Research Article
Outcome of Early-Stage Glottic Laryngeal Carcinoma Patients Treated with Radical Radiotherapy Using Different Techniques
Table 2
Univariate analyses: prognostic factors for 5 year overall survival, disease-free survival, disease-specific survival, and local control.
| Prognostic factor | Overall survival | Disease-free survival | Disease-specific survival | Local control | 5 year (%) | | 5 year (%) | | 5 year (%) | | 5 year (%) | |
| Stage | | 0.001 | | 0.003 | | 0.033 | | 0.001 | Stage 0 | 86 | | 72.1 | | 95.8 | | 79.2 | | Stage 1 | 84 | | 74.9 | | 95.5 | | 93.1 | | Stage 2 | 67.6 | | 62.4 | | 88.6 | | 78.7 | |
| Anterior commissure infiltration | | <0.001 | | <0.001 | | <0.001 | | <0.001 | No | 87.3 | | 79.3 | | 96.7 | | 92.7 | | Yes | 79 | | 66.6 | | 93.6 | | 85.6 | |
| Radiotherapy techniques | | 0.61 | | 0.51 | | 0.231 | | 0.769 | Conventional | 81 | | 73.1 | | 95.6 | | 86.5 | | 3DCRT | 83 | | 71.8 | | 92.2 | | 90.9 | | VMAT | 87.2 | | 76.7 | | 100 | | 94.7 | |
| Beam energy | | 0.52 | | 0.55 | | 0.028 | | 0.266 | Cobalt-60 | 79.2 | | 72.2 | | 91.2 | | 86.6 | | 6 MV X-rays | 85.4 | | 72.5 | | 98.4 | | 91.4 | | Log-rank test (95% CI) | | | | |
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