Table 1 Demographic and clinical characteristics of OSCC patients
Characteristic | Training set (NÂ =Â 313) | Validation set 1a (NÂ =Â 82) | Validation set 2 (NÂ =Â 53) |
|---|---|---|---|
Censor rate | 66.4% | 71.9% | 71.6% |
Age, median years (range) | 61.0 (19–90) | 58.0 (23–85) | 45.0 (28–79) |
Gender, n (%) | |||
 Male | 206 (65.8) | 36 (43.9) | 11 (20.7) |
 Female | 107 (34.2) | 46 (56.1) | 42 (79.3) |
Smoking status, n (%) | |||
 Never | 87 (27.8) | 30 (36.6) | – |
 Current/former | 217 (69.3) | 44 (53.7) | – |
 NA | 9 (2.9) | 8 (9.8) | – |
Race, n (%) | |||
 White | 272 (86.9) | 79 (96.3) | – |
 Other | 31 (9.9) | 3 (3.7) | – |
 NA | 10 (3.2) | 0 (0) | – |
HPV status, n (%) | |||
 Positive | 14 (4.5) | 9 (11.0) | 22 (41.5) |
 Negative | 176 (56.2) | 64 (78.0) | 16 (30.2) |
 NA | 123 (39.3) | 9 (11.0) | 15 (28.3) |
TNM stage, n (%) | |||
 Early (I–II) | 88 (28.1) | 48 (58.5) | 18 (34.0) |
 Advanced (III–IV) | 218 (69.6) | 34 (41.5) | 35 (66.0) |
 NA | 7 (2.2) | 0 (0) | 0 (0) |