Article
Impact of population substructure on trend tests for genetic case-control association studies.
Biometrics - 1 Mar 2010
Zheng Gang, Li Zhaohai, Gail Mitchell H, Gastwirth Joseph L
Abstract excerpt
Hidden population substructure in case-control data has the potential to distort the performance of Cochran-Armitage trend tests (CATTs) for genetic associations. Three possible scenarios that may arise are investigated here: (i) heterogeneity of genotype frequencies across unidentified subpopulations (PSI), (ii) heterogeneity of genotype frequencies and disease risk across unidentified subpopulations (PSII), and...
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