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PubMed · 11822570

Examining test-retest reliability: an intra-class correlation approach.

Miaofen Yen·Li-Hua Lo
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Abstract

BACKGROUND: There are limitations of inter-class correlation (usually, the Pearson's product-moment correlation) in evaluating reliability of an instrument. An intra-class correlation approach would be appropriate to examine the test-retest reliability of an instrument. OBJECTIVES: To introduce an intra-class correlation approach to examine the test-retest reliability of an instrument. METHOD: The method of constructing an intra-class correlation coefficient was presented. RESULTS: The instrument with visual analog scales to measure the perceived competence to practice breast self-examination and perceived barriers to breast self-examination was tested. The intra-class correlation coefficient was 0.640. CONCLUSION: The intra-class correlation is an alternative to test the reliability of an instrument and it is more sensitive to the detection of systematic error.

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Breast Self-ExaminationFemaleHumansNursing ResearchPsychometricsReproducibility of ResultsJournal ArticleReview

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Miaofen Yen, Li-Hua Lo. Examining test-retest reliability: an intra-class correlation approach.. https://doi.org/10.1097/00006199-200201000-00009

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