Table 1.: Clinicopathologic parameters of the enrolled patients with OSCC.

Stage Total I II III IV P-value
Number of patients 72 7 16 14 35  
Age (years) 65.0 ± 15.4 70.5± 16.1 58.3± 16.0 71.9± 8.7 64.2± 15.5 0.3842
Gender  
   Male 44 3 9 9 23 0.2146
   Female 28 4 7 5 12  
Location  
   Tongue 40 5 12 8 15 0.8471
   Lower gingival 11 0 2 2 7  
   Upper gingival 10 2 2 2 4  
   Oral floor 5 0 0 1 4  
   Buccal mucosa 4 0 0 1 3  
   Plate 1 0 0 0 1  
   Lip 1 0 0 0 1  
Tumor size  
   T1 7 7 0 0 0 0.0001**
   T2 22 0 16 2 4  
   T3 18 0 0 12 6  
   T4 25 0 0 0 25  
LN-metastasis  
   N0 41 7 16 11 7 0.0001**
   N1 8 0 0 3 5  
   N2 23 0 0 0 23  
Distal metastases  
   Negative 72 7 16 14 35 1.0000
   Positive 0 0 0 0 0  

The clinical staging and TNM classification were based on the UICC staging system as described (Sobin L, et al.). (*p < 0.05, **p < 0.01)