| Analysed factors | Cancer N = 43 | No cancer N = 352 | X2 or z-score | p |
| Average age-mean | 43.7 | 27.9 | 2.506 | 0.0120 |
| Age greater than or equal to 40-n (%) | 33 (76.7) | 93 (26.4) | 44.672 | 0.0001 |
| Menarche before 12 years-n (%) | 4 (9.3) | 29 (8.2) | 0.057 | 0.8119 |
| Nulliparous women-n (%) | 19 (44.2) | 124 (35.2) | 1.332 | 0.2485 |
| Hormonal contraception-n (%) | 13 (30.2) | 91 (25.9) | 0.379 | 0.5381 |
| Breast-fed her baby-n (%) | 30 (69.8) | 208 (59.1) | 1.824 | 0.1769 |
| Menopaused women-n (%) | 6 (13.9) | 43 (12.2) | 0.106 | 0.7442 |
| Family history of breast cancer-n (%) | 4 (9.3) | 21 (6.0) | 0.719 | 0.3963 |
| Breast palpable mass or nodule-n (%) | 39 (90.7) | 276 (78.4) | 3.583 | 0.0584 |
| Breast pains-n (%) | 3 (7.0) | 22 (6.2) | 0.034 | 0.8534 |
| Nipple discharge-n (%) | 5 (11.6) | 15 (4.3) | 4.326 | 0.0375 |
| Topography of lesion-n (%) |
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|
|
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| Isolated right-sided lesion | 28 (65.1) | 169 (48.0) |
|
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| Single left-sided involvement | 21 (48.8) | 146 (41.5) | 0.2165 | 0.8974 |
| Bilateral involvement | 4 (9.3) | 27 (7.7) |
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| Breast quadrants involved-n (%) |
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|
|
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| Superior-external quadrant | 23 (53.5) | 138 (39.2) | 3.238 | 0.0720 |
| Others 3 quadrants | 20 (46.5) | 214 (60.8) |