Table 3. Univariate analysis of prognostic factors on local control and DFS.
| Local Control | DFS | ||||||
|---|---|---|---|---|---|---|---|
| Factors | N = 25 | Local control (%) | p value | N = 12 | DFS (%) | p value | |
| Stage | Stage I | 17 | 93.9 | 0.042 | 9 | 96.5 | 0.469 |
| Stage II | 8 | 84.9 | 3 | 94 | |||
| Age | ≤60 | 14 | 91.4 | 0.66 | 7 | 95.7 | 0.662 |
| >60 | 11 | 92.4 | 5 | 96.5 | |||
| Supraglottic involvement | Present | 0 | 100 | 0.269 | 0 | 100 | 0.45 |
| Absent | 25 | 91.5 | 12 | 95.9 | |||
| Subglottic involvement | Present | 6 | 70.5 | 0.001 | 2 | 90.5 | 0.123 |
| Absent | 19 | 93.4 | 10 | 96.5 | |||
| Impaired VC mobility | Present | 2 | 92.1 | 0.06 | 1 | 93.3 | 0.817 |
| Absent | 23 | 93.4 | 11 | 96.3 | |||
| Anterior commissure | Present | 14 | 90.9 | 0.404 | 6 | 96.10 | 0.893 |
| Absent | 11 | 92.8 | 6 | 96.10 | |||
| Tumor grade | Grade 1 | 15 | 91.5 | 0.816 | 7 | 96.10 | 0.969 |
| Grade 2&3 | 10 | 92.5 | 5 | 96.20 | |||
| Treatment duration | ≤21 days | 20 | 92.7 | 0.29 | 1 | 95.90 | 0.623 |
| >21 days | 5 | 86.6 | 11 | 97 | |||
| Field size | ≤39cc | 10 | 94.6 | 0.032 | 4 | 97.9 | 0.056 |
| >39cc | 15 | 87.9 | 8 | 93.4 | |||
DFS, Disease free survival