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Teaching Receiver Operating Characteristic Analysis: An Interactive Laboratory Exercise.
MedLine Citation:
PMID:  23040502     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
RATIONALE AND OBJECTIVES: Despite its fundamental importance in the evaluation of diagnostic tests, receiver operating characteristic (ROC) analysis is not easily understood. The purpose of this project was to create a learning experience that resulted in an intuitive understanding of the basic principles of ROC analysis. MATERIALS AND METHODS: An interactive laboratory exercise was developed for a class about radiology testing taught within a clinical epidemiology course between 2000 and 2009. The physician students in the course were clinical fellows from various medical specialties who were enrolled in a graduate degree program in clinical investigation. For the exercise, the class was divided into six groups. Each group interpreted radiographs from a set of 50 exams of the peripheral skeleton to determine the presence or absence of an acute fracture. Data from the class were pooled and given to each student. Students calculated the area under the ROC curve (AUC) corresponding to overall class performance. A binormal ROC curve was also fitted to the data from each class year. RESULTS: The laboratory exercise was conducted for 8 years with approximately 20-30 students per year. The mean AUC over the eight laboratory classes was 0.72 with a standard deviation of 0.08 (range, 0.60-0.85). CONCLUSION: With some simplifications in design, an observer study can be conducted in a laboratory classroom setting. Participatory data collection promotes the intuitive understanding of ROC analysis principles.
Authors:
John Eng
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-3
Journal Detail:
Title:  Academic radiology     Volume:  -     ISSN:  1878-4046     ISO Abbreviation:  Acad Radiol     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-8     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9440159     Medline TA:  Acad Radiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 AUR. Published by Elsevier Inc. All rights reserved.
Affiliation:
Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Baltimore, MD 21287. Electronic address: jeng@jhmi.edu.
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