Table 4

OR and 95% CIs for emergency caesarean section among primiparous women in the participating hospitals (N=8109)

Crude OR
(95% CI)
Model 1*
OR (95% CI)
Model 2†
OR (95% CI)
Model 3‡
OR (95% CI)
Hospitals
 Hospital 1RefRefRefRef
 Hospital 21.99 (1.45 to 2.72)1.90 (1.34 to 2.70)1.99 (1.44 to 2.75)1.87 (1.30 to 2.68)
 Hospital 32.40 (1.81 to 3.17)2.40 (1.73 to 3.33)2.43 (1.82 to 3.24)2.47 (1.77 to 3.46)
 Hospital 41.95 (1.42 to 2.67)2.33 (1.64 to 3.31)1.58 (1.11 to 2.25)1.84 (1.24 to 2.73)
 Hospital 52.87 (2.11 to 3.91)2.99 (2.12 to 4.22)2.49 (1.77 to 3.50)2.53 (1.74 to 3.70)
 Hospital 64.75 (3.49 to 6.46)4.28 (2.94 to 6.22)4.11 (2.87 to 5.90)3.54 (2.29 to 5.47)
Maternal age (years)1.12 (1.10 to 1.13)1.12 (1.10 to 1.14)1.12 (1.10 to 1.14)
Place of residence
 Urban/ruralRefRefRef
 Camp1.22 (1.04 to 1.44)1.32 (1.08 to 1.61)1.24 (1.01 to 1.53)
Education (years)
 ≤9RefNANA
 10 to 120.50 (0.41 to 0.62)
 ≥130.58 (0.47 to 0.72)
Body mass index (kg/m2)
 ≤24.9RefRefRef
 25 to 29.91.15 (0.91 to 1.46)1.17 (0.92 to 1.50)1.12 (0.88 to 1.44)
 ≥301.50 (1.20 to 1.89)1.41 (1.10 to 1.81)1.30 (1.01 to 1.68)
Antenatal visits (no)1.07 (1.05 to 1.10)1.04 (1.01 to 1.07)1.04 (1.01 to 1.07)
In vitro fertilisation treatment
 NoRefRefRef
 Yes5.93 (3.61 to 9.75)6.62 (3.97 to 1.05)4.64 (2.66 to 8.08)
Hypertensive disorder
 No/unknownRefRefRef
 Yes3.62 (2.75 to 4.77)3.95 (2.96 to 5.28)3.56 (2.61 to 4.86)
Induction of labour
 No/unknownRefRefRef
 Yes1.49 (1.27 to 1.75)1.33 (1.12 to 1.57)1.32 (1.10 to 1.57)
  • *Adjusted for sociodemographic characteristics (maternal age, place of residence, education and body mass index).

  • †Adjusted for obstetric characteristics (antenatal visits, in vitro fertilisation treatment, hypertensive disorder and induction of labour).

  • ‡Adjusted for sociodemographic characteristics (age, place of residence, education, body mass index) and obstetric characteristics (antenatal visits, in vitro fertilisation treatment, hypertensive disorder and induction of labour).

  • NA, not applicable due to multicollinearity.