| Risk factors | Workforce | Percentage |
| Family antecedent | 39 | 48.75 |
| Early menarche | 5 | 6.25 |
| Late menopause | 4 | 5.00 |
| Contraception | 16 | 20.00 |
| Rayon X | 3 | 3.75 |
| Tobacco | 39 | 48.75 |
| Alcohol | 39 | 48.75 |
| Nulliparous | 7 | 8.75 |
| Breast pathology | 4 | 5.00 |
| Female sex | 5 | 6.25 |
| Age > 40 years | 5 | 6.25 |
| Hormonal substitution | 12 | 15.00 |
| Lack of breastfeeding | 15 | 18.75 |
| Bra | 6 | 7.50 |