Figure 4. Receiver-operating characteristic (ROC) of the optimal cutoff values for preoperative serum CRP in predicting ER and LR.
(a) Preoperative serum CRP as indicator of ER with the area under the curve (AUC) of 0.65 (95% CI, 0.58–0.72) and the optimal cutoff point was 1.5 mg/dl with a sensitivity of 60.6% and a specificity of 69.4%. (b) Preoperative serum CRP as indicator of LR with the AUC of 0.63 (95% CI, 0.54–0.71). The optimal cutoff point was 1.5 mg/dl with a sensitivity of 56.2% and a specificity of 69.4%.