Table 1.
Demographic and Clinical Characteristics of 2795 Breast Cancer Patients in the ChiMEC Cohort by Race and Ethnicity
| Factor | White (n= 1521) | Black (n=1067) | Asian (n=121) | Hispanic (n=86) | p-value |
|---|---|---|---|---|---|
| Age at diagnosis, mean (sd) | 55.5 (12.8) | 59.6 (14.2) | 50.7 (12.7) | 53.4 (14.8) | <0.001 |
| Year at diagnosis, mean (sd) | 2011.4 (4.7) | 2010.6 (4.8) | 2011.9 (4.2) | 2012.1 (4.5) | <0.001 |
| Breast Cancer Subtype | <0.001 | ||||
| HR+/Her2− | 1062 (69.8%) | 613 (57.5%) | 81 (66.9%) | 59 (68.6%) | |
| HR+/Her2+ | 157 (10.3%) | 102 (9.5%) | 21 (17.4%) | 8 (9.3%) | |
| HR−/Her2+ | 88 (5.8%) | 77 (7.2%) | 8 (6.6%) | 3 (3.5%) | |
| TNBC | 214 (14.1%) | 275 (25.8%) | 11 (9.1%) | 16 (18.6%) | |
| PR Status among HR+ patients | 0.140 | ||||
| PR− | 198 (16.2%) | 150 (21.0%) | 15 (14.7%) | 10 (14.9%) | |
| PR+ | 1020 (83.7%) | 563 (78.7%) | 87 (85.3%) | 57 (85.1%) | |
| missing | 1 (0.1%) | 2 (0.3%) | 0 (0.0%) | 0 (0.0%) | |
| Tumor Grade | <0.001 | ||||
| 1 | 224 (14.7%) | 123 (11.5%) | 16 (13.2%) | 11 (12.8%) | |
| 2 | 655 (43.1%) | 413 (38.7%) | 53 (43.8%) | 35 (40.7%) | |
| 3 | 462 (30.4%) | 434 (40.7%) | 38 (31.4%) | 30 (34.9%) | |
| missing | 180 (11.8%) | 97 (9.1%) | 14 (11.6%) | 10 (11.6%) | |
| Tumor Stage | 0.021 | ||||
| 1 | 718 (47.2%) | 432 (40.5%) | 52 (43.0%) | 33 (38.4%) | |
| 2 | 595 (39.1%) | 453 (42.5%) | 53 (43.8%) | 40 (46.5%) | |
| 3 | 208 (13.7%) | 182 (17.0%) | 16 (13.2%) | 13 (15.1%) | |
| Carlson Comorbidity Index | <0.001 | ||||
| 0 | 1270 (83.5%) | 747 (70.0%) | 108 (89.3%) | 68 (79.0%) | |
| 1 | 104 (6.8%) | 122 (11.4%) | 9 (7.4%) | 6 (7.0%) | |
| >2 | 147 (9.7%) | 198 (18.6%) | 4 (3.3%) | 12 (14.0%) | |
| Type of surgery | <0.001 | ||||
| Lumpectomy | 766 (50.4%) | 573 (53.7%) | 44 (36.4%) | 41 (47.7%) | |
| Mastectomy | 723 (47.5%) | 430 (40.3%) | 74 (61.2%) | 43 (50.0%) | |
| No or unknwon | 32 (2.1%) | 64 (6.0%) | 3 (2.5%) | 2 (2.3%) | |
| Chemotherapy | 0.26 | ||||
| No | 718 (47.2%) | 468 (43.9%) | 52 (43.0%) | 35 (40.7%) | |
| Yes | 803 (52.8%) | 599 (56.1%) | 69 (57.0%) | 51 (59.3%) | |
| Radiotherapy | 0.15 | ||||
| No | 559 (36.8%) | 388 (36.4%) | 55 (45.5%) | 27 (31.4%) | |
| Yes | 950 (62.4%) | 678 (63.5%) | 65 (53.7%) | 59 (68.6%) | |
| missing | 12 (0.8%) | 1 (0.1%) | 1 (0.8%) | 0 (0.0%) | |
| Insurance | <0.001 | ||||
| Uninsured | 6 (0.4%) | 4 (0.4%) | 0 (0.0%) | 1 (1.2%) | |
| Any Medicaid | 42 (2.8%) | 260 (24.4%) | 5 (4.1%) | 10 (11.6%) | |
| Medicare | 377 (24.8%) | 374 (35.1%) | 19 (15.7%) | 20 (23.3%) | |
| Private Insurance | 1056 (69.4%) | 396 (37.1%) | 94 (77.7%) | 53 (61.6%) | |
| Other/Unknown | 40 (2.6%) | 33 (3.0%) | 3 (2.5%) | 2 (2.3%) | |