Table 1 Clinico-pathological characteristics of the patients
Variable | Cohort No. 1 | Cohort No. 2 | Cohort No. 3 | |||
|---|---|---|---|---|---|---|
No. | % | No. | % | No. | % | |
Total No. of Patients | 72 | 21 | 21 | |||
Age | ||||||
Median | 57 | 63 | 63 | |||
Range | 41–76 | 40–73 | 41–75 | |||
Sex | ||||||
Male | 55 | 76.4 | 16 | 76.2 | 13 | 61.9 |
Female | 17 | 23.6 | 5 | 23.8 | 8 | 38.1 |
Tumor site | ||||||
Palatine tonsil | 62 | 86.1 | 18 | 85.7 | 14 | 66.7 |
Base of tongue | 10 | 13.9 | 2 | 9.5 | 4 | 19.0 |
Oropharynx NS | 0 | 0 | 1 | 4.8 | 3 | 14.3 |
T status | ||||||
T1 | 17 | 23.6 | 6 | 28.6 | 6 | 28.6 |
T2 | 36 | 50.0 | 11 | 52.4 | 12 | 57.1 |
T3 | 13 | 18.1 | 4 | 19 | 3 | 14.3 |
T4 | 6 | 8.3 | 0 | 0 | 0 | 0 |
N status | ||||||
N0 | 1 | 1.4 | 4 | 19 | 1 | 4.8 |
N1 | 15 | 20.8 | 17 | 81 | 16 | 76.2 |
N2 | 53 | 73.6 | 0 | 0 | 4 | 19.0 |
N3 | 3 | 4.2 | 0 | 0 | 0 | 0 |
Stage 8th edition of AJCC | ||||||
I | 46 | 63.9 | 17 | 81 | 15 | 71.4 |
II | 13 | 10.1 | 4 | 19 | 6 | 28.6 |
III | 5 | 6.9 | 0 | 0 | 0 | 0 |
IV | 8 | 19.1 | 0 | 0 | 0 | 0 |
Stage 7th edition of AJCC | ||||||
I | 0 | 0 | 1 | 4.8 | 1 | 4.8 |
II | 0 | 0 | 3 | 14.3 | 2 | 9.6 |
III | 18 | 25 | 4 | 19.0 | 1 | 4.8 |
IV | 54 | 75 | 13 | 61.9 | 17 | 80.8 |
HPV status | ||||||
HPV+ | 63 | 87.5 | 21 | 100 | 21 | 100 |
HPV- | 9 | 12.5 | 0 | 0 | 0 | 0 |
Smoking history | ||||||
Smoker | 22 | 30.6 | 7 | 34.4 | 9 | 42.9 |
Ex-smoker | 25 | 34.7 | 5 | 23.8 | 2 | 9.5 |
Non-smoker | 25 | 34.7 | 9 | 42.8 | 10 | 47.6 |