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Cohort, case-control & cross- sectional studies Source: Alain Moren, EPIET Introductory courses Kostas Danis EPIET Introductory course Menorca, Spain 16/9-12/10/2012
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Epidemiological studies Two types Observation Experiment
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Main points to be covered Rate ratios Relationship between the type of ratio measure of association and study design How the odds ratio estimates other
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Main points to be covered Measures of association in case-control studies Prevalent controls design: odds ratio vs. relative risk and the rare disease
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Cohort study. What is a cohort? One of 10 divisions of a Roman legion Group of individuals – sharing same experience – followed up for specified period
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