| Variables | Side effects | OR (95% CI) | p-value | |
| Yes | No | |||
| Total dose (in Gray) |
|
|
| |
| Less than 45 | 22 (12.2) | 29 (32.2) |
|
|
| 45 and over | 158 (87.8) | 61 (67.8) | 0.29 (0.16 - 0.55) | <0.001 |