Parameters Statistical Analysis
  X2o X2 P-Value
Depth (≤ 4:>4 mm) 56.170 6.63 <.001 (S)
Pattern of invasion 1,2,3,4 21.061 11.3 <.001 (S)
Tumor Site1,2,3,4,5,6 17.919 15.1 .003 (S)
Degree of differentiation (1: 2,3) 14.459 6.63 <.001 (S)
Tumor Size (T1, T2, T3, T4) 13.602 11.3 .004 (S)
Lymphoplasmocytic infiltration (1: 2,3) 8.352 6.63 .004 (S)
Patients Sex .912 6.63 .340 (NS)
Patients Age (< =39 yr.: >=40 yr.) .721 6.63 .396 (NS)
X2 Pearson Chi Square, S=Significant result
Table 4: Statistical analysis (Chi-Square test).