Urine sCD163 levels on the day of admission to the ICU. A, SIRS group compared with the sepsis group. B, Receiver-operating characteristic (ROC) curves for urine sCD63 levels for diagnosing sepsis. C, SIRS group compared with the severe sepsis group according to severity of sepsis. The boxes indicate the interquartile range (IQR). The dark lines denotes the median. The whiskers portray minimum and maximum values.