Table 2.

Risk factors for 90-day mortality of patients with sepsis or septic shock by Cox regression analysis

Variables	HR (95% CI)	P values
Body mass index (kg/m2)	0.940 (0.889 to 0.994)	0.029
Hypotension	0.781 (0.229 to 2.670)	0.694
Lactate level (mmol/L)	1.018 (0.943 to 1.098)	0.648
Oliguria	1.288 (0.715 to 2.321)	0.399
Pao2/Fio2 (mm Hg)	1.000 (0.997 to 1.002)	0.933
Septic shock	1.075 (0.320 to 3.615)	0.907
SOFA score	1.229 (1.123 to 1.345)	<0.001
APACHE II score	1.050 (1.022 to 1.080)	<0.001
Intubated	1.511 (0.931 to 2.452)	0.095

APACHE, Acute Physiology and Chronic Health Evaluation; SOFA, Sequential Organ Failure Assessment.

The variables significantly associated with 90-day non-survival in the univariate analysis were used in the Cox proportional hazard regression analysis.