. Author manuscript; available in PMC: 2018 May 16.

Published in final edited form as: Obesity (Silver Spring). 2017 Nov 16;26(1):185–192. doi: 10.1002/oby.22048

Table 3.

Cesarean delivery according to prepregnancy body mass index (BMI): Proyecto Buena Salud, 2006–2011.

	Total Sample	Cases		Unadjusted		Adjusted for age		Adjusted for age and total GWG
	Total Sample	n	%	OR	95% CI	OR	95% CI	OR	95% CI
Prepregnancy (BMI [kg/m²], continuous)	1210	277	22.9	1.06	1.04–1.08	1.06	1.04–1.08	1.07	1.05–1.09
Prepregnancy (categories)
Underweight (BMI <18.5 kg/m²)	71	9	12.7	0.65	0.31–1.34	0.67	0.32–1.40	0.76	0.35–1.67
Normal weight (BMI 18.5 to <25.0 kg/m²)	555	102	18.4	1.00	referent	1.00	referent	1.00	referent
Overweight (BMI 25.0 to <30.0 kg/m²)	283	63	22.3	1.27	0.89–1.81	1.13	0.79–1.62	1.22	0.85–1.77
Obese (BMI 30.0+ kg/m²)	301	103	34.2	2.31	1.68–3.18	2.03	1.46–2.82	2.46	1.72–3.51