Table 1 Clinical characteristics of METABRIC and OsloVal data sets.

NA, not available.

CategoriesMETABRICOsloVal
Cohort size1981184
Age, years (%)
  ≤5021.433.1
  50–6022.518.5
  ≥6056.148.4
Tumor size, cm (%)
  ≤243.338.0
  2–548.242.4
  ≥57.57.1
  NA1.012.5
Node status (%)
  Node negative52.349.5
  1–3 nodes31.421.2
  4–9 nodes11.49.8
  ≥10 nodes4.68.2
  NA0.311.3
ER status (%)
  ER+76.360.9
  ER23.739.1
PR status (%)
  PR+52.721.2
  PR47.378.8
HER2 copy status (%)
  HER2 amplification22.113.6
  HER2 neutral72.686.4
  HER2 loss5.00.0
  NA0.30.0
Tumor grade (%)
  18.66.5
  239.137.0
  348.130.4
  NA4.226.1