Table 4 Toxic and side effect according to radiation dose
|  | SD (≤55 Gy) | HD-conventional (55–63 Gy) | HD-ultra (≥ 63 Gy) | χ² | P |
|---|---|---|---|---|---|
Radiation esophagitis | Â | Â | Â | 10.719 | 0.097 |
0 grade | 58(30.5%) | 285(36.4%) | 94(41.2%) | Â | Â |
1 grade | 51(26.8%) | 242(30.9%) | 68(29.8%) | Â | Â |
2 grade | 65(34.2%) | 199(25.4%) | 51(22.4%) | Â | Â |
≥ 3 grade | 16(8.4%) | 56(7.2%) | 15(6.6%) |  |  |
Radiation pneumonitis | Â | Â | Â | 7.977 | 0.240 |
0 grade | 163(91.1%) | 685(91.7%) | 198(87.6%) | Â | Â |
1 grade | 8(4.5%) | 45(6.0%) | 20(8.8%) | Â | Â |
2 grade | 6(3.4%) | 9(1.2%) | 5(2.2%) | Â | Â |
≥ 3 grade | 2(1.1%) | 8(1.1%) | 3(1.3%) |  |  |
Myelosuppression | Â | Â | Â | 13.249 | 0.039 |
0 grade | 54(35.1%) | 195(30.8%) | 58(29.4%) | Â | Â |
1 grade | 50(32.5%) | 175(27.6%) | 52(26.4%) | Â | Â |
2 grade | 33(21.4%) | 168(26.5%) | 42(21.3%) | Â | Â |
≥ 3 grade | 17(11%) | 95(15%) | 45(22.8%) |  |  |