Table 2. Treatment related toxicity according to age group.
| Toxicity | Younger group (n=482) | Older group (n=267) | P value |
|---|---|---|---|
| Radiation pneumonitis | 0.482 | ||
| Grade 0–2 | 452 (93.8%) | 246 (92.1%) | |
| Grade 3–5 | 30 (6.2%) | 21 (7.9%) | |
| Radiation esophagitis | 1.000 | ||
| Grade 0–2 | 473 (98.1%) | 262 (98.1%) | |
| Grade 3–5 | 9 (1.9%) | 5 (1.9%) | |
| Skin reaction | 0.603 | ||
| Grade 0–2 | 481 (99.8%) | 265 (99.3%) | |
| Grade 3–5 | 1 (0.2%) | 2 (0.7%) | |
| WBC decrease | 0.083 | ||
| Grade 0–2 | 423 (87.8%) | 246 (92.1%) | |
| Grade 3–5 | 59 (12.2%) | 21 (7.9%) | |
| Anemia | 1.000 | ||
| Grade 0–2 | 480 (99.6%) | 266 (99.6%) | |
| Grade 3–5 | 2 (0.4%) | 1 (0.4%) | |
| PLT decrease | 0.613 | ||
| Grade 0–2 | 475 (98.5%) | 261 (97.8%) | |
| Grade 3–5 | 7 (1.5%) | 6 (2.2%) | |
| Hematologic toxicity | 0.034* | ||
| Grade 0–2 | 418 (86.7%) | 246 (92.1%) | |
| Grade 3–5 | 64 (13.3%) | 21 (7.9%) | |
| Any toxicity | 0.286 | ||
| Grade 0–2 | 382 (79.3%) | 221 (82.8%) | |
| Grade 3–5 | 100 (20.7%) | 46 (17.2%) |
*, P<0.05.