Table 3.

Estimated Hazard Ratios and 95% CIs of Postoperative Mortality Relative to the Normal BMI Group

	Adjusted Hazard Ratio	95% CI	P Value
Postoperative mortality
Normal	1.00
Overweight	1.00	0.64–1.58	0.971
Obese class I	1.06	0.64–1.77	0.833
Obese class II	0.56	0.23–1.37	0.192
Obese class III	1.30	0.55–3.07	0.591

Hazard ratios for different body mass index groups were computed after adjusting for clinical covariates. BMI indicates body mass index.