HED 343 Observational Studies

HED 343 Observational Studies - Observational Studies the...

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Observational Studies the occurrence of disease in people who are already segregated into groups on the basis of exposure simply studies people who have already self- selected themselves into different exposure groups
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Observational Studies Most epidemiological studies are observational Based on the observation of certain exposure factors and the possible association with the development of disease or some other health outcome.
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Four Major Types of Observational Studies Ecologic Cross-sectional Case-control Cohort studies
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Ecologic Studies also referred to as Aggregate studies populations or groups of people are the unit of analysis usually defined by geographic boundaries
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Ecologic Studies usually correlate the prevalence of specific exposure factors in populations with the occurrence of disease or some other health outcome in the same populations.
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Simple speculations about why disease (or other health outcomes) occur at different
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HED 343 Observational Studies - Observational Studies the...

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