Table 1.
Baseline characteristics for patients with PrORT/no‐PrORT before PSM
| Variables | Radiation (%) | None (%) | P |
|---|---|---|---|
| Age | <0.001 | ||
| <65 | 306 (62.1) | 1078 (40.3) | |
| ≥65 | 187 (37.9) | 1597 (59.7) | |
| Race | 0.457 | ||
| White | 408 (82.8) | 2203 (82.4) | |
| Black | 53 (10.8) | 260 (9.7) | |
| Other | 32 (6.5) | 212 (7.9) | |
| Sex | 0.022 | ||
| Male | 272 (55.2) | 1326 (49.6) | |
| Female | 221 (44.8) | 1349 (50.4) | |
| Grade | <0.001 | ||
| I‐II | 171 (34.7) | 1293 (48.3) | |
| III‐IV | 322 (65.3) | 1382 (51.7) | |
| Pathology | 0.003 | ||
| Squamous | 149 (30.2) | 658 (24.6) | |
| Adenocarcinoma | 232 (47.1) | 1478 (55.3) | |
| Others | 112 (22.7) | 539 (20.1) | |
| T stage | <0.001 | ||
| T1 | 99 (20.1) | 775 (29.0) | |
| T2 | 302 (61.3) | 1695 (63.4) | |
| T3 | 92 (18.7) | 205 (7.7) | |