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Methodological issues in mammography double reading studies
L J Williams1, M Hartswood, R J Prescott
1Department of Public Health Sciences, University of Edinburgh.
Journal of Medical Screening
|February 6, 1999
Abstract
Objectives:
An examination of the methods used in assessing cancer detection rates in double reading studies to obtain a clear interpretation of the disparate results from differing studies.
Setting:
National breast screening programmes.
Methods:
Critical appraisal of methodologies used in the comparison of cancer detection rates with single or double reading.
Results:
The reported improvement in cancer detection rate with double reading varies greatly between studies, depending upon whether the study is blinded and the statistic used. A method of calculating the increase in cancer detection rate due to a second reader is proposed.