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Table 2 Multivariable logistic regression of the association of risk factors significant in bivariate comparisons with repeat cesarean birth varying by IPI

From: How birth outcomes among a cohort of Guatemalan women with a history of prior cesarean vary by mode or birth across different interpregnancy intervals

  IPI as Continuous Variable IPI as Dichotomous Variable
(< 12 vs \(\ge\) 12 months)
IPI as Dichotomous Variable
(< 18 vs \(\ge\) 18 months)
IPI as Dichotomous Variable
(< 24 vs \(\ge\) 24 months)
aOR 95% CI aOR 95% CI aOR 95% CI aOR 95% CI
Predicting Repeat Cesarean Birth
(ref: vaginal birth after cesarean)
1.0 1.0,1.0 1.5 1.1,1.9 1.5 1.2,1.8 1.3 1.1,1.7
Literacy and Schooling
(ref: illiterate)
1.3 1.1,1.6 1.3 1.1,1.6 1.3 1.1,1.6 1.3 1.1,1.6
Increase in parity of 1 birth
(continuous variable)
0.4 0.4,0.5 0.3 0.3,0.4 0.3 0.3,0.4 0.3 0.3,0.4
Increase in BMI of 1 category
(ref: underweight)
1.4 1.2,1.8 1.4 1.2,1.7 1.4 1.2,1.6 1.4 1.2,1.6
Received any antenatal care
(ref: no antenatal care)
4.2 2.5,6.9 4.2 2.5,6.9 4.0 2.4,6.6 4.1 2.5,6.7
Experienced obstructed labor
(ref: no obstructed labor)
2.1 1.1,4.3 2.1 1.1,4.4 2.1 1.1,4.4 2.1 1.1,4.4
Induction of labor
(ref: not induced)
0.1 0.1,0.2 0.2 0.1,0.3 0.2 0.1,0.3 0.1 0.1,0.3
Hypertensive disease
(ref: no hypertensive disease)
3.5 1.3,9.5 4.1 1.7,10.1 4.2 1.7,10.3 4.2 1.7,10.3
Referred in labor
(ref: not referred in labor)
1.9 1.3,2.8 1.9 1.3,2.8 1.9 1.3,2.8 1.9 1.3,2.8
  1. Note All variables included in model that were significant in bivariate comparisons (Table 1) of mode of birth: age, education, parity, body mass index, prenatal care attendance, obstructed labor, hypertensive disease, induction of labor, referred to facility from another setting. Birth attendant and location of delivery were dropped as physician providers are the only ones providing cesarean birth in the hospital with zero cells for non-physician providers and non-facility cesareans