Table 1.
Patient characteristics (n = 640)
| Variables | Total | 2DRT | 3DCRT | IMRT |
|---|---|---|---|---|
| Patient number | 640 | 371 | 127 | 142 |
| Age, median (range) years | 52 (15-87) | 52 (15-87) | 53 (31-83) | 51 (23-79) |
| Male/female | 537/103 | 297/74 | 117/10 | 123/19 |
| Education years | ||||
| ≦6 | 245 | 147 | 52 | 46 |
| 6~12 | 305 | 168 | 64 | 73 |
| >12 | 90 | 56 | 11 | 23 |
| Annual family income, (104 NTD) | ||||
| <60 | 119 | 53 | 30 | 36 |
| 60~120 | 218 | 125 | 47 | 46 |
| ≥ 120 | 303 | 193 | 50 | 60 |
| Marital status | ||||
| With spouse | 518 | 298 | 102 | 118 |
| Without spouse | 122 | 73 | 25 | 24 |
| Employment | ||||
| Yes | 225 | 139 | 36 | 50 |
| No | 415 | 232 | 91 | 92 |
| Cancer sites | ||||
| Nasopharynx | 316 | 226 | 31 | 59 |
| Oral cavity | 129 | 64 | 33 | 32 |
| Oropharynx | 75 | 41 | 21 | 13 |
| Hypoppharynx | 75 | 20 | 28 | 27 |
| Larynx | 45 | 20 | 14 | 11 |
| AJCC stage | ||||
| I-II | 210 | 145 | 26 | 39 |
| III-IV | 430 | 226 | 101 | 103 |
| Radiation dose | ||||
| ≦70.2Gy | 281 | 126 | 81 | 74 |
| >70.2Gy | 359 | 245 | 46 | 68 |
| Surgery | ||||
| No | 391 | 264 | 53 | 74 |
| Yes | 249 | 107 | 74 | 68 |
| Chemotherapy | ||||
| No | 343 | 237 | 57 | 49 |
| Yes | 297 | 134 | 70 | 93 |
| Comorbidity score | ||||
| 0 | 373 | 219 | 66 | 88 |
| ≧1 | 267 | 152 | 61 | 54 |
| Follow-up years, median | 4.3 | 5.2 | 3.9 | 3.1 |
Abbreviations: RT = radiotherapy; 2DRT = two dimensional RT; 3DCRT = three dimensional conformal RT; IMRT = intensity-modulated RT; 1USD = 33NTD; AJCC = American Joint Committee on Cancer, 6th edition; Comorbidity score was based on Charlson comorbidity index.