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Classification of high-risk groups
| High-risk classification | No of patients (%) |
|---|---|
| Early onset breast cancer (age ≤40 years) (E) | 550 (72.6) |
| Bilateral breast cancer (B) | 67 (8.8) |
| Male breast cancer (M) | 15 (2) |
| Breast and ovarian cancer (BO) | 5 (0.7) |
| Multiple organ cancer patients including breast (Mu) | 42 (5.5) |
| Two or more of these high risksa | 79 (10.4) |
| Total | 758 (100.0) |
a E + B:53, E + M:1, E + BO:1, E + Mu:19, B + Mu:3, M + Mu:1, E + B + Mu:1
