Table 1.

Subject demographic and clinical characteristics

CharacteristicsN = 75%
Age at diagnosis, y
 30–391621
 40–492838
 50–592229
 60+912
Race
 Non-Hispanic white6384
 African American79
 Asian/Pacific Islander57
Histology
 Ductal6992
 Lobular68
Clinical tumor classification
 T123
 T21621
 T34357
 T41419
Clinical lymph node classification
 N01419
 N14661
 N21317
 N323
Tumor size, cm
 0–1.934
 2–53851
 >53445
ER
 Positive4155
 Negative3445
PR
 Positive3445
 Negative4155
HER-2/neua
 Positive1926
 Negative5574
Ki-67 proliferative indexb
 Other than high1423
 Highc4877
Menopausal status
 Pre4763
 Post2837

aOncogene, unknown, n = 1.

bUnknown, n = 13 (17%).

cGreater than 20%.