| Autres facteurs de risque | Effectif (n) | Fréquence (%) |
| Piercing | 194 | 96.5 |
| Scars | 108 | 53.7 |
| Alcohol consumption | 89 | 44.3 |
| Manicure using shared equipment | 76 | 37.8 |
| Sexually transmitted infection | 44 | 21.9 |
| Dental care | 13 | 6.5 |
| Tattoo | 7 | 3.5 |
| History of excision | 3 | 1.5 |
| Acupuncture | 1 | 0.5 |