Kristen Ricchetti - Masterson , MSPH Karin
نویسندگان
چکیده
The primary goal of the epidemiologist is to identify those factors that have a causal impact on development or prevention of a health outcome, thereby providing a target for prevention and intervention. At first glance, causality may appear to be a relatively simple concept to define. However, adequately distinguishing causal agents from non-causal agents is not an easy task from an epidemiologic perspective. Unfortunately, there is no elementary parameter that can be measured to provide a definitive answer when determining causality. Rather, there are a series of criteria that have been developed and refined over the years that now serve as the guideline for causal inference. The most important point to remember is that causality is not determined by any one factor, rather it is a conclusion built on the preponderance of the evidence.
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