Obesity Paradox of All-Cause Mortality in 4,133 Patients Treated with Coronary Revascularization

Table 2

Cox regression analyses of the relationship between BMI and all-cause mortality for patients after CABG.

Univariate				Model I			Model II
BMI	HR (95%CI)		value	HR (95%CI)		value	HR (95%CI)		value
Normal	Reference			Reference			Reference
Underweight	2.8003	1.560–5.028	<0.001	3.38	1.872–6.103	<0.001	2.576	1.424–4.660	0.002
Overweight	0.7787	0.646–0.939	0.009	0.875	0.724–1.057	0.166	0.825	0.682–0.998	0.048
Obesity	0.8758	0.731–1.050	0.151	1.09	0.904–1.314	0.366	0.908	0.751–1.097	0.318
for trend			0.178			0.275			0.294

Model I: adjust with age, sex, race, and marital status. Model II: adjust with age, marital status, length of stay, ECI, urine output, pH, potassium, PT, and RDW.