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Acad Radiol. 2000 Apr;7(4):232-6.

Comparison of woman-specific versus breast-specific data for reporting screening mammography performance.

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  • 1Department of Radiology, University of North Carolina School of Medicine, Chapel Hill 27599-7515, USA.

Abstract

RATIONALE AND OBJECTIVES:

Screening mammography data can be reported on a breast-specific or woman-specific level, and much mammography data available for research is woman-specific. The purpose of this study was to determine if woman-specific screening mammography data are sufficient for research and reporting by measuring and comparing the accuracy of screening mammography on a breast-specific and on a woman-specific level.

MATERIALS AND METHODS:

Definitions for true-positive and false-positive mammography results were developed to distinguish between breast-specific and woman-specific calculations. The sensitivity, specificity, and positive predictive values of screening mammography were calculated on a breast-specific and on a woman-specific basis for the entire population of the Carolina Mammography Registry and for a randomly selected subset of the population.

RESULTS:

Only small differences were found in breast-specific versus woman-specific calculations of sensitivity, specificity, and positive predictive values for both the entire population and the smaller subset population. For both populations, woman-specific sensitivity and positive predictive values were slightly higher than the same breast-specific values, and woman-specific specificity was slightly lower.

CONCLUSION:

For research and reporting, woman-specific data are sufficient.

PMID:
10766095
[PubMed - indexed for MEDLINE]
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