Table 3. Knowledge of reported risk factors for oropharyngeal cancer among 207 GPs in the Netherlands (2020).
| Risk factor | Yes | No | Not sure | |||
|---|---|---|---|---|---|---|
| n | % | n | % | n | % | |
| Smoking | 207 | 100.0 | 0 | 0.0 | 0 | 0.0 |
| Alcohol abuse | 203 | 98.1 | 1 | 0.5 | 3 | 1.4 |
| Chewing of tobacco | 189 | 91.3 | 4 | 1.9 | 14 | 6.8 |
| Chewing of betel leaf/palm/nut | 58 | 28.0 | 12 | 5.8 | 137 | 66.2 |
| Marijuana use | 106 | 51.2 | 24 | 11.6 | 77 | 37.2 |
| Poor oral hygiene | 107 | 51.7 | 54 | 26.1 | 46 | 22.2 |
| Herpes simplex virus infection | 27 | 13.0 | 99 | 47.8 | 81 | 39.1 |
| Human papillomavirus infection | 163 | 78.7 | 9 | 4.3 | 35 | 16.9 |
| Positive family history | 117 | 56.5 | 40 | 19.3 | 50 | 24.2 |
| Low fruit and vegetable consumption | 65 | 31.4 | 47 | 22.7 | 95 | 45.9 |
| Sun exposure | 34 | 16.4 | 110 | 53.1 | 63 | 30.4 |
Herpes Simplex virus infection, marijuana use, and sun exposure are not proven risk factors for oropharyngeal cancer.