Table 1.
Distribution of patients’ characteristics by ethnicity
| Variables | Overall | Non‐Hispanic White | Hispanic | African American | Other | P‐value |
|---|---|---|---|---|---|---|
| N (%) | N (%) | N (%) | N (%) | N (%) | ||
| Baseline characteristics | ||||||
| Diagnosis age—mean (SD) | 58.15 (12.8) | 60.73 (12.52) | 55.87 (12.44) | 56.67 (13.87) | 59.06 (12.89) | <0.0001 |
| Diagnosis age (years) | ||||||
| ≤50 | 1034 (29.77) | 330 (22.92) | 569 (36.33) | 66 (32.67) | 60 (25.75) | <0.0001 |
| >50 | 2439 (70.23) | 1110 (77.08) | 997 (63.67) | 136 (67.33) | 173 (74.25) | |
| Gender | ||||||
| Male | 41 (1.18) | 19 (1.32) | 16 (1.02) | 2 (0.99) | 3 (1.29) | 0.882 |
| Female | 3432 (98.82) | 1421 (98.68) | 1550 (98.98) | 200 (99.01) | 230 (98.71) | |
| Site | ||||||
| El Paso, Texas | 1266 (36.45) | 40 (2.78) | 1083 (69.16) | 5 (2.48) | 138 (59.23) | <0.0001 |
| Loma Linda, California | 2207 (63.55) | 1400 (97.22) | 483 (30.84) | 197 (97.52) | 95 (40.77) | |
| Diagnosis | ||||||
| Invasive lobular | 264 (7.63) | 127 (8.82) | 113 (7.27) | 11 (5.45) | 11 (4.72) | <0.0001 |
| Invasive ductal and lobular | 294 (8.49) | 187 (12.99) | 75 (4.82) | 16 (7.92) | 12 (5.15) | |
| Other | 185 (5.34) | 78 (5.42) | 81 (5.21) | 16 (7.92) | 8 (3.43) | |
| Invasive ductal | 2719 (78.54) | 1048 (72.78) | 1286 (82.7) | 159 (78.71) | 202 (86.7) | |
| Treatment profile | ||||||
| Surgery type | ||||||
| Lumpectomy | 1801 (51.86) | 789 (54.79) | 782 (49.94) | 101 (50) | 116 (49.79) | 0.0002 |
| Mastectomy | 1240 (35.7) | 485 (33.68) | 588 (37.55) | 58 (28.71) | 95 (40.77) | |
| Unknown/none | 432 (12.44) | 166 (11.53) | 196 (12.52) | 43 (21.29) | 22 (9.44) | |
| Radiation | ||||||
| No | 1479 (44.03) | 685 (47.7) | 573 (39.35) | 97 (48.02) | 102 (43.78) | <0.0001 |
| Yes | 1880 (55.97) | 751 (52.3) | 883 (60.65) | 105 (51.98) | 131 (56.22) | |
| Chemotherapy | ||||||
| No | 1711 (50.94) | 885 (61.63) | 590 (40.52) | 103 (50.99) | 113 (48.5) | <0.0001 |
| Yes | 1648 (49.06) | 551 (38.37) | 866 (59.48) | 99 (49.01) | 120 (51.5) | |
| Tumor characteristics | ||||||
| Cancer stage | ||||||
| I | 1210 (35.17) | 601 (42.26) | 462 (29.23) | 64 (32.49) | 70 (30.43) | <0.0001 |
| II | 1004 (29.19) | 379 (26.65) | 500 (32.07) | 49 (24.87) | 67 (29.13) | |
| III | 448 (13.02) | 112 (7.88) | 264 (16.93) | 31 (15.74) | 39 (16.96) | |
| IV | 242 (7.02) | 76 (5.34) | 130 (8.34) | 19 (9.64) | 14 (6.09) | |
| 0 | 536 (15.58) | 254 (17.86) | 203 (13.02) | 34 (17.26) | 40 (17.39) | |
| Cancer stage | ||||||
| 3,4 | 690 (20.06) | 188 (13.22) | 394 (25.27) | 50 (25.38) | 53 (23.04) | <0.0001 |
| 0–2 | 2750 (79.94) | 1234 (86.78) | 1165 (74.73) | 147 (74.62) | 177 (79.96) | |
| ER | ||||||
| Positive | 2530 (72.85) | 1107 (76.88) | 1104 (70.5) | 137 (67.82) | 158 (67.81) | 0.0006 |
| Negative | 861 (24.79) | 298 (20.69) | 427 (27.27) | 60 (29.7) | 68 (29.18) | |
| Unknown | 82 (2.36) | 35 (2.43) | 35 (2.23) | 5 (2.48) | 7 (3.00) | |
| PR | ||||||
| Positive | 2277 (65.56) | 1029 (71.46) | 959 (61.24) | 133 (65.84) | 137 (58.8) | <0.0001 |
| Negative | 1117 (32.16) | 379 (26.32) | 573 (36.59) | 64 (31.68) | 88 (37.77) | |
| Unknown | 79 (2.27) | 32 (2.22) | 34 (2.17) | 5 (2.48) | 8 (3.43) | |
| HER2 | ||||||
| Positive | 632 (18.2) | 206 (14.31) | 184 (11.75) | 32 (15.84) | 24 (10.3) | 0.0002 |
| Negative | 2694 (77.57) | 1195 (82.99) | 1288 (82.25) | 165 (81.68) | 196 (84.12) | |
| Unknown | 147 (4.23) | 39 (2.71) | 94 (6) | 5 (2.48) | 13 (5.58) | |
| ER+, and/or PR+, HER2/neu‐ | ||||||
| Yes | 2237 (64.41) | 1025 (71.72) | 921 (58.81) | 126 (62.38) | 145 (62.23) | <0.0001 |
| No | 1087 (31.3) | 379 (26.32) | 550 (35.12) | 71 (35.15) | 75 (32.19) | |
| Unknown | 149 (4.29) | 25 (2.5) | 95 (6.07) | 5 (2.48) | 13 (5.58) | |
| ER‐, PR‐, and HER2/neu‐ | ||||||
| Yes | 457 (13.16) | 122 (8.47) | 268 (17.11) | 28 (13.86) | 35 (15.02) | <0.0001 |
| No | 2864 (82.46) | 1279 (88.82) | 1203 (76.82) | 169 (83.66) | 185 (79.4) | |
| Unknown | 152 (4.38) | 39 (2.71) | 95 (6.07) | 5 (2.48) | 13 (5.58) | |
| ER‐ and PR‐ and HER2/neu+ | ||||||
| Yes | 178 (5.13) | 51 (3.54) | 99 (6.32) | 11 (5.45) | 16 (6.87) | 0.0001 |
| No | 3143 (90.5) | 1350 (93.75) | 1372 (87.61) | 186 (92.08) | 204 (87.55) | |
| Unknown | 152 (4.38) | 39 (2.71) | 95 (6.07) | 5 (2.48) | 13 (5.58) | |