2018
DOI: 10.1080/03610926.2018.1549249
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Nonparametric predictive inference for diagnostic test thresholds

Abstract: The work in this thesis is based on research carried out in the Department of Mathematical Sciences at Durham University. No part of this thesis has been submitted elsewhere for any degree or qualification.

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Cited by 4 publications
(14 citation statements)
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“…Such methods can also be used in the case of many ordinal categories, if we cannot obtain perfect observations. Furthermore, NPI has been presented for direct selection of the optimal thresholds of a diagnostic test based on multiple future observations, which shows some promising results compared with the use of Youden's index for three‐group classification problems (Coolen‐Maturi et al ., ). Extending that for ordinal data and for more than three groups is an interesting topic.…”
Section: Discussionmentioning
confidence: 97%
“…Such methods can also be used in the case of many ordinal categories, if we cannot obtain perfect observations. Furthermore, NPI has been presented for direct selection of the optimal thresholds of a diagnostic test based on multiple future observations, which shows some promising results compared with the use of Youden's index for three‐group classification problems (Coolen‐Maturi et al ., ). Extending that for ordinal data and for more than three groups is an interesting topic.…”
Section: Discussionmentioning
confidence: 97%
“…This provides a natural link to diagnostic tests which provide real-valued outcomes, with an optimal threshold determined on the basis of the data and some optimality criterion. We have recently presented NPI methods for determination of an optimal diagnostic threshold for such a scenario [1,16], and this motivated us to develop the method presented in this paper. We also considered comparison of two diagnostic tests which are restricted to the real-valued case, and with criterion to maximize the NPI lower or upper probability of correctly classifying at least two specified proportions of the future individuals from the healthy and diseased group [2].…”
Section: Comparison Of Tests Using Npi For Bernoulli Quantitiesmentioning
confidence: 99%
“…The first two examples use made-up data in order to illustrate the approach and discuss its important features. Example 3 uses data from the literature and is linked to an application of our recently presented NPI method to determine the optimal diagnostic threshold for real-valued data [1,16]. Tables 1 and 2 present the NPI lower and upper probabilities for the events…”
Section: Examplesmentioning
confidence: 99%
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