Table 1 Characteristics of patients in the training and testing sets. P values correspond to measures computed using Wilcoxon rank-sum tests performed to compare the training and testing cohorts
Characteristics | Cohort | Â | |
|---|---|---|---|
Training | Testing | Pvalue | |
n | 222 | 56 | Â |
Age, mean ± SD, years | 51.8 (11.8) | 51.3 (11.8) | 0.90 |
Pathologic response (%) | Â | Â | 0.50 |
 pCR | 61 (27.5) | 13 (23.2) |  |
 no-pCR | 161 (72.5) | 43 (76.8) |  |
Histology, no (%) | Â | Â | 0.90 |
 Invasive ductal | 203 (91.4) | 51 (91.1) |  |
 Invasive lobular | 8 (3.6) | 3 (5.4) |  |
 Mix | 5 (2.3) | 0 (0) |  |
 Invasive NOS | 6 (2.7) | 2 (3.5) |  |
Molecular subtype, no (%) | Â | Â | 0.40 |
 HR+HER2− | 76 (34.2) | 22 (39.3) |  |
 HR+HER2+ | 52 (23.4) | 9 (16.1) |  |
 HR−HER2+ | 36 (16.2) | 8 (14.3) |  |
 Triple negative | 58 (26.2) | 17 (30.3) |  |