Table 2.
Baseline characteristics of study patients according to p16 status.
| p16 positive (n = 90) | p16 negative (n = 131) | P | |
|---|---|---|---|
|
| |||
| Age, y | – | – | 0.0048 |
| 0–59 | 56 (62%) | 55 (42%) | – |
| 60+ | 34 (38%) | 76 (58%) | – |
| Sex | – | – | 0.1403 |
| Male | 72 (80%) | 92 (70%) | – |
| Female | 18 (20%) | 39 (30%) | – |
| TNM7 | – | – | <0.0001 |
| I | 1 (1%) | 18 (14%) | – |
| II | 6 (7%) | 22 (17%) | – |
| III | 14 (16%) | 21 (16%) | – |
| IV | 69 (77%) | 61 (47%) | – |
| Missing | 0 (0%) | 9 (7%) | – |
| Smoker status | – | – | <0.0001 |
| Never or previous | 47 (52%) | 29 (22%) | – |
| Current | 22 (24%) | 69 (53%) | – |
| Missing | 21 (23%) | 33 (25%) | – |
| Alcohol history | – | – | 0.8181 |
| No | 13 (14%) | 21 (16%) | – |
| Yes | 41 (46%) | 63 (48%) | – |
| Missing | 36 (40%) | 47 (36%) | – |
| Curative intent with surgery | – | – | 0.0024 |
| Yes | 60 (67%) | 64 (49%) | – |
| No | 25 (28%) | 39 (30%) | – |
| No treatment/palliative | 5 (6%) | 28 (21%) | – |
Note: Data are presented as number of patients (%). Differences in patient characteristics according to p16 status were compared using Fisher exact test for categorical variables.