Research Article
Survival Benefit of Adjuvant Radiation Therapy for Gastric Cancer following Gastrectomy and Extended Lymphadenectomy
Table 1
Patient characteristics.
| | No XRT | XRT | value | | | % | | % |
| | 11852 | 100 | 3208 | 100 | | Age | | | | | | ≤60 | 2344 | 20 | 1286 | 40 | <0.001 | >60 | 9508 | 80 | 1922 | 60 | Sex | | | | | | Male | 7452 | 63 | 2234 | 70 | <0.001 | Female | 4400 | 37 | 974 | 30 | Race | | | | | | White | 7926 | 67 | 2187 | 68 | | Black | 1364 | 12 | 368 | 11 |
0.284 | Other | 2562 | 22 | 653 | 20 | | LN dissection | | | | | | <15 nodes | 7731 | 67 | 1823 | 58 | | 15–25 nodes | 2633 | 23 | 912 | 29 |
<0.001 | >25 nodes | 1141 | 10 | 424 | 13 | | Grade | | | | | | I | 820 | 7 | 86 | 3 | | II | 4213 | 36 | 919 | 29 |
<0.001 | III | 6583 | 56 | 2129 | 66 | | IV | 236 | 2 | 74 | 2 | | Stage | | | | | | IA | 2207 | 19 | 31 | 1 | | IB | 2717 | 23 | 503 | 16 | | II | 3146 | 27 | 1183 | 37 |
<0.001 | IIIA | 2041 | 17 | 817 | 25 | | IIIB | 395 | 3 | 212 | 7 | | IV (M0) | 1346 | 11 | 462 | 14 | |
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