From Exposures to Interventions
In Chapter 9, the author discusses the causal impact framework, an approach to epidemiologic methods that can be used to move from internally valid estimates to externally valid estimates to valid estimates of the effects of population interventions. Such work is essential if epidemiologists want the results of their experimental or observational studies to directly inform public health policy decisions. The bulk of this chapter outlines and describes an approach to epidemiologic methods relevant to implementation science. The author summarizes the entire book by briefly addressing the lessons of the previous chapters for the so-called hierarchy of evidence (hierarchy of study designs).
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