Cited by 37Innovations in Medical EducationPsychometric Methodologies and TestingReliability and Agreement in Measurement

A laboratory study on the reliability estimations of the mini-CEX

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Alves de Lima, Alberto, Conde, Diego, Costabel, Juan, Corso, Juan, Van der Vleuten, Cees·2013·Advances in Health Sciences Education

Abstract

Reliability estimations of workplace-based assessments with the mini-CEX are typically based on real-life data. Estimations are based on the assumption of local independence: the object of the measurement should not be influenced by the measurement itself and samples should be completely independent. This is difficult to achieve. Furthermore, the variance caused by the case/patient or by assessor is completely confounded. We have no idea how much each of these factors contribute to the noise in the measurement. The aim of this study was to use a controlled setup that overcomes these difficulties and to estimate the reproducibility of the mini-CEX. Three encounters were videotaped from 21 residents. The patients were the same for all residents. Each encounter was assessed by 3 assessors who assessed all encounters for all residents. This delivered a fully crossed (all random) two-facet generalizability design. A quarter of the total variance was associated with universe score variance (28%). The largest source of variance was the general error term (34%) followed by the main effect of assessors (18%). Generalizability coefficients indicated that an approximate sample of 9 encounters was needed assuming a single different assessor per encounter and assuming different cases per encounter (the usual situation in real practice), 4 encounters when 2 raters were used and 3 encounters when 3 raters are used. Unexplained general error and the leniency/stringency of assessors are the major causes for unreliability in mini-CEX. To optimize reliability rater training might have an effect.

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Authors
Alves de Lima, A., Conde, D., Costabel, J., Corso, J., & Van der Vleuten, C.
Affiliations
Instituto Cardiovascular de Buenos Aires (AR)
Venue
Advances in Health Sciences Education
Published
2011-12-23
Volume
18
Issue
1
Pages
5-13
ISSN
  • 1382-4996 (ISSN-L)
  • 1573-1677
OpenAlex
W1994615095
Cited by
37
References
14
Citations by year
2025: 3 · 2024: 2 · 2022: 7 · 2021: 3 · 2020: 2 · 2019: 3 · 2017: 5 · 2016: 3 · 2015: 5 · 2014: 1 · 2013: 1 · 2012: 2
FWCI
1.26
Type
journal article
Language
en
Open access
Licence
cc-by-nc
Locations
  • Advances in Health Sciences Education (publishedVersion, cc-by-nc)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • Research Publications (Maastricht University) (submittedVersion, cc-by-nc)
  • Radboud Repository (Radboud University) (submittedVersion)
  • Research Publications (Maastricht University) (submittedVersion, other-oa)
Topics
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Innovations in Medical Education
  • Social Sciences › Decision Sciences › Management Science and Operations Research › Psychometric Methodologies and Testing
  • Social Sciences › Decision Sciences › Statistics, Probability and Uncertainty › Reliability and Agreement in Measurement
Keywords
Mini-CEX, workplace-based assessment, reliability statistics, generalizability theory, rater variability, local independence, sample size determination, rater training, medical residents
MeSH terms
Argentina, Cardiology, Clinical Competence, Education, Medical, Graduate, Educational Measurement, Female, Humans, Male, Medical Staff, Hospital, Videotape Recording, Reproducibility of Results, Patient Simulation

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