Study population characteristics based on final diagnosis
| Parameters | Total (n=258) | Final diagnosis | P value | |
| Negative (n=195) | Positive (n=63) | |||
| Age: median (range) | 41 (18–80) | 40 (18–80) | 55 (26–78) | <0.001 |
| Menopause | 92 (35.7%) | 54 (27.7%) | 38 (60.3%) | <0.001 |
| Relevant medical history | 17 (6.6%) | 10 (5.1%) | 7 (11.1%) | 0.139 |
| Family history of cancer | 38 (14.7%) | 31 (15.9%) | 7 (11.1%) | 0.418 |
| Lump, swelling or mass in breast | 185 (71.7%) | 129 (66.2%) | 56 (88.9%) | <0.001 |
| Breast pain/tenderness unrelated to menstrual cycle | 147 (57.0%) | 126 (64.6%) | 21 (33.3%) | <0.001 |
| Texture change on breast | 12 (4.7%) | 10 (5.1%) | 2 (3.2%) | 0.736 |
| Increase in breast size unrelated to menstrual cycle | 4 (1.6%) | 4 (2.1%) | 0 (0.0%) | 0.575 |
| Thickening in and around breast or underarm area | 4 (1.6%) | 3 (1.5%) | 1 (1.6%) | 0.999 |
| Other symptoms of breast cancer | 3 (1.2%) | 2 (1.0%) | 1 (1.6%) | 0.575 |