| Risk factors | Female | Male | Total |
| Alcohol | 3 | 12 | 15 |
| Tobacco/Smoking | 5 | 15 | 20 |
| Spices | 8 | 3 | 11 |
| Opium consumption | 1 | 2 | 3 |
| Combination of risk factors | 5 | 24 | 29 |
| Total | 22 | 56 | 78 |