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Table 1 Population stratification configurations in simulations I and II

From: Robust methods for population stratification in genome wide association studies

   Case Control
   proportion proportion
S1 (moderate) (0.6,0.4)a (0.4,0.6)b
S2 (more extreme) (0.5,0.5) (0,1)
S3 (moderate) (0.45,0.35,0.20) (0.35,0.20,0.45)
S4 (more extreme) (0.33,0.67,0) (0,0.33,0.67)
  1. a The proportion of cases sampled from each subpopulation.
  2. b The proportion of controls sampled from each subpopulation.