Table 1.
Study Subject Characteristics
| Controls
|
Cancer Cases
|
Pre-cancer Cases
|
||||
|---|---|---|---|---|---|---|
| N | % | N | % | N | % | |
|
|
|
|||||
| All | 85 | (100) | 65 | (100) | 13 | (100) |
| Sex | ||||||
| Male | 51 | 60.0 | 44 | 67.7 | 6 | 46.2 |
| Female | 34 | 40.0 | 21 | 32.3 | 7 | 53.8 |
| Age | ||||||
| <35 | 10 | 11.8 | 4 | 6.2 | 0 | 0 |
| 35–44 | 12 | 14.1 | 4 | 6.2 | 1 | 7.7 |
| 45–54 | 20 | 23.5 | 14 | 21.5 | 3 | 23.1 |
| 55–64 | 20 | 23.5 | 20 | 30.8 | 4 | 30.8 |
| ≥65 | 23 | 27.1 | 23 | 35.4 | 5 | 38.5 |
| Smoking Status | ||||||
| Never | 37 | 43.5 | 17 | 26.2 | 5 | 38.5 |
| Former | 32 | 37.7 | 40 | 61.5 | 4 | 30.8 |
| Current | 16 | 18.8 | 8 | 12.3 | 4 | 30.8 |
| Alcohol (oz./day) | ||||||
| 0 | 40 | 47.1 | 21 | 32.3 | 8 | 61.5 |
| <1 | 22 | 25.8 | 18 | 27.7 | 3 | 23.1 |
| 1–4 | 10 | 11.8 | 6 | 9.2 | 1 | 7.7 |
| 4–7 | 13 | 15.3 | 20 | 30.8 | 1 | 7.7 |
| Site of Lesion | ||||||
| Palate | 6 | 9.2 | 1 | 7.7 | ||
| Pharynx | 1 | 1.5 | ||||
| Tongue | 34 | 52.3 | 9 | 69.2 | ||
| Floor of mouth | 10 | 15.4 | 1 | 7.7 | ||
| Gingiva | 9 | 13.9 | 1 | 7.7 | ||
| Retromolar trigone | 2 | 3.1 | ||||
| Buccal mucosa | 3 | 4.6 | 1 | 7.7 | ||