Table 1. Patient Demographic and Clinical Characteristics.
| Characteristic | Patients, No. (%) (N = 455) |
|---|---|
| Age, median (range), y | 51.9 (25.2-76.4) |
| Gender | |
| Female | 452 (99) |
| Male | 3 (<1) |
| Race | |
| White | 393 (86) |
| Black | 49 (11) |
| Asian | 12 (2.6) |
| American Indian or Alaska Native | 1 (<1) |
| Ethnicity | |
| Hispanic | 23 (5) |
| Non-Hispanic | 403 (95) |
| Missing or unknown | 29 |
| Marital status | |
| Single, separated, divorced, or widowed | 122 (28) |
| Married or partnered | 302 (71) |
| Missing or unknown | 31 |
| Education status | |
| No college | 234 (55) |
| College or higher | 191 (45) |
| Missing or unknown | 30 |
| Menopausal status | |
| Postmenopausal | 250 (56) |
| Premenopausal or perimenopausal | 198 (44) |
| Missing, unknown, or male patient | 7 |
| ER/PR status | |
| ER and PR negative | 156 (34) |
| ER and PR positive | 299 (66) |
| Tumor size, cm | |
| ≤2 | 165 (36) |
| >2 | 290 (64) |
| Nodal status | |
| Negative | 125 (27) |
| Positive | 330 (73) |
| Histologic grade | |
| I | 39 (9) |
| II | 160 (36) |
| III | 245 (55) |
| Missing or unknown | 11 |
| Surgery | |
| BCSa | 195 (43) |
| Mastectomy | |
| Without radiation | 86 (19) |
| With radiation | 171 (38) |
| Missing | 3 |
| Axillary surgery | |
| SLNB | 86 (19) |
| ALND | 108 (24) |
| ALND and SLNB | 261 (57) |
Abbreviations: ALND, axillary lymph node dissection; BCS, breast conserving surgery; ER, estrogen receptor; PR, progesterone receptor; SLNB, sentinel lymph node biopsy.
a
Includes patients who received BCS with whole breast radiation (n = 184), BCS with partial breast irradiation (n = 3), and BCS without radiation (n = 8).