Table 1 Baseline characteristics of 72 patients with locally advanced head and neck squamous cell carcinoma according to whether they achieved pathological complete remission (pCR)
Characteristic | pCR (n = 25) | Non-pCR (n = 47) | p-value | ||
|---|---|---|---|---|---|
n | % | n | % | ||
Gender | |||||
 Male | 22 | 35.5 | 40 | 64.5 | 0.735 |
 Female | 3 | 30.0 | 7 | 70.0 |  |
Median age (years) | 55 | Â | 55 | Â | Â |
Primary site | |||||
 Oral cavity | 4 | 30.8 | 9 | 69.2 | 0.869 |
 Oropharynx | 4 | 30.8 | 9 | 69.2 |  |
 Larynx/Hypopharynx | 17 | 37.0 | 29 | 63.0 |  |
T stage | |||||
  T1 | 1 | 50.0 | 1 | 50.0 | 0.218 |
  T2 | 7 | 63.6 | 4 | 36.4 |  |
  T3 | 7 | 35.0 | 13 | 65.0 |  |
  T4a | 9 | 26.5 | 25 | 73.5 |  |
  T4b | 1 | 20.0 | 4 | 80.0 |  |
N stage | |||||
  N0 | 2 | 25.0 | 6 | 75.0 | 0.266 |
 N1 | 1 | 10.0 | 9 | 90.0 |  |
 N2 | 18 | 40.9 | 26 | 59.1 |  |
 N3 | 4 | 40.0 | 6 | 60.0 |  |
Clinical group | |||||
 III | 1 | 14.3 | 6 | 85.7 | 0.463 |
 IVA | 9 | 22.5 | 31 | 77.5 |  |
 IVB | 5 | 33.3 | 10 | 66.7 |  |
Concurrent chemotherapy | |||||
  Yes | 10 | 27.0 | 27 | 73.0 | 0.158 |
  No | 15 | 42.9 | 20 | 57.1 |  |
Radiotherapy technique | |||||
 2D | 14 | 29.8 | 33 | 70.2 | 0.228 |
  IMRT | 11 | 44.0 | 14 | 56.0 |  |