Background: Several regression methodologies have been developed to model the ROC as a function of covariate effects within the generalized linear model (GLM) framework. In this article, we present an alternative to two existing parametric and semi-parametric methods for estimating a covariate adjusted ROC. The existing methods utilize GLMs for binary data when the expected value equals the probability that the test result for a diseased subject exceeds that of a non-diseased subject with the same covariate values. This probability is referred to as the placement value. Objective: The new method directly models the placement values through beta regression. Methods: We compare the proposed method to the existing models with simulation and a clinical study. Conclusion: The proposed method performs favorably with the commonly used parametric method and has better performance than the semi-parametric method when modeling the covariate adjusted ROC regression.
Published in | Science Journal of Applied Mathematics and Statistics (Volume 6, Issue 4) |
DOI | 10.11648/j.sjams.20180604.11 |
Page(s) | 110-118 |
Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
Copyright |
Copyright © The Author(s), 2018. Published by Science Publishing Group |
Placement Values, Beta Regression, ROC Regression
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APA Style
Sarah Stanley, Jack Tubbs. (2018). Beta Regression for Modeling a Covariate Adjusted ROC. Science Journal of Applied Mathematics and Statistics, 6(4), 110-118. https://doi.org/10.11648/j.sjams.20180604.11
ACS Style
Sarah Stanley; Jack Tubbs. Beta Regression for Modeling a Covariate Adjusted ROC. Sci. J. Appl. Math. Stat. 2018, 6(4), 110-118. doi: 10.11648/j.sjams.20180604.11
AMA Style
Sarah Stanley, Jack Tubbs. Beta Regression for Modeling a Covariate Adjusted ROC. Sci J Appl Math Stat. 2018;6(4):110-118. doi: 10.11648/j.sjams.20180604.11
@article{10.11648/j.sjams.20180604.11, author = {Sarah Stanley and Jack Tubbs}, title = {Beta Regression for Modeling a Covariate Adjusted ROC}, journal = {Science Journal of Applied Mathematics and Statistics}, volume = {6}, number = {4}, pages = {110-118}, doi = {10.11648/j.sjams.20180604.11}, url = {https://doi.org/10.11648/j.sjams.20180604.11}, eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.sjams.20180604.11}, abstract = {Background: Several regression methodologies have been developed to model the ROC as a function of covariate effects within the generalized linear model (GLM) framework. In this article, we present an alternative to two existing parametric and semi-parametric methods for estimating a covariate adjusted ROC. The existing methods utilize GLMs for binary data when the expected value equals the probability that the test result for a diseased subject exceeds that of a non-diseased subject with the same covariate values. This probability is referred to as the placement value. Objective: The new method directly models the placement values through beta regression. Methods: We compare the proposed method to the existing models with simulation and a clinical study. Conclusion: The proposed method performs favorably with the commonly used parametric method and has better performance than the semi-parametric method when modeling the covariate adjusted ROC regression.}, year = {2018} }
TY - JOUR T1 - Beta Regression for Modeling a Covariate Adjusted ROC AU - Sarah Stanley AU - Jack Tubbs Y1 - 2018/09/11 PY - 2018 N1 - https://doi.org/10.11648/j.sjams.20180604.11 DO - 10.11648/j.sjams.20180604.11 T2 - Science Journal of Applied Mathematics and Statistics JF - Science Journal of Applied Mathematics and Statistics JO - Science Journal of Applied Mathematics and Statistics SP - 110 EP - 118 PB - Science Publishing Group SN - 2376-9513 UR - https://doi.org/10.11648/j.sjams.20180604.11 AB - Background: Several regression methodologies have been developed to model the ROC as a function of covariate effects within the generalized linear model (GLM) framework. In this article, we present an alternative to two existing parametric and semi-parametric methods for estimating a covariate adjusted ROC. The existing methods utilize GLMs for binary data when the expected value equals the probability that the test result for a diseased subject exceeds that of a non-diseased subject with the same covariate values. This probability is referred to as the placement value. Objective: The new method directly models the placement values through beta regression. Methods: We compare the proposed method to the existing models with simulation and a clinical study. Conclusion: The proposed method performs favorably with the commonly used parametric method and has better performance than the semi-parametric method when modeling the covariate adjusted ROC regression. VL - 6 IS - 4 ER -