Early prediction of postoperative infection using inflammatory markers after cytoreductive surgery for peritoneal carcinomatosis

Table 3 Daily area under the receiver operating characteristic curve of C-reactive protein and neutrophil-to-lymphocyte ratio in patients with overall postoperative infection and with intra-abdominal infection

Characteristic	AUC for OPI (95%CI)	P value	AUC for IAI (95%CI)	P value
Day 1
CRP (mg/L)	0.6 (0.4-0.7)	0.453	0.6 (0.5-0.8)	0.201
NLR (mg/L)	0.5 (0.4-0.7)	0.716	0.6 (0.3-0.8)	0.448
Day 2
CRP (mg/L)	0.7 (0.5-0.8)	0.019	0.7 (0.5-0.9)	0.129
NLR (mg/L)	0.5 (0.4-0.7)	0.946	0.6 (0.3-0.8)	0.557
Day 3
CRP (mg/L)	0.7 (0.6-0.9)	0.005	0.6 (0.3-0.8)	0.550
NLR (mg/L)	0.5 (0.3-0.6)	0.674	0.5 (0.3-0.8)	0.783
Day 4
CRP (mg/L)	0.7 (0.5-0.9)	0.038	0.5 (0.3-0.8)	0.831
NLR (mg/L)	0.6 (0.5-0.8)	0.120	0.6 (0.4-0.9)	0.294

Results are presented as medians and interquartile ranges. AUC: Area under the receiver operating characteristic curve; CI: Confidence interval; CRP: C-reactive protein; IAI: Intra-abdominal infection; NLR: Neutrophil-to-lymphocyte ratio; OPI: Overall postoperative infection.