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Unfolding the phenomenon of interrater agreement: a multicomponent approach for in-depth examination was proposed.

Författare

Summary, in English

OBJECTIVE:

The overall objective was to unfold the phenomenon of interrater agreement: to identify potential sources of variation in agreement data and to explore how they can be statistically accounted for. The ultimate aim was to propose recommendations for in-depth examination of agreement to improve the reliability of assessment instruments.



STUDY DESIGN AND SETTING:

Using a sample where 10 rater pairs had assessed the presence/absence of 188 environmental barriers by a systematic rating form, a raters×items data set was generated (N=1,880). In addition to common agreement indices, relative shares of agreement variation were calculated. Multilevel regression analysis was carried out, using rater and item characteristics as predictors of agreement variation. RESULTS: Following a conceptual decomposition, the agreement variation was statistically disentangled into relative shares. The raters accounted for 6-11%, the items for 32-33%, and the residual for 57-60% of the variation. Multilevel regression analysis showed barrier prevalence and raters' familiarity with using standardized instruments to have the strongest impact on agreement.



CONCLUSION:

Supported by a conceptual analysis, we propose an approach of in-depth examination of agreement variation, as a strategy for increasing the level of interrater agreement. By identifying and limiting the most important sources of disagreement, instrument reliability can be improved ultimately.

Ämne

  • Public Health, Global Health, Social Medicine and Epidemiology

Status

Published

Projekt

  • Home, Health and Disability along the Process of Ageing

Forskningsgrupp

  • Sustainable occupations and health in a life course perspective
  • Active and Healthy Ageing Research Group

ISBN/ISSN/Övrigt

  • ISSN: 1878-5921