Table 1.
Demographical and clinical characteristics of the cohort.
| White | Black | P-value | |||
|---|---|---|---|---|---|
| N | % | N | % | ||
| All | 31,947 | (89.1) | 3,903 | (10.9) | |
| Age | <0.001 | ||||
| <35 | 2,497 | (7.8) | 531 | (13.6) | |
| 35–39 | 4,330 | (13.6) | 609 | (15.6) | |
| 40–44 | 8,865 | (27.7) | 1,125 | (28.8) | |
| 45–49 | 16,255 | (50.9) | 1,638 | (42.0) | |
| Year of diagnosis | <0.001 | ||||
| 1998 | 1,750 | (5.5) | 150 | (3.8) | |
| 1999 | 1,781 | (5.6) | 142 | (3.6) | |
| 2000 | 1,839 | (5.8) | 173 | (4.4) | |
| 2001 | 2,001 | (6.3) | 229 | (5.9) | |
| 2002 | 1,977 | (6.2) | 234 | (6.0) | |
| 2003 | 2,139 | (6.7) | 238 | (6.1) | |
| 2004 | 2,120 | (6.6) | 253 | (6.5) | |
| 2005 | 2,253 | (7.1) | 262 | (6.7) | |
| 2006 | 2,314 | (7.2) | 266 | (6.8) | |
| 2007 | 2,181 | (6.8) | 257 | (6.6) | |
| 2008 | 2,240 | (7.0) | 310 | (7.9) | |
| 2009 | 2,330 | (7.3) | 346 | (8.9) | |
| 2010 | 2,384 | (7.5) | 324 | (8.3) | |
| 2011 | 2,315 | (7.2) | 375 | (9.6) | |
| 2012 | 2,323 | (7.3) | 344 | (8.8) | |
| Insurance status | <0.001 | ||||
| Private | 25,527 | (79.9) | 2,534 | (64.9) | |
| Medicare | 1,508 | (4.7) | 255 | (6.5) | |
| Medicaid | 2,199 | (6.9) | 549 | (14.1) | |
| Other government/unknown | 1,042 | (3.3) | 144 | (3.7) | |
| Uninsured | 1,671 | (5.2) | 421 | (10.8) | |
| Income | <0.001 | ||||
| <$38,000 | 4,543 | (14.2) | 1,566 | (40.1) | |
| $38,000–$47,999 | 7,640 | (23.9) | 860 | (22.0) | |
| $48,000–$62,999 | 8,928 | (27.9) | 789 | (20.2) | |
| $63,000+ | 10,106 | (31.6) | 571 | (14.6) | |
| Unknown | 730 | (2.3) | 117 | (3.0) | |
| Location | <0.001 | ||||
| Metropolitan | 25,162 | (78.8) | 3,405 | (87.2) | |
| Urban | 4,890 | (15.3) | 292 | (7.5) | |
| Rural | 522 | (1.6) | 46 | (1.2) | |
| Unknown | 1,373 | (4.3) | 160 | (4.1) | |
| Charlson/Deyo comorbidity score | <0.001 | ||||
| 0 | 18,127 | (56.7) | 2,314 | (59.3) | |
| 1 | 3,801 | (11.9) | 539 | (13.8) | |
| ≥2 | 671 | (2.1) | 122 | (3.1) | |
| Unknown | 9,348 | (29.3) | 928 | (23.8) | |
| Facility type | <0.001 | ||||
| Community cancer | 2,689 | (8.4) | 272 | (7.0) | |
| Comprehensive community cancer | 16,872 | (52.8) | 1,652 | (42.3) | |
| Academic/research | 12,358 | (38.7) | 1,974 | (50.6) | |
| Other | 28 | (0.1) | 5 | (0.1) | |
| Facility region | <0.001 | ||||
| Eastern | 6,845 | (21.4) | 660 | (16.9) | |
| Midwest | 11,740 | (36.7) | 1,234 | (31.6) | |
| South | 8,402 | (26.3) | 1,787 | (45.8) | |
| West | 4,960 | (15.5) | 222 | (5.7) | |
| Stage | <0.001 | ||||
| IA | 15,764 | (49.3) | 1,559 | (39.9) | |
| IB | 1,418 | (4.4) | 203 | (5.2) | |
| INOS | 1,470 | (4.6) | 156 | (4.0) | |
| II | 1,788 | (5.6) | 267 | (6.8) | |
| III | 1,639 | (5.1) | 208 | (5.3) | |
| IV | 747 | (2.3) | 141 | (3.6) | |
| Unknown | 9,121 | (28.6) | 1,369 | (35.1) | |
| Histology | <0.001 | ||||
| Endometrioid | 21,934 | (68.7) | 2,143 | (54.9) | |
| Serous | 374 | (1.2) | 55 | (1.4) | |
| Clear Cell | 198 | (0.6) | 26 | (0.7) | |
| Sarcoma | 3,593 | (11.2) | 1,082 | (27.7) | |
| Other/not otherwise specified | 5,848 | (18.3) | 597 | (15.3) | |
| Grade | <0.001 | ||||
| Well | 16,542 | (51.8) | 1,562 | (40.0) | |
| Moderate | 7,928 | (24.8) | 919 | (23.5) | |
| Poorly | 3,903 | (12.2) | 731 | (18.7) | |
| Unknown | 3,574 | (11.2) | 691 | (17.7) | |
| Regional nodes examined | 0.99 | ||||
| No | 14,444 | (45.2) | 1,767 | (45.3) | |
| Yes | 17,068 | (53.4) | 2,082 | (53.3) | |
| Unknown | 435 | (1.4) | 54 | (1.4) | |
| Radiation | <0.001 | ||||
| None | 26,122 | (81.8) | 3,112 | (79.7) | |
| External beam | 3,698 | (11.6) | 551 | (14.1) | |
| Brachytherapy | 2,030 | (6.4) | 234 | (6.0) | |
| Unknown | 97 | (0.3) | 6 | (0.2) | |
| Chemotherapy | <0.001 | ||||
| Yes | 3,865 | (12.1) | 657 | (16.8) | |
| No | 27,523 | (86.2) | 3,157 | (80.9) | |
| Unknown | 559 | (1.7) | 89 | (2.3) | |
P-values were from Chi-square tests.