Lec16AssociationtoCausation(Revised07)

Lec16AssociationtoCausation(Revised07) - Association to...

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Association to Causation
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Sequence of Studies Clinical observations Available data Case-control studies Cohort studies Randomized trials
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Types of Associations Real Spurious
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DEFINITIONS Observational study Causation Etiology Association Necessary Sufficient Your Assignment: Define these terms as they apply to epidemiology.
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Koch and Causation Postulates Why study association? Web of causation Do we need a better way?
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Twelve Criteria for Causation Cause distributed at same level Incidence much higher in exposed population Exposure more frequent Disease should follow exposure Dose dependent Expected response Association should be the same Other cause-effect ruled out Control results in decreased disease Modification of host results in decrease Human vol. always + Findings should make sense
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Factors in Causation of Disease Predisposing Enabling Precipitating Reinforcing Your Assignment: Define these terms as they apply to epidemiology.
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Web of Causation
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Lec16AssociationtoCausation(Revised07) - Association to...

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