Table 4.
Diagnostic accuracy measures for each method put to test. Within our analysis, breast ultrasonography showed the highest rate of false positives (46.02%) whereas bimanual palpation showed the highest rate of false negatives (69.12%). FPR: false positive rate, FNR: false negative rate, NPV: negative predictive value, PPV: positive predictive value.
| Clinical Measurement | FPR (%) | FNR (%) | Sensitivity (%) |
Specificity (%) | NPV (%) | PPV (%) |
|---|---|---|---|---|---|---|
| Physical examination | 4.59% (5/109) | 69.12% (47/68) | 95.41% (104/109) |
30.89% (21/68) |
80.77% (21/26) |
68.87% (104/151) |
| Ultrasonography | 46.02% (52/113) | 22.78% (18/79) | 53.98% (61/113) |
77.22% (61/79) |
53.98% (61/113) |
77.22% (61/79) |
| Mammogram | 15.53% (16/103) | 50.00% (30/60) | 84.47% (87/103) |
50.00% (30/60) | 65.22% (30/46) |
74.36% (87/117) |