Characteristic | Categories | Number | Percent (%)
Ethnicity | Caucasian | 81 | 81
| African American | 15 | 15
| Hispanic | 3 | 3
| Asian | 1 | 1
Tumor Stage at Diagnosis | Stage 0 | 4 | 4
| Stage I | 21 | 21
| Stage II | 44 | 44
| Stage III | 17 | 17
| Stage IV | 11 | 11
| Unknown | 3 | 3
Menstrual Status | Premenopausal | 53 | 53
| Postmenopausal | 37 | 37
| Perimenopausal | 4 | 4
| Unknown | 6 | 6
ER/PR status | ER + PR + | 48 | 48
| ER + PR - | 11 | 11
| ER - PR + | 1 | 1
| ER - PR - | 36 | 36
| Unknown | 4 | 4
Tamoxifen/Arimidex use | Neither | 50 | 50
| Tamoxifen only | 29 | 29
| Arimidex only | 7 | 7
| Both | 11 | 11
| Unknown | 3 | 3