Key concepts in clinical epidemiology: collider-conditioning bias

Affiliations

• ¹ Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, CA, USA.
• ² Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, CA, USA; Department of Epidemiology, School of Public Health, Boston University, Boston, MA, USA.