Table 2.
Outcomes in 61 IMRT patients were analyzed according to use of chemotherapy and treatment modality
| Factor | 3-year OS (%) | χ2 | P-value | 3-year LC (%) | χ2 | P-value | 3-year DMFS (%) | χ2 | P-value |
|---|---|---|---|---|---|---|---|---|---|
| Chemotherapy | 5.52 | 0.035 | 5.25 | 0.042 | 10.07 | 0.015 | |||
| IMRT | 59.7 | 67.0 | 65.3 | ||||||
| CIMRT | 74.1 | 83.8 | 79.0 | ||||||
| Treatment modality | 18.49 | 0.0019 | 12.02 | 0.011 | 8.07 | 0.038 | |||
| Definitive IMRT | 46.5 | 60.0 | 65.0 | ||||||
| Postoperative IMRT | 81.1 | 79.6 | 82.5 |
Abbreviations: CIMRT, chemotherapy combined with intensity-modulated radiation therapy; DMFS, distant metastasis-free survival; IMRT, intensity-modulated radiation therapy; LC, local control; OS, overall survival.