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Table 5 Adjusted* population attributable fractions (PAFs) of caesarean births associated with overweight or obese prepregnancy body mass index (BMI) or above recommended gestational weight gain (GWG)

From: Contribution of prepregnancy body mass index and gestational weight gain to caesarean birth in Canada

 

PAF (%, 95% confidence interval)

 

All women

Nulliparous

Parous, no prior caesarean

Parous, prior caesarean

Overweight or obese (BMI ≥ 25)

10.1 (9.9, 10.2)

11.1 (10.9, 11.2)

10.9 (10.4, 11.4)

3.3 (3.2, 3.5)

GWG > recommended

10.9 (10.7, 11.1)

10.7 (10.5, 10.9)

23.6 (23.0, 24.2)

0.3 (0.1, 0.4)

Overweight or obese (BMI ≥ 25) or GWG > recommended

20.2 (20.0, 20.4)

21.1 (20.9, 21.3)

31.8 (31.3, 32.4)

3.6 (2.4, 3.8)

  1. *All women: BMI models adjusted for GWG and GWG models adjusted for BMI; also adjusted for maternal age, parity, weight-for-gestational age, prepregnancy health problems, antenatal care provider, low-income-cut-off, educational attainment, province of residence, ethnicity, support, stress and history of depression. Parity/previous caesarean subgroups: adjusted for all previous covariates except parity.