Figure 1:
Baseline characteristics of patients and tumor of head and neck cancer patients
| Characteristics | Group 1 | Group 2 | Group 3 | Group 4 | Group 5 |
|---|---|---|---|---|---|
| Age | <40: 1 | <40: 1 | <40: 3 | <40: 0 | <40: 1 |
| 40–49: 3 | 40–49: 4 | 40–49: 5 | 40–49: 1 | 40–49: 0 | |
| 50–59: 7 | 50–59: 6 | 50–59: 6 | 50–59: 0 | 50–59: 2 | |
| 60–69: 8 | 60–69: 3 | 60–69: 4 | 60–69: 1 | 60–69: 1 | |
| ≥70: 3 | ≥70: 0 | ≥70: 0 | ≥70: 0 | ≥70: 0 | |
| Gender | M: 20 | M: 14 | M: 13 | M: 1 | M: 3 |
| F: 2 | F: 0 | F: 5 | F: 1 | F: 1 | |
| Background | R: 19 | R: 12 | R: 12 | R: 1 | R: 3 |
| U: 3 | U: 2 | U: 6 | U: 1 | U: 1 | |
| Smoker | Y: 16 | Y: 14 | Y: 11 | Y: 0 | Y: 3 |
| N: 6 | N: 0 | N: 7 | N: 2 | N: 1 | |
| Alcohol intake | Y: 14 | Y: 9 | Y: 9 | Y: 0 | Y: 2 |
| N: 8 | N: 5 | N: 9 | N: 2 | N: 2 | |
| KPS | 70: 6 | 70: 4 | 70: 4 | 70: 1 | 70: 1 |
| 80: 6 | 80: 7 | 80: 8 | 80: 1 | 80: 1 | |
| 90: 10 | 90: 3 | 90: 6 | 90: 0 | 90: 2 | |
| Primary site | OC: 2 | OC: 0 | OC: 1 | OC: 0 | OC: 1 |
| OP: 16 | OP: 12 | OP: 9 | OP: 2 | OP: 3 | |
| HP: 0 | HP: 1 | HP: 5 | HP: 0 | HP: 0 | |
| L: 4 | L: 1 | L: 3 | L: 0 | L: 0 | |
| Histology | MDSCC: 12 | MDSCC: 8 | MDSCC: 6 | MDSCC: 2 | MDSCC: 2 |
| PDSCC: 2 | PDSCC: 2 | PDSCC:4 | PDSCC: 0 | PDSCC: 1 | |
| WDSCC: 8 | WDSCC: 4 | WDSCC: 8 | WDSCC: 0 | WDSCC: 1 | |
| Stage | III: 6 | III: 1 | III: 1 | III: 0 | III: 0 |
| IVA: 16 | IVA: 13 | IVA: 17 | IVA: 2 | IVA: 4 |