Defining the content for the objective structured clinical examination component of the Professional and Linguistic Assessments Board examination: development of a blueprint.

Introduction We describe the steps taken to develop an appropriate list of ‘clinical problems’ used to define the content of the objective structured clinical examination (OSCE) component of the Professional and Linguistic Assessments Board (PLAB) examination. Method A blueprint and list of 255 clinical problems was compiled by reviewing PLAB questions, published curricula of the UK Royal Colleges and other sources such as the General Medical Council’s own guidelines. This list was sent to a random sample of 251 successful PLAB candidates who were asked to rate the clinical problems using a scale of ‘seen frequently/seldom/never’ and to 120 members of the accident and emergency (A&E) specialists’ association who were asked to identify ‘important’ tasks. The list was further validated using activity data obtained for consecutive A&E attendances (934) and admissions (6130) at three hospitals. Results After two mailings, 131/251 (52%) former PLAB candidates and 89/120 (74%) A&E specialists replied. All of the 255 clinical problems were seen by some former candidates and were felt to be important by some A&E specialists. Of the 255 problems, 40 were neither rated as important nor as seen frequently/seldom by over 50% of respondents. The 255 clinical problems covered a mean 94% consecutive A&E attendances and 97·6% reasons for hospital admission. The correlation between clinical problems that were frequently encountered and those felt to be important was rho=0·38 (P < 0·01). Conclusion The clinical problems appear to be appropriate for defining the content of the PLAB OSCE. We suggest that our problem list is useful in that all the problems are seen by some senior house officers, are felt to be important by some A&E specialists and cover greater than or equal to 94% of the conditions for which patients both attend and are admitted from casualty. The correlation between clinical task importance and the frequency that they were seen was only moderate, partly reflecting the relative seriousness of some uncommon medical conditions, which should not be missed on clinical assessment. The content of the OSCE component of the PLAB examination is being reviewed in the light of the findings of this study. The limitations of the study are discussed. [ABSTRACT FROM AUTHOR]