Table 5. Receiver Operator Characteristics (ROC) curve analysis for pooled data with area under the curve (AUC), positive predictive values(PPV) and negative predictive values (NPV) for each postoperative day (POD).

Positive and negative likelihood ratios (LR+ and LR-) were calculated to assess the difference in odds of complications pre- and post CRP measurement.

POD	cut-off	AUC	95% CI	Sensitivity	Specificity	PPV	NPV	LR+	LR-
POD 3	140	0.783	0.742–0.824	81.7%	61.6%	25.7%	95.4%	2.13	0.30
POD 4	130	0.79	0.744–0.836	71.4%	72.5%	31.6%	93.4%	2.60	0.39
POD 5	101	0.800	0.740–0.840	76.6%	71.0%	34.9%	93.7%	2.64	0.33