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Receiver operating characteristic (ROC) curves for CRP on postoperative day (PODs) 3-5 (A) and PODs 7-10 (B) for patients with infective complications. An investigation of cut-off scores showed that the optimal CRP cut-off value was 169 mg/l on PODs 3-5 (sensitivity 26.3%; specificity 88.1%) and 62 mg/l on PODs 7-10 (sensitivity 69.2%, specificity 80%). The area under the ROC curve was 0,56 on PODs 3-5 and 0,76 on POD 7-10, p=0.0071 (C).
