Statistical Comparison of Two ROC-curve Estimates Obtained from Partially-paired Datasets
抄録
<jats:p> The authors propose a new generalized method for ROC-curve fitting and statistical testing that allows researchers to utilize all of the data collected in an experimental comparison of two diagnostic modalities, even if some patients have not been studied with both modalities. Their new algorithm, ROCKIT, subsumes previous algorithms as special cases. It conducts all analyses available from previous ROC software and provides 95% confidence intervals for all estimates. R<jats:sub>OCKIT</jats:sub> was tested on more than half a million computer-simulated datasets of various sizes and configurations repre senting a range of population ROC curves. The algorithm successfully converged for more than 99.8% of all datasets studied. The type I error rates of the new algorithm's statistical test for differences in A<jats:sub>z</jats:sub> estimates were excellent for datasets typically en countered in practice, but diverged from alpha for datasets arising from some extreme situations. Key words. receiver operating characteristic (ROC) analysis, maximum-like lihood estimation; partially-paired data; missing data. (Med Decis Making 1998;18: 110-121) </jats:p>
収録刊行物
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- Medical Decision Making
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Medical Decision Making 18 (1), 110-121, 1998-01
SAGE Publications
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詳細情報 詳細情報について
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- CRID
- 1363107370101321216
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- NII論文ID
- 30026153883
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- ISSN
- 1552681X
- 0272989X
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- データソース種別
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