Using Item Analysis to Assess Objectively the Quality of the Calgary-Cambridge OSCE Checklist

Authors

  • Tyrone Donnon University of Calgary
  • Murray Lee University of Calgary
  • Sarah Cairncross University of Calgary

DOI:

https://doi.org/10.36834/cmej.36556

Abstract

Background:  The purpose of this study was to investigate the use of item analysis to assess objectively the quality of items on the Calgary-Cambridge Communications OSCE checklist.

Methods:  A total of 150 first year medical students were provided with extensive teaching on the use of the Calgary-Cambridge Guidelines for interviewing patients and participated in a final year end 20 minute communication OSCE station.  Grouped into either the upper half (50%) or lower half (50%) communication skills performance groups, discrimination, difficulty and point biserial values were calculated for each checklist item.

Results:  The mean score on the 33 item communication checklist was 24.09 (SD = 4.46) and the internal reliability coefficient was ? = 0.77. Although most of the items were found to have moderate (k = 12, 36%) or excellent (k = 10, 30%) discrimination values, there were 6 (18%) identified as ‘fair’ and 3 (9%) as ‘poor’. A post-examination review focused on item analysis findings resulted in an increase in checklist reliability (? = 0.80).

Conclusions:  Item analysis has been used with MCQ exams extensively. In this study, it was also found to be an objective and practical approach to use in evaluating the quality of a standardized OSCE checklist.

Author Biographies

Tyrone Donnon, University of Calgary

Associate Professor, Department of Community Health Sciences, Faculty of Medicine

Murray Lee, University of Calgary

Assistant Clinical Professor in the Department of Community Health Sciences and co-chair of the Communications unit in the Medical Skills course, Faculty of Medicine

Sarah Cairncross, University of Calgary

Assistant Clinical Professor in the Department of Family Medicine and co-chair of the Communications unit in the Medical Skills course, Faculty of Medicine

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Published

2011-06-03

How to Cite

1.
Donnon T, Lee M, Cairncross S. Using Item Analysis to Assess Objectively the Quality of the Calgary-Cambridge OSCE Checklist. Can. Med. Ed. J [Internet]. 2011Jun.3 [cited 2021Sep.19];2(1):e16-e22. Available from: https://journalhosting.ucalgary.ca/index.php/cmej/article/view/36556

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