- Risk factors and history of surgery of breast cancer
| Risk factors* | n (%) |
|---|---|
| Family history of breast cancer | |
| Yes | 379 (19.8) |
| No | 1532 (80.2) |
| Mother (Yes) | 110 (5.8) |
| Sister (Yes) | 98 (5.1) |
| Daughter (Yes) | 10 (0.5) |
| Other relative (Yes) | 193 (10.1) |
| History of breast cancer (Yes) | 6 (0.31) |
| History of benign breast diseases (Yes) | 55 (2.9) |
| History of ovarian cancer (Yes) | 6 (0.3) |
| History colon cancer (Yes) | 5 (0.3) |
| History of cervical cancer (Yes) | 10 (0.5) |
| History of other cancer (Yes) | 24 (1.3) |
| History of surgery | |
| Lumpectomy (Yes) | 32 (1.7) |
| Mastectomy (Yes) | 6 (0.3) |
| Breast oncoplastic surgery (Yes) | 36 (1.9) |
| Implants (Yes) | 15 (0.8) |
*Participants might be counted more than once if they have multiple risk factors.