| With RP (n = 25) | Without RP (n = 51) | P value | ||
| Univariate | Multivariate | |||
| Mean radiation dose (GY) 20 30 | 20 (80%) 5 (20%) | 40 (78%) 11 (22%) | 0.453 0.564 | 0.082 0.571 |
| Concurrent Chemotherapy | 12 (48%) | 29 (57%) | 0.341 | 0.123 |