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Table 1 Dataset characteristics – demographic and cancer subtype distribution in each risk category for the cases from the 3 different institutions considered in this study

From: Quantitative nuclear histomorphometry predicts oncotype DX risk categories for early stage ER+ breast cancer

Parameters    
Oncotype DX Risk Category Low (< 18) Intermediate (> 18, ≤30) High(> 30)
No. of Patients (N = 125) 66 (53%) 44 (35%) 15 (12%)
Age 20–77 25–70 45–70
Sex
 Female 66 (53%) 43 (34%) 15 (12%)
 Male 0 (0%) 1 (1%) 0 (0%)
Patient Ethnicity
 White 33 (26%) 23 (18%) 5 (5%)
 African American 3 (2%) 2 (2%) 2 (2%)
 Asian 1 (1%) 2 (2%) 1 (1%)
 Unknown 22 (18%) 17 (14%) 7(6%)
PR Status
 Positive 64 (51%) 39 (31%) 10 (8%)
 Negative 2 (2%) 3 (2%) 5 (4%)
 Unknown 0 (0%) 2 (2%) 0 (0%)
HER2 Status
 Positive 0 (0%) 1 (1%) 0 (0%)
 Negative 66 (53%) 42 (34%) 15 (12%)
 Unknown 0 (0%) 1 (1%) 0 (0%)
Histologic Tumor Grade
 Low (4, 5) 10 (8%) 14 (11%) 0 (0%)
 Moderate (6, 7) 48 (38%) 24 (19%) 4 (3%)
 High (8, 9) 8 (6%) 6 (5%) 11 (9%)
Tumor Type
 Ductal 53 (42%) 37 (30%) 14 (11%)
 Ductal With Lobular Features 9 (7%) 3 (2%) 1 (1%)
 Ductal with Mucinous Features 1 (1%) 2 (2%) 0 (0%)
 Mixed 3 (2%) 2 (2%) 0 (0%)