PMC full text:
Breast Cancer Res Treat. Author manuscript; available in PMC 2015 Mar 4.
Published in final edited form as:
Breast Cancer Res Treat. 2011 Jun; 127(2): 471–478.
Published online 2010 Oct 19. doi: 10.1007/s10549-010-1173-8Table 2
Characteristics of Asian women in California diagnosed with incident, invasive breast cancer from 2002 to 2007 with immunohistochemical data for ER, PR, and HER2 (n = 8,140)
| HR+/HER2− | HER2+ | Triple-negative | χ2 P | |
|---|---|---|---|---|
| n = 4,961 | n = 2231 | n = 948 | ||
| Age at diagnosis, years (mean) | 57.3 | 54.9 | 55.2 | |
| Age at diagnosis, grouped years | ||||
| 0–39 | 345 (52%) | 216 (32%) | 107 (16%) | <0.0001 |
| 40–49 | 1272 (60%) | 607 (29%) | 238 (11%) | |
| 50+ | 3344 (62%) | 1408 (26%) | 603 (11%) | |
| AJCC stage at diagnosis | ||||
| I | 2404 (68%) | 809 (23%) | 324 (9%) | <0.0001 |
| II | 1853 (58%) | 922 (29%) | 428 (13%) | |
| III | 450 (51%) | 310 (35%) | 120 (14%) | |
| IV | 137 (47%) | 112 (39%) | 41 (14%) | |
| Unknown | 117 (51%) | 78 (34%) | 35 (15%) | |
| SES quintilea | ||||
| 1st | 316 (54%) | 200 (34%) | 66 (11%) | <0.0001 |
| 2nd | 640 (56%) | 356 (31%) | 139(12%) | |
| 3rd | 946 (61%) | 427 (27%) | 184(12%) | |
| 4th | 1310 (61%) | 591 (27%) | 251 (12%) | |
| 5th | 1749 (64%) | 657 (24%) | 308 (11%) | |
| Grade | ||||
| I | 1162 (87%) | 142 (11%) | 34 (3%) | <0.0001 |
| II | 2389 (72%) | 759 (23%) | 178 (5%) | |
| III | 1111 (38%) | 1140 (39%) | 662 (23%) | |
| Other/unknown | 299 (53%) | 190 (34%) | 74 (13%) | |
| Diagnosis year | ||||
| 2002 | 615 (59%) | 289 (28%) | 143 (14%) | 0.01 |
| 2003 | 674 (59%) | 316 (28%) | 157(14%) | |
| 2004 | 779 (61%) | 338 (26%) | 160(13%) | |
| 2005 | 804 (60%) | 387 (29%) | 152 (11%) | |
| 2006 | 962 (62%) | 434 (28%) | 159 (10%) | |
| 2007 | 1127 (64%) | 467 (26%) | 177 (10%) | |
| Histology | ||||
| Ductal | 3533 (58%) | 1840 (30%) | 744 (12%) | |
| Lobular | 289 (85%) | 39 (11%) | 13 (4%) | <0.0001 |
| Mixed/other | 1139 (68%) | 352 (21%) | 191 (11%) | |
| Nativity | ||||
| US-born | 1182 (66%) | 405 (23%) | 193 (11%) | |
| Foreign-born | 3779 (59%) | 1826 (29%) | 755 (12%) | <0.0001 |
| Hospital status | ||||
| Public | 3555 (62%) ‘ | 1473 (26%) | 686 (12%) | |
| Private | 583 (57%) | 348 (34%) | 96 (9%) | <0.0001 |
| Unknown | 823 (59%) | 410 (29%) | 166 (12%) |
HR+/HER2− = ER+ and/or PR+, HER2−; HER2+ = ER±, PR±, and HER2+; Triple-negative = ER−, PR−, and HER2−
aNeighborhood-level socioeconomic status (see “methods”): 1st quintile represents those with the lowest SES and the 5th quintile represents those with the highest SES