Fig. 2

Evaluation of previous scoring systems in the test group. Note: For POSSUM, the AUCs of the PS, OS and TS for the prediction of the postoperative complications were 78.4, 81.1 and 83.0%, respectively (a). For E-PASS scoring system, the AUCs of PRS, SSS, and CRS were 71.2, 68.9 and 73.5%, respectively (b). The AUCs of APS, age, CPS and TS were 73.5%, 58.7, 56.0 and 77.3%, respectively, in APACHE-II (c) and were 76.6, 58.7, 56.0 and 78.1%, respectively, in APACHE-III (d). PS = physiological score; OS = operative score; TS = total score; PRS = preoperative risk score, SSS = surgical stress score; CRS = comprehensive risk score; APS = acute physiological score; and CHS = chronic health status