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Table 2 Scenarios for leave one data set out validation

From: Meta-analysis of microarray data using a pathway-based approach identifies a 37-gene expression signature for systemic lupus erythematosus in human peripheral blood mononuclear cells

Scenario I Scenario II Scenario III Scenario IV
Data set 1 (a and b) Data set 2 (a and b) Data set 1 (a and b) Data set 1 (a and b)
Data set 2 (a and b) Data set 3 Data set 3 Data set 2 (a and b)
Data set 3 Data set 4 Data set 4 Data set 4
Test: Data set 4 Test: Data set 1 (a and b) Test: Data set 2 (a and b) Test: Data set 3