The limits of agreement and the intraclass correlation coefficient may be inconsistent in the interpretation of agreement

• Tipo: Artigo em Revista Científica Internacional
• Data: 2011

Autores

Cristina Costa Santos (Autor) FMUP; Joao Bernardes (Autor) FMUP; Diogo Ayres de Campos (Autor) FMUP; Antonia Costa (Autor) FMUP; Celia Costa (Autor) Outra

Revista

Título: Journal of Clinical Epidemiology

Vol. 64 Nº 3

Páginas: 264-269

ISSN: 0895-4356

Editora: Elsevier

Indexação

ISI Web of Knowledge - 70 Citações

Scopus - 73 Citações

Classificação Científica

FOS: Ciências médicas e da saúde > Ciências da saúde

Outras Informações

ID Authenticus: P-002-TZA

DOI: 10.1016/j.jclinepi.2009.11.010

Abstract (EN): Objective: To compare the interpretation of agreement in the prediction of neonatal outcome variables, using the limits of agreement (LA) and the intraclass correlation coefficient (ICC). Study Design and Setting: Three obstetricians were asked to predict neonatal outcomes independently based on the evaluation of intrapartum cardiotocographic tracings. Interobserver agreement was assessed with the LA and the ICC, and the results obtained were interpreted by six clinicians and six statisticians on a scale that established agreement as very poor, poor, fair, good, or very good. Results: Interpretation of the LA results was less consensual than the ICC results, with proportions of agreement of 0.36 (95% confidence interval [CI]: 0.28-0.44) vs. 0.63 (95% CI: 0.54-0.73), respectively. LA results suggested a fair to good agreement among obstetricians, whereas "interpretation of ICC results suggested a poor to fair agreement. LA results were more plausible with reality, suggesting that obstetricians predicted neonatal outcomes better than randomly generated values, whereas it was not always the case with the ICC. Conclusions: LA and ICC can provide inconsistent results in agreement studies. Accordingly, in the absence of better strategies to assess agreement, both should be used for this purpose, but their results need to be interpreted with caution keeping their respective limitations in mind.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6