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Table 1 Characteristics of three scenarios for the TCGA-BRCA dataset. The distributions of ages and tumor stages were balanced

From: Flimma: a federated and privacy-aware tool for differential gene expression analysis

 

Cohort sizes

Frequency of basal subtype

Frequency of LumA subtype

 

Cohort 1

Cohort 2

Cohort 3

Cohort 1

Cohort 2

Cohort 3

Cohort 1

Cohort 2

Cohort 3

No imbalance

283

283

284

0.20

0.20

0.20

0.57

0.57

0.58

Mild imbalance

121

242

487

0.10

0.30

0.17

0.40

0.50

0.66

Strong imbalance

65

196

589

0.25

0.50

0.09

0.14

0.50

0.65