OSCEs
An objective structured clinical examination (OSCE) is designed to test clinical skill performance
and competence in skills such as communication, clinical examination, medical procedures /
prescription, exercise prescription / joint mobilization / manipulation techniques / radiographic
image evaluation / interpretation of results, etc. It is a hands-on, real-world approach to learning
that keeps examinees engaged, allows them to understand the key factors that drive the medical
decision-making process, and challenges the professional to be innovative and reveals their errors
in case-handling and provides an open space for improved decision-making, based on evidence-
based practice for real-world responsibilities.
An OSCE usually comprises a circuit of short (the usual is 5–10 minutes although some use up
to 15 minute) stations, in which each candidate is examined on a one-to-one basis with one or
two impartial examiner(s) and either real or simulated patients (actors or electronic patient
simulators). Each station has a different examiner, as opposed to the traditional method of clinical
examinations where a candidate would be assigned to an examiner for the entire examination.
Candidates rotate through the stations, completing all the stations on their circuit. In this way, all
candidates take the same stations. It is considered to be an improvement over traditional
examination methods because the stations can be standardized enabling fairer peer comparison
and complex procedures can be assessed without endangering the patient’s health.
As the name suggests, an OSCE is designed to be objective – all candidates are assessed using
exactly the same stations (although if real patients are used, their signs may vary slightly) with the
same marking scheme. In an OSCE, candidates get marks for each step on the mark scheme
that they perform correctly, which therefore makes the assessment of clinical skills more objective,
rather than subjective, structured – stations in OSCEs have a very specific task. Where simulated
patients are used, detailed scripts are provided to ensure that the information that they give is the
same to all candidates, including the emotions that the patient should use during the consultation.
Instructions are carefully written to ensure that the candidate is given a very specific task to
complete. The OSCE is carefully structured to include parts from all elements of the curriculum
as well as a wide range of skills. A clinical examination - the OSCE is designed to apply clinical
and theoretical knowledge. Where theoretical knowledge is required, for example, answering
questions from the examiner at the end of the station, then the questions are standardized and
the candidate is only asked questions that are on the mark sheet and if the candidate is asked
any others then there will be no marks for them. Grading in OSCEs is done by the examiner.
Occasionally written stations, for example, writing a prescription chart, are used and these are
marked like written examinations, again usually using a standardized mark sheet. One of the ways
an OSCE is made objective is by having a detailed mark scheme and standard set of questions.
For example, a station concerning the demonstration to a simulated patient on how to use a
metered dose inhaler [MDI] would award points for specific action, which are performed safely
and accurately. The examiner can often vary the marks depending on how well the candidate
performed the step. At the end of the mark sheet, the examiner often has a small number of marks
that they can use to weight the station depending on performance and if a simulated patient is
used, then they are often asked to add marks depending on the candidates approach. At the end,
the examiner is often asked to give a "global score". This is usually used as a subjective score
based on the candidates overall performance, not taking into account how many marks the
candidate scored. The examiner is usually asked to rate the candidate as pass/borderline/fail or
sometimes as excellent/good/pass/borderline/fail. This is then used to determine the individual
pass mark for the station. (Appendix IX)