Slide 1Measures of Impact 18 th EPIET/EUPHEM Introductory Course September-October 2012 Lazareto, Menorca, Spain Ioannis Karagiannis Slide 2 2 Objectives To define measures…

Slide 1Bias Sam Bracebridge Slide 2 By the end of the lecture fellows will be able to Define bias Identify different types of bias Explain how bias affects risk estimates…

Slide 1Matching in case control studies Yvan Hutin Slide 2 Cases of acute hepatitis (E) by residence, Girdharnagar, Gujarat, India, 2008 Attack rate per 1,000 > 40 30-39…

Slide 1Measures of Impact Lazareto, Menorca, Spain Sept 2006 L Petersen 1999, T Grein 2000-2004, M Valenciano 2005-2006 Slide 2 You are in charge of health prevention Want…

Slide 1Variants of the case- control design Katharina Alpers EPIET introductory course, Menorca (Spain), 10 October, 2011 Slide 2 2 Overview Design of case-control studies…

Slide 1Case-control designs in the study of common diseases & alternative designs JC Desenclos, F Simón, A Moren EPIET, Menorca, Spain, October 9, 2006 Slide 2 Case-control…

Slide 1 Slide 2 Epidemiological studies Two types Observation Experiment Slide 3 Exposed Not exposed Disease occurrence Unethical to perform experiments on people if exposure…

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Slide 1Bias M.Valenciano, 2006 A. Bosman, 2005 T. Grein, 2001- 2004 Slide 2 Every epidemiological study should be viewed as a measurement exercise Kenneth J. Rothman, 2002…

Slide 1Choosing a reference group James Stuart EPIET, Mahon September 2006 Slide 2 Objectives Define source population Understand importance of representativeness Describe…