title: The effect on reliability of adding a separate written assessment component to an objective structured clinical examination.
abstract: OBJECTIVE
  To determine the effect on test reliability when a separate written assessment component is added to an objective structured clinical examination (OSCE).
  
  
  METHODS
  Volunteers (n=38) from Maastricht Medical School were recruited to take a skills-related knowledge test in addition to their regular end-of-year OSCE. The OSCE scores of these volunteers did not differ from those of the other students of their class. Multivariate generalizability theory was used to investigate the combined reliability of the two test formats as well as their respective contributions to overall reliability.
  
  
  RESULTS
  Combining the two formats has an added value. The loss of reliability due to the use of fewer stations in the OSCE can be fully compensated by lengthening the written test component.
  
  
  CONCLUSIONS
  From the perspective of test reliability, it is possible to economize on the resources needed for performance-based assessment by adding a separate written test component.
authors.affiliation: Skillslab, Maastricht University, Maastricht, The Netherlands.
authors.forename: B H
authors.initials: BH
authors.lastname: Verhoeven
authors.forename: J G
authors.initials: JG
authors.lastname: Hamers
authors.forename: A J
authors.initials: AJ
authors.lastname: Scherpbier
authors.forename: R J
authors.initials: RJ
authors.lastname: Hoogenboom
authors.forename: C P
authors.initials: CP
authors.lastname: van der Vleuten
mesh_terms: D000328:Adult; D002983:Clinical Competence; D004504:Education, Medical, Undergraduate / Q000379:methods*; D004521:Educational Measurement / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D009426:Netherlands; D015203:Reproducibility of Results; D014956:Writing