Table 2 Clinicopathologic characteristics of HNSCC patients in two cohorts
Variables | Primary cohort | Validation cohort | ||
|---|---|---|---|---|
N = 67 | % | N = 43 | % | |
Age | ||||
  ≤ 60 | 23 | 34.33 | 14 | 32.56 |
  > 60 | 44 | 65.67 | 29 | 67.44 |
Sex | ||||
 Female | 25 | 37.31 | 15 | 34.88 |
 Male | 42 | 62.68 | 28 | 65.12 |
TNM stage | ||||
 I | 2 | 2.99 | 2 | 4.65 |
 II | 18 | 26.87 | 10 | 23.26 |
 III | 10 | 14.93 | 7 | 16.28 |
 IV | 32 | 47.76 | 21 | 48.84 |
 NA | 5 | 7.46 | 3 | 6.98 |
neoplasm histologic grade | ||||
 1 | 12 | 17.91 | 9 | 20.93 |
 2 | 39 | 58.21 | 23 | 53.49 |
 3 | 14 | 20.90 | 10 | 23.26 |
 NA | 2 | 2.99 | 1 | 2.33 |
Ragnum Hypoxia Score | ||||
 <0 | 1 | 1.49 | 1 | 2.33 |
 0–9 | 10 | 14.93 | 5 | 11.63 |
 10–19 | 49 | 73.13 | 31 | 72.09 |
  ≥ 20 | 7 | 10.45 | 6 | 13.95 |
Survival status | ||||
 Alive | 28 | 41.79 | 17 | 39.53 |
 Dead | 39 | 58.21 | 26 | 60.47 |