Continuous variables are presented as medians (interquartile ranges). Categorical variables are presented as frequencies (%). SAPS, simplified acute physiology score; PDR, predicted death rate; SOFA,
* We calculated the reciprocal values of exponential coefficients from an extended Cox model to facilitate interpretations.Goodness-of-fit test: R2 = 0.434.APACHE II, Acute Physiological and Chronic H