External validity [Neurosurgery Wiki]

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====== External validity ======
External Validity or [[Clinical Applicability]] is the [[validity]] of generalized (causal) inferences in scientific research, usually based on experiments as experimental validity.

In other words, it is the extent to which the results of a study can be generalized to other situations and to other people.

Mathematical analysis of external validity concerns a determination of whether generalization across heterogeneous populations is feasible, and devising statistical and computational methods that produce valid generalizations.
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The [[reviewer]] should ask if the results will help doctors care for their patients in the clinical setting. It is important for the reviewer to understand the difference between [[efficacy]] and [[effectiveness]] of the results.