Table 3.
Sensitivity, Specificity and other characteristics in sonography compared to cystoscopy and their 95% confidence interval
| Variable |
Tumor
|
Trabeculation
|
Prostate median lobe bulging
|
|||
|---|---|---|---|---|---|---|
|
Cystoscopy
Sonography |
Positive | Negative | Positive | Negative | Positive | Negative |
| Positive | 5(8.3) | 2(3.3) | 7(11.7) | 3(5) | 3(8.1) | - |
| Negative | 2(3.3) | 51(85) | 23(38.3) | 27(45) | 2(5.4) | 32(86.5) |
| Sensitivity* | 71.43% (29.4,96.33) |
%70 (34.75, 93.3) |
%80.00 28.36, 99.49) |
|||
| Specificity* | %96.23 (87.02, 99.54) |
%54 (39.32, 68.19) |
%91.67 (77.53, 98.25) |
|||
| Positive predictive values* | %71.43 (37.25, 91.33) |
%23.33 (15.52, 33.52) |
%57.14 (29.3, 81.10) |
|||
| Negative predictive values* | %96.23 (88.76, 98.8) |
%90 (77.14, 96.0) |
%97.06 (85.08, 99.48) |
|||
| LR+* | 18.93 (4.49, 79.73) |
1.52 (0.92, 2.52) |
9.6 (2.98, 30.89) |
|||
| LR-* | 0.30 (0.09, 0.96) |
0.56 (0.21, 1.48) |
0.22 (0.04, 1.26) |
|||
| Prevalence * | %11.67 (4.82, 22.57) |
%16.67 (8.29, 28.52) |
%12.20 (4.08, 26.2) |
|||
| Accuracy * | %93.33 (83.8, 98.15) |
%56.67 (43.24, 69.41) |
%90.24 (76.87, 97.28) |
|||
* The pretenses show the 95% confidence interval for indexes of accuracy