|  | Number of Specimens | Mean Score (SDa) | pb |
---|
Sex | Â | Â | Â | Â |
 | Male | 57 | 7.5 (2.6) | p = 0.47 |
 | Female | 25 | 7.9 (2.8) |  |
Age | Â | Â | Â | Â |
 | < 30 | 22 | 9.0 (2.4) | p = 0.004 |
 | ≥ 30 | 60 | 7.1 (2.6) |  |
Histological typec | Â | Â | Â | Â |
 | SCC | 1 | 7.1 (3.1) | p = 0.42 |
 | NKC | 52 | 8.0 (2.3) |  |
 | UC | 29 | 7.6 (2.7) |  |
TNMd | Â | Â | Â | Â |
 | T2 + T3 | 40 | 7.2 (2.6) | p = 0.18 |
 | T4 | 42 | 8.0 (2.7) |  |
 | N0 | 21 | 7.4 (2.9) | p = 0.67 |
 | N+ | 61 | 7.7 (2.6) |  |
 | M0 | 73 | 7.8 (2.5) | p = 0.83 |
 | M+ | 9 | 7.6 (2.7) |  |
Metastatic relapse | Â | Â | Â | Â |
 | + | 24 | 7.5 (2.8) | p = 0.94 |
 | - | 47 | 7.6 (2.6) |  |
 | NAe | 11 |  |  |
- a SD: standard deviation b Based on the Student t-test cHistological type : SCC : squamous cell carcinoma, NKC : non-keratinizing carcinoma, UC : undifferentiated carcinoma. d Clinical staging: primary tumor extension classified T2, T3 or T4 according to AJCC/UICC (1997); regional lymph node extension classified N0 in the absence of clinical or radiological evidence of lymph node invasion at the initial workup, N+ in the other cases; metastatic status defined as M0 in the absence of clinical or radiological evidence of distant metastasis at the initial workup, M+ in the other cases (synchronous metastases). eNA : not applicable.