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What is efficacy?
Eric Matteson, MD
Mayo Clinic, Rochester, MN

Date Added: 06/26/13

In general what we mean by efficacy is how well a drug works or any other intervention that we might use for treatment of a disease. When we talk about efficacy of drugs used for treating rheumatoid arthritis, what we mean is, does that drug reduce swelling? Does it make a person feel better? Doe...
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Eric L. Matteson, MD, is chair for the Division of Rheumatology in the Department of Internal Medicine at Mayo Clinic. He has a joint appointment in the Division of Epidemiology in the Department of Health Sciences Research. Dr. Matteson received the MD degree from Friedrich-Alexander University at Erlangen-Nuremberg. He completed an internship and residency in internal medicine at Michigan State University and a fellowship at the University of Michigan. He further completed a fellowship at Mayo Graduate School of Medicine and received the M.P.H. degree in Public Health in Epidemiology from the University of North Carolina, Chapel Hill. As a clinician and an epidemiologist, Dr. Matteson is focused on studying rheumatoid arthritis, including clinical features, complications, outcomes, and treatments.
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