Validity and reliability in research pdf9/15/2023 ![]() ![]() (Scientific Advisory Committee of the Medical Outcomes Trust Assessing health status and quality-of-life instruments: Attributes and review criteria. What is Responsiveness? An instrument’s ability to detect change over time.What is Reliability? The degree to which an instrument can produce consistent results, and consistent results on different occasions, when there is no evidence of change.For example, a survey designed to explore depression but which actually measures anxiety would not be consid-ered valid. Assessing health status and quality-of-life instruments: attributes and review criteria. through measurement of the validity and reliability.1 Validity Validity is dened as the extent to which a concept is accurately measured in a quantitative study. (Scientific Advisory Committee of the Medical Outcomes Trust. What is Validity? The degree to which an instrument measures what it is supposed to measure.A list of references for published validity, reliability and responsiveness studies. ![]()
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