Table 3 Results of ROC analysis of dichotomized values in the prediction of sepsis
Test predictors | N (%) | pre-test probability | Sensitivity (95% CI) | Specificity (95% CI) | PPV (95% CI) | NPV (95% CI) | AUC (95% CI) |
|---|---|---|---|---|---|---|---|
MDW > 20.0 | 126 (97.7) | 0.58 | 95.9 (88.5–99.1) | 35.8 (23.1–50.2) | 67.3 (57.4–76.2) | 86.4 (65.1–97.1) | 0.66 (0.59–0.73) |
MDW > 22.0 | 126 (97.7) | 0.58 | 79.5 (68.4–88.0) | 71.7 (57.7–83.2) | 79.5 (68.4–88.0) | 71.7 (57.7–83.2) | 0.76 (0.68–0.83) |
MDW > 23.0 | 126 (97.7) | 0.58 | 75.3 (63.9–84.7) | 88.7 (77.0–95.7) | 90.2 (79.8–96.3) | 72.3 (59.8–82.7) | 0.82 (0.75–0.89) |
PCT > 1a | 128 (99.2) | 0.58 | 64.9 (52.9–75.6) | 77.8 (64.4–88.0) | 80.0 (67.7–89.2) | 61.8 (49.2–73.3) | 0.71 (0.63–0.79) |
PCT > 0.5a | 128 (99.2) | 0.58 | 77.0 (65.8–86.0) | 70.4 (56.4–82.0) | 78.1 (66.9–86.9) | 69.1 (55.2–80.9) | 0.74 (0.66–0.82) |
MDW > 20.0 and PCT > 0.5a | 126 (97.7) | 0.58 | 74.0 (62.4–83.5) | 77.4 (63.8–87.7) | 81.8 (70.4–90.2) | 68.3 (55.0–79.7) | 0.76 (0.68–0.83) |
MDW > 22.0 and PCT > 0.5a | 126 (97.7) | 0.58 | 71.2 (59.4–81.2) | 88.7 (77.0–95.7) | 89.7 (78.8–96.1) | 69.1 (56.7–79.8) | 0.80 (0.73–0.87) |
MDW > 23.0 and PCT > 0.5a | 126 (97.7) | 0.58 | 68.5 (56.6–78.9) | 92.5 (81.8–97.9) | 92.6 (82.1–97.9) | 68.1 (56.0–78.6) | 0.80 (0.74–0.87) |