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Erschienen in: Health Services and Outcomes Research Methodology 2/2017

23.08.2016

Intraclass correlation coefficients: clearing the air, extending some cautions, and making some requests

verfasst von: Robert Trevethan

Erschienen in: Health Services and Outcomes Research Methodology | Ausgabe 2/2017

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Abstract

Intraclass correlation coefficients (ICCs) are frequently employed in health science research, often to assess intrarater and interrater reliability. In many cases, insufficient details are provided about these ICCs and there seem to be misunderstandings about their selection and how they should be interpreted. This paper is intended primarily to provide a clear, accessible description of ICCs, including how they should be selected, interpreted, and reported. Emphasis is given to areas where researchers seem to encounter the greatest conceptual difficulties and to exhibit the greatest misconceptions. Two extended examples are used to support the points being made. Major additional aims of this paper are to raise the awareness of authors, reviewers, and editors concerning the importance of using appropriate ICCs, and to encourage them to ensure that complete and accurate information about ICCs is reported in journal articles. Failure to do so perpetuates a risk that incorrect decisions might be made about matters that are of crucial importance for people’s health.
Literatur
Zurück zum Zitat Brozek, J., Alexander, H.: Components of variance and the consistency of repeated measurements. Res. Q. 18, 152–166 (1947)PubMed Brozek, J., Alexander, H.: Components of variance and the consistency of repeated measurements. Res. Q. 18, 152–166 (1947)PubMed
Zurück zum Zitat Carrasco, J.L., Jover, L.: Estimating the generalized concordance correlation coefficient through variance components. Biometrics 59, 849e58 (2003)CrossRef Carrasco, J.L., Jover, L.: Estimating the generalized concordance correlation coefficient through variance components. Biometrics 59, 849e58 (2003)CrossRef
Zurück zum Zitat Fleiss, J.: The Design and Analysis of Clinical Experiments. Wiley, New York (1986) Fleiss, J.: The Design and Analysis of Clinical Experiments. Wiley, New York (1986)
Zurück zum Zitat Hallgren, K.A.: Computing inter-rater reliability for observational data: an overview and tutorial. Tutor. Quant. Methods Psychol. 8(1), 23–34 (2012)CrossRefPubMedPubMedCentral Hallgren, K.A.: Computing inter-rater reliability for observational data: an overview and tutorial. Tutor. Quant. Methods Psychol. 8(1), 23–34 (2012)CrossRefPubMedPubMedCentral
Zurück zum Zitat Kottner, J., Audigé, L., Brorson, S., Donner, A., Gajewski, B.J., Hróbjartsson, A., Roberts, C., Shoukri, M., Streiner, D.L.: Guidelines for reporting reliability and agreement studies (GRRAS) were proposed. J. Clin. Epidemiol. 64, 96–106 (2011). doi:10.1016/j.jclinepi.2010.03.002 CrossRefPubMed Kottner, J., Audigé, L., Brorson, S., Donner, A., Gajewski, B.J., Hróbjartsson, A., Roberts, C., Shoukri, M., Streiner, D.L.: Guidelines for reporting reliability and agreement studies (GRRAS) were proposed. J. Clin. Epidemiol. 64, 96–106 (2011). doi:10.​1016/​j.​jclinepi.​2010.​03.​002 CrossRefPubMed
Zurück zum Zitat McGraw, K.O., Wong, S.P.: Forming inferences about some intraclass correlation coefficients. Psychol. Methods 1, 30–46 (1996)CrossRef McGraw, K.O., Wong, S.P.: Forming inferences about some intraclass correlation coefficients. Psychol. Methods 1, 30–46 (1996)CrossRef
Zurück zum Zitat Müller, R., Büttner, P.: A critical discussion of intraclass correlation coefficients. Stat. Med. 13, 2465–2476 (1994)CrossRefPubMed Müller, R., Büttner, P.: A critical discussion of intraclass correlation coefficients. Stat. Med. 13, 2465–2476 (1994)CrossRefPubMed
Zurück zum Zitat Nunnally, J.C., Bernstein, I.H.: Psychometric Theory, 3rd edn. McGraw Hill, New York (1994) Nunnally, J.C., Bernstein, I.H.: Psychometric Theory, 3rd edn. McGraw Hill, New York (1994)
Zurück zum Zitat Portney, L.G., Watkins, M.P.: Foundations of clinical research: applications to practice, 3rd edn. Pearson Education, Upper Saddle River (2009) Portney, L.G., Watkins, M.P.: Foundations of clinical research: applications to practice, 3rd edn. Pearson Education, Upper Saddle River (2009)
Zurück zum Zitat Rankin, G., Stokes, M.: Reliability of assessment tools in rehabilitation: an illustration of appropriate statistical analyses. Clin. Rehabil. 12, 187–199 (1998)CrossRefPubMed Rankin, G., Stokes, M.: Reliability of assessment tools in rehabilitation: an illustration of appropriate statistical analyses. Clin. Rehabil. 12, 187–199 (1998)CrossRefPubMed
Zurück zum Zitat Scanlon, C., Park, K., Mapletoft, D., Begg, L., Burns, J.: Interrater and intrarater reliability of photoplethysmography for measuring toe blood pressure and toe-brachial index in people with diabetes mellitus. J. Foot Ankle Res. 5, 13 (2012). doi:10.1186/1757-1146-5-13 CrossRefPubMedPubMedCentral Scanlon, C., Park, K., Mapletoft, D., Begg, L., Burns, J.: Interrater and intrarater reliability of photoplethysmography for measuring toe blood pressure and toe-brachial index in people with diabetes mellitus. J. Foot Ankle Res. 5, 13 (2012). doi:10.​1186/​1757-1146-5-13 CrossRefPubMedPubMedCentral
Zurück zum Zitat Shrout, P.E., Fleiss, J.L.: Intraclass correlations: uses in assessing rater reliability. Psychol. Bull. 86, 420–428 (1979)CrossRefPubMed Shrout, P.E., Fleiss, J.L.: Intraclass correlations: uses in assessing rater reliability. Psychol. Bull. 86, 420–428 (1979)CrossRefPubMed
Zurück zum Zitat Sonter, J., Chuter, V., Casey, S.: Intratester and intertester reliability of toe pressure measurements in people with and without diabetes performed by podiatric physicians. J. Am. Podiatr. Med. Assoc. 105, 201–208 (2015a). doi:10.7547/0003-0538-105.3.201 CrossRefPubMed Sonter, J., Chuter, V., Casey, S.: Intratester and intertester reliability of toe pressure measurements in people with and without diabetes performed by podiatric physicians. J. Am. Podiatr. Med. Assoc. 105, 201–208 (2015a). doi:10.​7547/​0003-0538-105.​3.​201 CrossRefPubMed
Zurück zum Zitat Tehan, P.E., Bray, A., Chuter, V.H.: Non-invasive vascular assessment in the foot with diabetes: sensitivity and specificity of the ankle brachial index, toe brachial index and continuous wave Doppler for detecting peripheral arterial disease. J. Diabetes Complicat. 30, 155–160 (2015). doi:10.1016/j.jdiacomp.2015.07.019 CrossRefPubMed Tehan, P.E., Bray, A., Chuter, V.H.: Non-invasive vascular assessment in the foot with diabetes: sensitivity and specificity of the ankle brachial index, toe brachial index and continuous wave Doppler for detecting peripheral arterial disease. J. Diabetes Complicat. 30, 155–160 (2015). doi:10.​1016/​j.​jdiacomp.​2015.​07.​019 CrossRefPubMed
Zurück zum Zitat Wrobel, J.S., Armstrong, D.G.: Reliability and validity of current physical examination techniques of the foot and ankle. J. Am. Podiatr. Med. Assoc. 98, 197–206 (2008)CrossRefPubMed Wrobel, J.S., Armstrong, D.G.: Reliability and validity of current physical examination techniques of the foot and ankle. J. Am. Podiatr. Med. Assoc. 98, 197–206 (2008)CrossRefPubMed
Metadaten
Titel
Intraclass correlation coefficients: clearing the air, extending some cautions, and making some requests
verfasst von
Robert Trevethan
Publikationsdatum
23.08.2016
Verlag
Springer US
Erschienen in
Health Services and Outcomes Research Methodology / Ausgabe 2/2017
Print ISSN: 1387-3741
Elektronische ISSN: 1572-9400
DOI
https://doi.org/10.1007/s10742-016-0156-6