A Robust Example of Collider Bias in a Genetic Association Study

Affiliations

• ¹ MRC Epidemiology Unit, Institute of Metabolic Science, University of Cambridge, Box 285, Hills Road, Cambridge CB2 0QQ, UK.
• ² Department of Epidemiology, Harvard T.H. Chan School of Public Health, Harvard University, Boston, MA 02115, USA; Program in Medical and Population Genetics, Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA.
• ³ MRC Epidemiology Unit, Institute of Metabolic Science, University of Cambridge, Box 285, Hills Road, Cambridge CB2 0QQ, UK. Electronic address: john.perry@mrc-epid.cam.ac.uk.