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Implementing the undergraduate mini-CEX: a tailored approach at Southampton University

Hill, Faith, Kendall, Kathleen, Galbraith, Kevin and Crossley, Jim (2009) Implementing the undergraduate mini-CEX: a tailored approach at Southampton University Medical Education, 43, (4), pp. 326-334. (doi:10.1111/j.1365-2923.2008.03275.x). (PMID:19335574).

Record type: Article

Abstract

OBJECTIVES: The mini-clinical evaluation exercise (mini-CEX) is widely used in the UK to assess clinical competence, but there is little evidence regarding its implementation in the undergraduate setting. This study aimed to estimate the validity and reliability of the undergraduate mini-CEX and discuss the challenges involved in its implementation.

METHODS: A total of 3499 mini-CEX forms were completed. Validity was assessed by estimating associations between mini-CEX score and a number of external variables, examining the internal structure of the instrument, checking competency domain response rates and profiles against expectations, and by qualitative evaluation of stakeholder interviews. Reliability was evaluated by overall reliability coefficient (R), estimation of the standard error of measurement (SEM), and from stakeholders' perceptions. Variance component analysis examined the contribution of relevant factors to students' scores.

RESULTS: Validity was threatened by various confounding variables, including: examiner status; case complexity; attachment specialty; patient gender, and case focus. Factor analysis suggested that competency domains reflect a single latent variable. Maximum reliability can be achieved by aggregating scores over 15 encounters (R = 0.73; 95% confidence interval [CI] +/- 0.28 based on a 6-point assessment scale). Examiner stringency contributed 29% of score variation and student attachment aptitude 13%. Stakeholder interviews revealed staff development needs but the majority perceived the mini-CEX as more reliable and valid than the previous long case.

CONCLUSIONS: The mini-CEX has good overall utility for assessing aspects of the clinical encounter in an undergraduate setting. Strengths include fidelity, wide sampling, perceived validity, and formative observation and feedback. Reliability is limited by variable examiner stringency, and validity by confounding variables, but these should be viewed within the context of overall assessment strategies.

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More information

Published date: April 2009

Identifiers

Local EPrints ID: 67232
URI: http://eprints.soton.ac.uk/id/eprint/67232
ISSN: 0308-0110
PURE UUID: cb1a24e3-cf71-4c05-b5e5-f84e4431500f

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Date deposited: 07 Aug 2009
Last modified: 19 Jul 2017 00:20

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Contributors

Author: Faith Hill
Author: Kevin Galbraith
Author: Jim Crossley

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