Transcription of Validity and reliability in quantitative studies
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Validity and reliability in quantitative studies
Validity and reliability in quantitative studiesRoberta Heale,1 Alison Twycross2 Evidence-based practice includes, in part, implementa-tion of thefindings of well-conducted quality researchstudies. So being able to critique quantitative research isan important skill for nurses. Consideration must begiven not only to the results of the study but also therigourof the research. Rigour refers to the extent towhich the researchers worked to enhance the quality ofthe studies . In quantitative research, this is achievedthrough measurement of the Validity and defined as the extent to which a concept isaccurately measured in a quantitative study.
ered valid. The second measure of quality in a quantita-tive study is reliability, or the accuracy of an instrument. In other words, the extent to which a research instru-ment consistently has the same results if it is used in the same situation on repeated occasions. A simple example of validity and reliability is an alarm clock that rings at
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