Examining test-retest reliability: An intra-class correlation approach

Miaofen Yen, Li Hua Lo

Research output: Contribution to journalArticle

104 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)59-62
Number of pages4
JournalNursing Research
Volume51
Issue number1
DOIs
Publication statusPublished - 2002 Jan 1

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Breast Self-Examination
Reproducibility of Results
Visual Analog Scale
Mental Competency

All Science Journal Classification (ASJC) codes

  • Nursing(all)

Cite this

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Examining test-retest reliability : An intra-class correlation approach. / Yen, Miaofen; Lo, Li Hua.

In: Nursing Research, Vol. 51, No. 1, 01.01.2002, p. 59-62.

Research output: Contribution to journalArticle

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AU - Lo, Li Hua

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AB - 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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