1. Study Designs in Patient-Oriented Research
Chirag R. Parikh, MD, PhD, John Concato, MD, MS, MPH 
American Journal of Kidney Diseases 
Volume 47, Issue 2, Pages (February 2006)
DOI: /j.ajkd
Copyright © 2006 National Kidney Foundation, Inc. Terms and Conditions

2. Fig 1 Overview of research architecture.
American Journal of Kidney Diseases  , DOI: ( /j.ajkd )
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3. Fig 2 Cross-sectional study.
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4. Fig 3
Cohort study.
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5. Fig 4 Case-control study.
American Journal of Kidney Diseases  , DOI: ( /j.ajkd )
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6. Fig 5 Randomized controlled trial.
American Journal of Kidney Diseases  , DOI: ( /j.ajkd )
Copyright © 2006 National Kidney Foundation, Inc. Terms and Conditions