| Grade | p53 | |||||
| Negative | Weak | Moderate | Strong | Total | ||
| Grade I | N | 2 | 4 | 2 | 0 | 8 |
| % | 25.00 | 50.00 | 25.00 | 0.00 | 100.00 | |
| Grade II | N | 18 | 20 | 59 | 14 | 111 |
| % | 16.22 | 18.02 | 53.15 | 12.61 | 100.00 | |
| Grade III | N | 5 | 4 | 12 | 20 | 41 |
| % | 12.20 | 9.76 | 29.27 | 48.78 | 100.00 | |
| Grade IV | N | 2 | 0 | 0 | 0 | 2 |
| % | 100.00 | 0.00 | 0.00 | 0.00 | 100.00 | |
| Total | N | 27 | 28 | 73 | 34 | 162 |
| % | 16.67 | 17.28 | 45.06 | 20.99 | 100.00 | |
| Chi-square | X2 | 36.516 | ||||
| P-value | 0.000 | |||||