Table 4.

Multivariable Cox regression analysis for 1-year mortality.

1-year mortality (ref, Normal (18.5 to < 25))	Non-adjusted Hazard ratio (95% CI)P value	Adjust I Hazard ratio (95% CI)P value	Adjust II Hazard ratio (95% CI)P value
Underweight (<18.5)	1.87 (1.39-2.53) <0.001	1.85 (1.37-2.50) <0.001	1.81 (1.34-2.46) <0.001
Overweight (25 to < 30)	0.73 (0.63-0.85) <0.001	0.81 (0.70-0.94) 0.004	0.78 (0.67-0.91) 0.001
Obesity (≥30)	0.59 (0.50-0.69) <0.001	0.73 (0.62-0.87) <0.001	0.70 (0.59-0.83) <0.001

Adjusted I for gender, age, race and marital status;

Adjusted II for gender, age, race, marital status, admission type, congestive heart failure, cardiac arrhythmias, valvular disease, hypertension, diabetes, chronic pulmonary disease, renal failure, liver disease, metastatic cancer, SAPS, SOFA, renal replacement therapy, mechanical ventilation and vasopressor.