Figure 3. Relative percentage of patients with PCT levels above and below the cutoff value, stratified by RIFLE classes.

The cutoff value for PCT levels was set at 3.30/ml. RIFLE = Risk, Injury, Failure, Loss, and End-stage kidney disease. P<0.001, Compared relative percentage between AKI(RIFLE class Risk, Injury, and Failure) and non-AKI(RIFLE 0) by chi-square test, and P = 0.832, among RIFLE class Risk, Injury, and Failure by the Cochran Armitage trend test.