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Table 4 Diagnostic evaluation of CRP, ESR and Frozen section at re-implantations

From: The proper timing of second-stage revision in treating periprosthetic knee infection: reliable indicators and risk factors

CRP

40% (13.7–72.6%)

88.7% (78.5–94.7%)

33.3% (11.3–64.6%)

91.3% (81.3–96.4%)

82.70%

0.732

0.29

ESR

50% (20.1–80.0%)

84.5% (73.5–91.6%)

31.3% (12.1–58.5%)

92.3% (82.2–97.1%)

80.20%

0.688

0.35

FS

90% (54.1–99.5%)

83.1% (71.9–90.6%)

42.3% (22.6–65.6%)

98.3% (89.9–99.9%)

84.00%

0.843

0.73

  1. PPV positive predictive value, NPV negative predictive value, AUC area under the curve