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ORIGINAL RESEARCH PAPER
Year : 2009  |  Volume : 22  |  Issue : 3  |  Page : 313

Portfolio Assessment during Medical Internships: How to Obtain a Reliable and Feasible Assessment Procedure?


1 Faculty of Medicine, University of Antwerp, Belgium
2 University of Antwerp, Belgium, The Netherlands

Correspondence Address:
Nele R Michels
Universiteitsplein 1, 2610 Wilrijk
Belgium
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Source of Support: None, Conflict of Interest: None


PMID: 20029764

Background: A portfolio is used to mentor and assess students' clinical performance at the workplace. However, students and raters often perceive the portfolio as a time-consuming instrument. Purpose: In this study, we investigated whether assessment during medical internship by a portfolio can combine reliability and feasibility. Methods: The domain-oriented reliability of 61 double-rated portfolios was measured, using a generalisability analysis with portfolio tasks and raters as sources of variation in measuring the performance of a student. Results: We obtained reliability (Φ coefficient) of 0.87 with this internship portfolio containing 15 double-rated tasks. The generalisability analysis showed that an acceptable level of reliability (Φ = 0.80) was maintained when the amount of portfolio tasks was decreased to 13 or 9 using one and two raters, respectively. Conclusions: Our study shows that a portfolio can be a reliable method for the assessment of workplace learning. The possibility of reducing the amount of tasks or raters while maintaining a sufficient level of reliability suggests an increase in feasibility of portfolio use for both students and raters.


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