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Distribution of cases according BI-RADS classification and predictive value for malignancy as compared with data in the literature(14,37-42).
| BI-RADS | Distribution of cases according to BI-RADS classification | Observed PPV | Expected PPV |
|---|---|---|---|
| 0 | 104 (1.43%) | 5.5% | < 10% |
| 1 | 567 (7.82%) | 0 | 0 |
| 2 | 5,854 (80.76%) | 0 | 0 |
| 3 | 605 (8.35%) | 1.3% | < 2% |
| 4 | 106 (1.46%) | 41.3% | < 30% |
| 5 | 11 (0.15%) | 100% | 95% |
| 6 | 2 (0.03%) | - | 100% |
| Total | 7,249 (100%) |
