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Published on: January 16, 2019
The reproducibility of assessing radiological reporting: studies from the development of the General Medical
B C Jolly1, B Ayers, M M Macdonald
1Centre for Medical and Health Science Education, Monash University, Melbourne, Victoria, Australia.
Objectives:
To investigate the reproducibility of peer ratings of consultant radiologists' reports, as part of the new General Medical Council (GMC) Performance Procedures.
Design:
An evaluation protocol was piloted, used in a blocked, balanced, randomized generalizability analysis with three blocks of three judges (raters), each rating 30 reports from 10 radiologists, and re-rated to estimate intrarater reliability with conventional statistics (kappa).
Setting:
Rating was performed at the Royal College of Radiologists. Volunteers were sampled from 23 departments of radiology in university teaching and district general hospitals.
Participants:
A nationally drawn non-random sample of 30 consultant radiologists contributing a total of 900 reports. Three trained and six non-trained judges were used in the rating analysis.
Results:
A protocol was generated that was usable by judges. Generalizable results would be obtained with not less than three judges all rating the same 60 reports from a radiologist.
Conclusions:
Any assessment of performance of technical abilities in this field will need to use multiple assessors, basing judgements on an adequate sample of reports.
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