| Characteristic | Category | Number | Proportion (%) |
| Age range | <40 years | 37 | 35.2 |
| ≥40 years | 68 | 64.8 | |
| Sex | Female | 105 | 98.1 |
| Male | 2 | 1.9 | |
| Menopause | Yes | 41 | 43.6 |
| No | 53 | 56.4 | |
| Not specified | 11 | / | |
| History of breast disease (benign or cancer) | Yes | 4 | 4.5 |
| No | 84 | 95.5 | |
| Not specified | 19 | / | |
| Family history of breast cancer | Yes | 4 | 4.3 |
| No | 88 | 95.7 | |
| Not specified | 15 | / |