Table 1.
Baseline characteristics of patients.
| Characteristics | 45Gy group | 50.4Gy group | χ2 | p |
|---|---|---|---|---|
| Age (years) | 0.051 | 0.821 | ||
| Median (Range) | 59.5 (36-79) | 58 (38-77) | ||
| >55 | 27 | 42 | ||
| ≤55 | 21 | 30 | ||
| Gender | 0.068 | 0.794 | ||
| Male | 37 | 54 | ||
| Female | 11 | 18 | ||
| Clinical stage | ||||
| T3 | 36 | 51 | 0.251 | 0.617 |
| T4 | 12 | 21 | ||
| N0 | 6 | 8 | 1.001 | 0.606 |
| N1 | 17 | 20 | ||
| N2 | 25 | 44 | ||
| Tumor location | 1.066 | 0.587 | ||
| Low | 22 | 27 | ||
| Mid | 25 | 42 | ||
| High | 1 | 3 | ||
| Tumor differentiation | 0.988 | 0.610 | ||
| Poorly differentiated | 9 | 12 | ||
| Moderately differentiated | 23 | 41 | ||
| Well differentiated | 16 | 19 | ||
| CRM | 1.442 | 0.230 | ||
| (+) | 18 | 35 | ||
| (-) | 30 | 37 | ||
| EMVI | 0.050 | 0.823 | ||
| (+) | 23 | 33 | ||
| (-) | 25 | 39 | ||
| EGFR | 4.300 | 0.116 | ||
| (+) | 24 | 46 | ||
| (-) | 13 | 19 | ||
| N/A | 11 | 7 | ||
| Her-2 | 3.952 | 0.157 | ||
| (+) | 9 | 15 | ||
| (-) | 28 | 50 | ||
| N/A | 11 | 7 | ||
| MMR | 4.263 | 0.122 | ||
| pMMR | 29 | 54 | ||
| dMMR | 8 | 11 | ||
| N/A | 11 | 7 |
CRM, circumferential resection margin; EMVI, extramural venous invasion; EGFR, epidermal growth factor receptor; Her-2, human epidermal growth factor receptor-2; MMR, mismatch repair; dMMR, mismatch-repair-deficient; pMMR, mismatch-repair-proficient; N/A, not applicable.