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External Validity or Generalizability

Lead Author(s): Jeff Martin, MD

What is External Validity or Generalizability?

External validity is a measure of how well our study population reflects other populations. Can we generalize our study results to other populations? external_v.JPG

External validity - also called generalizability- asks the question: "Do the results obtained from the actual study subjects pertain to persons outside of the source population"?

Topic revision: r4 - 11 Jun 2009 - 16:06:16 - MaryB?

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