Final model of the multiple regression analysis for the utility score
| Independent variable | EQ-5D utility score | ||
| Regression model | |||
| b | SE | p Value | |
| Constant | 0.820 | 0.018 | 0.000 |
| Severe adverse events (1=yes) | −0.353 | 0.039 | 0.000 |
| Combined radiotherapy and chemotherapy treatment (1=yes) | −0.069 | 0.034 | 0.041 |
| Explained variance=26% | |||