Table 3. Cox proportional hazards model according to time until death due to OSCC.
| Variables in the Equation | ||||
|---|---|---|---|---|
| p-value | HR | 95.0% IC for HR | ||
| Lower | Upper | |||
| Tongue | 0,629 | - | - | - |
| FOM | 0,546 | 1,669 | 0,316 | 8,816 |
| Inferior lip | 0,292 | 2,570 | 0,443 | 14,895 |
| Palate | 0,390 | 2,129 | 0,380 | 11,927 |
| Buccal Mucosa | 0,177 | 5,866 | 0,449 | 76,699 |
| Retromolar trigone | 0,366 | 3,708 | 0,216 | 63,522 |
| Gingiva | 0,817 | 0,809 | 0,134 | 4,865 |
| Cytoplasmic PD-L1 | 0,044 | 0,426 | 0,186 | 0,977 |
| Membranous PD-L1 | 0,270 | 2,628 | 0,473 | 14,613 |
| HOXB9 | 0,189 | 6,699 | 0,393 | 114,285 |
| Gender | 0,007 | 0,112 | 0,022 | 0,554 |
| Age | 0,477 | 0,691 | 0,250 | 1,914 |
| Smoking | 0,632 | 1,621 | 0,224 | 11,731 |
| Alcohol | 0,996 | 1,005 | 0,159 | 6,361 |
| Size | 0,002 | 7,618 | 2,139 | 27,128 |
| Lymph Node metastasis | 0,320 | 0,593 | 0,211 | 1,662 |
| Distant metastasis | 0,652 | 0,525 | 0,032 | 8,654 |
| Histologic Grading - Well differentiated | 0,381 | - | - | - |
| Histologic Grading - Moderately differentiated | 0,439 | 2,668 | 0,222 | 32,081 |
| Histologic Grading - Poorly differentiated | 0,740 | 1,581 | 0,105 | 23,702 |
F.O.M: Floor of mouth