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Table 3 Crude and adjusted effects on predictors of CS delivery following labor induction

From: Prevalence and risk factors for caesarean delivery following labor induction at a tertiary hospital in North Tanzania: a retrospective cohort study (2000–2015)

CharacteristicCrude RR (95% CI+)p-valueAdjusted RR (95% CI+)p-value
Parity
 MultiparousRef Ref 
 Primiparous1.48 (1.20–1.82)< 0.0011.46 (1.18–1.81)< 0.001
Gestational age
 TermRef Ref 
 Preterm0.45 (0.33–0.60)< 0.0010.77 (0.51–1.17)0.221
 Post term1.57 (1.19–2.07)0.0011.45 (1.09–1.93)0.009
Birthweight (kg)
 2.5–3.5Ref Ref 
 < 2.50.48 (0.36–0.63)< 0.0010.69 (0.48–1.01)0.051
 > 3.51.28 (1.03–1.60)0.0271.28 (1.02–1.61)0.030
Residence
 RuralRef Ref 
 Urban1.33 (1.09–1.63)0.0041.29 (1.05–1.58)0.015
Indications for IOL
 PROMRef Ref 
 Postdates2.96 (1.71–5.12)0.0532.00 (0.99–4.04)0.053
Methods of Induction
 OxytocinRef Ref 
 Prostaglandins0.55 (0.37–0.82)0.0030.67 (0.44–1.03)0.065
Body mass index
 NormalRef   
 Underweight0.97 (0.77–1.21)0.105  
 Overweight0.86 (0.68–1.11)0.246
 Obese0.81 (0.62–1.05)0.111  
Maternal age
 < 24Ref   
 24–350.97 (0.77–1.21)0.780
 > 350.89 (0.65–1.21)0.450  
  1. Ref Reference category, +CI Confidence Interval