Table 3.

Univariate and multivariate Cox proportional hazard models for cTNI as a predictor of mortality

Log cTNI per SD	HR (95% CI)	P value
Univariable	2.75 (2.30–3.29)	<0.01
Adjusted for Model 1	2.57 (2.10–3.13)	<0.01
Adjusted for Model 2	2.29 (1.81–2.89)	<0.01
Adjusted for Model 3	1.65 (1.17–2.34)	<0.01

CI, confidence interval; cTNI, cardiac troponin I; HR, hazard ratio; SD, standard deviation; SpO₂, oxygen saturation.

Model 1: adjusted for age and sex. Model 2: adjusted for age, sex, respiratory failure, liver damage, kidney injury, coagulopathy, and septic shock. Model 3: adjusted for age, sex, log alanine transaminase, log creatinine, log prothrombin time, and SpO₂.