0.59-4.63) |
4000+ | 23(11.0) | 55(11.4) | 0.9(0.57–1.61) | 1.0(0.55–1.66) |
Unknown | 1(0.5) | 9(1.9) | 0.3(0.03–2.03) | 0.4(0.05–3.08) |