Table 1. Clinicopathologic characteristics of the cervical cancer patients with lymph node-positive cervical cancer stratified by postoperative radiotherapy.
| Variable | N | No RT (%) | RT (%) | P value |
|---|---|---|---|---|
| Year of diagnosis | ||||
| 1988–1992 | 212 | 53 (13.1) | 159 (8.5) | 0.020 |
| 1993–1997 | 329 | 62 (15.3) | 267 (14.3) | |
| 1998–2002 | 575 | 89 (21.9) | 486 (26.1) | |
| 2003–2010 | 1153 | 202 (49.8) | 951 (51.0) | |
| Race | ||||
| Black | 206 | 49 (12.1) | 157 (8.4) | 0.026 |
| White | 1798 | 303 (74.6) | 1495 (80.2) | |
| Other | 265 | 54(13.2) | 211 (11.3) | |
| Age (years) | ||||
| < 50 | 1559 | 266 (65.5) | 1293 (69.4) | 0.126 |
| ≥ 50 | 710 | 140 (34.5) | 570 (30.6) | |
| Tumor histology | ||||
| Squamous | 1518 | 271 (66.7) | 1247 (66.9) | 0.807 |
| Adenocarcinoma | 469 | 81 (20.0) | 388 (20.8) | |
| Other | 282 | 54 (13.3) | 228 (12.2) | |
| Grade (n = 2,072) | ||||
| Well-differentiated | 100 | 16 (4.5) | 84 (4.9) | 0.895 |
| Moderately-differentiated | 811 | 137 (38.5) | 674 (39.3) | |
| Poorly/undifferentiated | 1161 | 203 (57.0) | 958 (55.8) | |
| FIGO stage | ||||
| I | 1627 | 300 (73.9) | 1327 (71.2) | 0.280 |
| II | 642 | 106 (26.1) | 536 (28.8) | |
| LNR | ||||
| 0.01–0.16 | 1576 | 287 (70.7) | 1289 (69.2) | 0.552 |
| > 0.16 | 693 | 119 (29.3) | 574 (30.8) |
Abbreviations: RT, radiotherapy; FIGO, International Federation of Gynecology and Obstetrics; LNR, lymph node ratio.