1. Comorbidity and confounding in end-stage renal disease
Stephen L. Seliger 
Kidney International 
Volume 77, Issue 2, Pages (January 2010)
DOI: /ki
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2. Figure 1
Relationship of confounder with exposure and outcome. A confounder (e.g., comorbidity) is related to both the exposure and the outcome of interest.
Kidney International  , 83-85DOI: ( /ki )
Copyright © 2010 International Society of Nephrology Terms and Conditions