Table 4. Characteristics of epithelial ovarian cancer based on histology patterns of synchronous endometrial cancer.
| Group 1 | Group 2 | Group 3 | Group 4 | P-value | |
|---|---|---|---|---|---|
| Ovarian cancer | Endometrioid | Endometrioid | Non-endometrioid | Non-endometrioid | |
| Synchronous endometrial cancer | Endometrioid | Non-endometrioid | Endometrioid | Non-endometrioid | |
| Number | 1,847 (46.9%) | 222 (5.6%) | 1,227 (31.1%) | 644 (16.3%) | |
| Age (y) | 52.0 (±11.2) | 53.2 (±11.8) | 58.6 (±12.0) | 61.3 (±12.0) | <0.001 |
| ≥60 | 393 (28.9%) | 63 (4.6%) | 547 (40.2%) | 357 (26.3%) | |
| 50-59 | 627 (49.9%) | 65 (5.2%) | 383 (30.5%) | 181 (14.4%) | |
| 40-49 | 630 (61.3%) | 70 (6.8%) | 243 (23.6%) | 85 (8.3%) | |
| < 40 | 197 (66.6%) | 24 (8.1%) | 54 (18.2%) | 21 (7.1%) | |
| Ethnicity | <0.001 | ||||
| White | 1,473 (46.7%) | 178 (5.6%) | 1,007 (31.9%) | 498 (15.8%) | |
| Black | 47 (29.7%) | 8 (5.1%) | 54 (34.2%) | 49 (31.0%) | |
| Hispanic | 142 (49.1%) | 20 (6.9%) | 75 (26.0%) | 52 (18.0%) | |
| Asian | 148 (55.8%) | 11 (4.2%) | 72 (27.2%) | 34 (12.8%) | |
| Others | 37 (51.4%) | 5 (6.9%) | 19 (26.4%) | 11 (15.3%) | |
| Marital status | <0.001 | ||||
| Single | 519 (54.0%) | 47 (4.9%) | 266 (27.7%) | 129 (13.4%) | |
| Married | 973 (46.8%) | 135 (6.5%) | 652 (31.4%) | 318 (15.3%) | |
| Others | 355 (39.4%) | 40 (4.4%) | 309 (34.3%) | 197 (21.9%) | |
| Registry Area | <0.001 | ||||
| West | 998 (50.0%) | 122 (6.1%) | 562 (28.1%) | 315 (15.8%) | |
| Central | 384 (43.3%) | 52 (5.9%) | 289 (32.6%) | 161 (18.2%) | |
| East | 465 (44.0%) | 48 (4.5%) | 376 (35.6%) | 168 (15.9%) | |
| Year at diagnosis | <0.001 | ||||
| 1973-1979 | 61 (24.4%) | 25 (10.0%) | 110 (44.0%) | 54 (21.6%) | |
| 1980-1989 | 165 (34.7%) | 48 (10.1%) | 173 (36.4%) | 89 (18.7%) | |
| 1990-1999 | 334 (49.0%) | 50 (7.3%) | 203 (29.8%) | 94 (13.8%) | |
| 2000-2009 | 901 (51.1%) | 64 (3.6%) | 534 (30.3%) | 265 (15.0%) | |
| 2010-2013 | 386 (50.1%) | 35 (4.5%) | 207 (26.9%) | 142 (18.4%) | |
| Stage | <0.001 | ||||
| I | 1,132 (57.4%) | 125 (6.3%) | 506 (25.7%) | 209 (10.6%) | |
| II | 295 (53.9%) | 29 (5.3%) | 155 (28.3%) | 68 (12.4%) | |
| III | 284 (32.3%) | 45 (5.1%) | 341 (38.8%) | 208 (23.7%) | |
| IV | 102 (24.1%) | 20 (4.7%) | 176 (41.5%) | 126 (29.7%) | |
| Unknown | 34 (28.6%) | 3 (2.5%) | 49 (41.2%) | 33 (27.7%) | |
| Grade | <0.001 | ||||
| 1 | 604 (63.6%) | 69 (7.3%) | 191 (20.1%) | 86 (9.1%) | |
| 2 | 688 (59.3%) | 69 (5.9%) | 284 (24.5%) | 119 (10.3%) | |
| 3 | 261 (28.6%) | 30 (3.3%) | 379 (41.5%) | 243 (26.6%) | |
| Unknown | 294 (32.1%) | 54 (5.9%) | 373 (40.7%) | 196 (21.4%) | |
| Tumor size (cm) | <0.001 | ||||
| < 10 | 640 (46.3%) | 83 (6.0%) | 417 (30.2%) | 243 (17.6%) | |
| ≥ 10 | 550 (58.0%) | 43 (4.5%) | 247 (26.1%) | 108 (11.4%) | |
| Unknown | 657 (40.8%) | 96 (6.0%) | 563 (35.0%) | 293 (18.2%) |
Combination patterns of epithelial ovarian cancer and synchronous endometrial cancer are displayed. Number (%) per row or mean (±standard deviation) are shown. Chi-square test for P-values. Significant P-values are emboldened.