multinomial tree models for assessing the status of the reference in studies of the accuracy of tools for binary classification
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ID: 141462
2013
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Abstract
Studies that evaluate the accuracy of binary classification tools are needed. Such studies provide 2x2 cross-classifications of test outcomes and the categories according to an unquestionable reference (or gold standard). However, sometimes a suboptimal reliability reference is employed. Several methods have been proposed to deal with studies where the observations are cross-classified with an imperfect reference. These methods require that the status of the reference, as a gold standard or as an imperfect reference, is known. In this paper a procedure for determining whether it is appropriate to maintain the assumption that the reference is a gold standard or an imperfect reference, is proposed. This procedure fits two nested multinomial tree models, and assesses and compares their absolute and incremental fit. Its implementation requires the availability of the results of several independent studies. These should be carried out using similar designs to provide frequencies of cross-classification between a test and the reference under investigation. The procedure is applied in two examples with real data.
| Reference Key |
ebotella2013frontiersmultinomial
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|---|---|
| Authors | ;Juan eBotella;Huiling eHuang;Manuel eSuero |
| Journal | accounts of chemical research |
| Year | 2013 |
| DOI |
10.3389/fpsyg.2013.00694
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| URL | |
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