Table 2 Diagnostic Accuracy of individual Preoperative Tests according to type of PJI
Markers | Specificity (%) | Sensitivity (%) | PPV (%) | NPV (%) | AUC (95% CI) |
|---|---|---|---|---|---|
D-dimer > 1167 ng/mL | |||||
All PJI | 75.3 (69–83) | 71.8 (58–86) | 45.9 (33.3–58.4) | 90.4 (81.1–99.7) | 0.774 (0.693–0.854) |
Early | 75.3 (69–83) | 85.7 (60–100) | 15.4 (4–26.7) | 99 (88–100) | 0.863 (0.785–0.942) |
Delayed | 75.3 (69–83) | 66.6 (36–97) | 15 (4–26.7) | 97.1 (86.8–100) | 0.721 (0.555–0.887) |
Late | 75.3 (69–83) | 69.5 (51–88) | 32.7 (19.5–46.8) | 93.7 (83.9–1009 | 0.767 (0.665–0.87) |
CRP > 1 mg/dL | |||||
All PJI | 82.1 (76–88) | 84.6 (73–96) | 56.8 (44–69) | 95 (87–100) | 0.869 (0.797–0.940) |
Early | 82.1 (76–88) | 85.7 (60–100) | 19.3 (5–33) | 99.13 (91–100) | 0.828 (0.612–1) |
Delayed | 82.1 (76–88) | 88.8 (68–100) | 24.2 (9.6–38.8) | 99.1 (91–100) | 0.936 (0.885–0.986) |
Late | 82.1 (76–88) | 82.6 (67–98) | 43.2 (28.5–57.8) | 96.6 (88.5–100) | 0.863 (0.772–0.953) |
ESR > 15 mm/h | |||||
All PJI | 72.8 (65–80) | 82 (70–94) | 45.7 (34–57.4) | 93.5 (82.8–100) | 0.792 (0.7–0.885) |
Early | 72.8 (65–80) | 100 (100–100) | 15.5 (5–26) | 100 (88–100) | 0.897 (0.828–0.967) |
Delayed | 72.8 (65–80) | 88.8 (63–100) | 17.3 (6.4–28.3) | 99 (87.3–100) | 0.866 (0.765–0.968) |
Late | 72.8 (65–80) | 73.9 (56–92) | 30.9 (18.7–43.1) | 94.4 (18.7–43.1) | 0.767 (0.592–0.871) |