Final results of the multivariate analysis regarding local control
| Variable | Score | Regression Coefficent | Hazard Ratio | 95% CI | P value |
|---|---|---|---|---|---|
| Primary tumor volume | 0 = 0–4 cm3; 1 = >4 cm3 | 1.13 | 3.1 | 1.4–7.1 | .007 |
| Subglottic extension | 0 = no; 1 = yes | 1.27 | 3.5 | 1.6–7.9 | .002 |
Note:—CI indicates confidence interval.