Table 3.

Multivariable Cox analysis

Variable	Total	Event%	Non-adjusted		Adjust I		Adjust II
			HR 95% CI	P value	HR 95% CI	P value	HR 95% CI	P value
BMI	3145	1334 (42.4)	0.99 (0.98 to 0.99)	<0.001	0.99 (0.99 to 1)	0.148	1 (0.99 to 1.01)	0.772
Normal weight	1000	469 (46.9)	1(Ref)		1(Ref)		1(Ref)
Overweight	976	411 (42.1)	0.88 (0.77 to 1)	0.058	0.89 (0.78 to 1.02)	0.09	0.94 (0.82 to 1.07)	0.328
Obesity	1169	454 (38.8)	0.79 (0.69 to 0.9)	<0.001	0.83 (0.72 to 0.94)	0.004	0.93 (0.81 to 1.06)	0.28
Trend test	3145	1334 (42.4)	0.89 (0.83 to 0.95)	<0.001	0.91 (0.85 to 0.97)	0.004	0.96 (0.9 to 1.03)	0.275

Adjusted I for age, gender and SOFA.

Adjusted II for age, gender, SAPS, SOFA, elixscore, diabetes, hypertension, coronary artery disease, congestive heart failure, atrial fibrillation, malignancy cancer, stroke, chronic obstructive pulmonary disease, renal disease, liver disease, MAP, creatinine, haemoglobin.

BMI, body mass index; MAP, minimum arterial pressure; SAPS, Simplified Acute Physiology Score; SOFA, Sequential Organ Failure Assessment.