Document Detail


Matchmaking and McNemar in the comparison of diagnostic modalities.
MedLine Citation:
PMID:  1987587     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Comparative studies of radiologic techniques commonly yield matched data due to the ease and desirability of performing all of the techniques on each of the patients. The two-by-two matched data array and the McNemar analysis provide a succinct format for the presentation and proper analysis of matched comparisons of binary (positive and negative) test results. When comparing tests, it is essential not to rely on just the statistical significance of the differences in sensitivities (or specificities); the magnitude of the differences must also be assessed. Confidence intervals provide a useful form of estimation by providing a range of plausible values and an indication of the precision of the estimate. The matched data array also indicates the complementarity of the diagnostic tests being compared.
Authors:
A J Dwyer
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Radiology     Volume:  178     ISSN:  0033-8419     ISO Abbreviation:  Radiology     Publication Date:  1991 Feb 
Date Detail:
Created Date:  1991-02-20     Completed Date:  1991-02-20     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0401260     Medline TA:  Radiology     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  328-30     Citation Subset:  AIM; IM    
Affiliation:
Department of Radiology, National Institutes of Health, Bethesda, MD 20814.
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MeSH Terms
Descriptor/Qualifier:
Diagnostic Imaging*
Humans
Statistics as Topic / methods*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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