Table. Participant Baseline Characteristics.
| Characteristic | Participants, No. (%) | ||||
|---|---|---|---|---|---|
| Hispanic (n = 436) | Non-Hispanic Black (n = 871) | Non-Hispanic White (n = 7889) | Non-Hispanic other (n = 283)a | Total (N = 9479) | |
| Trial | |||||
| CALGB 40101 | 206 (47.2) | 357 (41.0) | 2865 (36.3) | 95 (33.6) | 3523 (37.2) |
| CALGB 49907 | 30 (6.9) | 59 (6.8) | 460 (5.8) | 10 (3.5) | 559 (5.9) |
| CALGB 9741 | 80 (18.3) | 216 (24.8) | 1625 (20.6) | 39 (13.8) | 1960 (20.7) |
| NCCTG N9831 | 120 (27.5) | 239 (27.4) | 2939 (37.3) | 139 (49.1) | 3437 (36.3) |
| Age category, y | |||||
| <50 | 212 (48.6) | 424 (48.7) | 3285 (41.6) | 138 (48.8) | 4059 (42.8) |
| 50 to <65 | 162 (37.2) | 335 (38.5) | 3385 (42.9) | 109 (38.5) | 3991 (42.1) |
| ≥65 | 62 (14.2) | 112 (12.9) | 1219 (15.5) | 36 (12.7) | 1429 (15.1) |
| Stage | |||||
| I | 113 (26.2) | 177 (20.5) | 1798 (22.9) | 52 (18.7) | 2140 (22.7) |
| II | 268 (62.2) | 533 (61.8) | 4823 (61.5) | 186 (66.9) | 5810 (61.7) |
| III | 50 (11.6) | 152 (17.6) | 1225 (15.6) | 40 (14.4) | 1467 (15.6) |
| Missing | 5 | 9 | 43 | 5 | 62 |
| Breast cancer subtype | |||||
| ERBB2+ | 172 (43.4) | 320 (41.6) | 3376 (47.3) | 152 (59.1) | 4020 (47.0) |
| HR+/ERBB2− | 141 (35.6) | 252 (32.8) | 2711 (38.0) | 72 (28.0) | 3176 (37.1) |
| HR−/ERBB2− | 83 (21.0) | 197 (25.6) | 1049 (14.7) | 33 (12.8) | 1362 (15.9) |
| Missing | 40 | 102 | 753 | 26 | 921 |
| BMI categoryb | |||||
| Underweight | 4 (0.9) | 8 (0.9) | 129 (1.7) | 5 (1.8) | 146 (1.6) |
| Healthy weight | 92 (21.3) | 112 (13.0) | 2315 (29.8) | 115 (40.8) | 2634 (28.2) |
| Overweight | 146 (33.9) | 228 (26.5) | 2328 (29.9) | 96 (34.0) | 2798 (29.9) |
| Obesity | 189 (43.9) | 511 (59.5) | 3008 (38.7) | 66 (23.4) | 3774 (40.4) |
| Missing | 5 | 12 | 109 | 1 | 127 |
Abbreviations: −, negative; +, positive; BMI, body mass index (calculated as weight in kilograms divided by height in meters squared); CALGB, Cancer and Leukemia Group B; HR, hormone receptor; NCCTG, North Central Cancer Treatment Group.
a
Other race and ethnicity includes American Indian or Alaska Native, Asian, Native Hawaiian or Other Pacific Islander.
b
BMI groups were determined based on Center for Disease Control and Prevention definitions of underweight, healthy weight, overweight, and obesity as follows: less than 18.5, 18.5 to less than 25.0, 25.0 to less than 30.0, and 30.0 or greater respectively.