Table 4.
Screening performance characteristics of urine red blood cell count in comparison with the results of abdominopelvic computed tomography scan
| Characteristics | kidney | Spleen | Liver | Free fluid |
|---|---|---|---|---|
| Sensitivity | 18.1(9.5-31.3) | 10.9 (4.5-22.9) | 9.0 (3.3-20.7) | 16.3 (8.2-29.3) |
| Specificity | 91.4 (87.3-94.4) | 95.5 (92.1-97.5) | 93.3 (89.4-95.8) | 99.1 (96.7-99.8) |
| PPV 1 | 30.3 (16.2-48.8) | 33.3 (14.3-58.8) | 21.7 (8.2-44.2) | 81.8 (47.7-96.7) |
| NPV 2 | 84.5 (79.8-88.4) | 84.0 (79.3-87.8) | 83.4 (78.6-87.3) | 84 (79.1-87.9) |
| PLR 3 | 0.43 (0.2-0.8) | 0.5 (0.24-1.03) | 0.27 (0.12-0.62) | 4.5 (1.24-16.2) |
| NLR 4 | 0.18 (0.13-0.23) | 0.18 (0.14-0.24) | 0.19 (0.15-0.25) | 0.19 (0.14-0.24) |
1
. Positive predictive value;
2
. Negative predictive value;
3
. Positive Likelihood Ratio;
4
. Negative Likelihood Ratio.