Isolating cost drivers in interstitial lung disease treatment using nonparametric Bayesian methods

Abstract: Mixture modeling is a popular approach to accommodate overdispersion, skewness, and multimodality features that are very common for health care utilization data. However, mixture modeling tends to rely on subjective judgment regarding the appropriate number of mixture components or some hypothesis about how to cluster the data. In this work, we adopt a nonparametric, variational Bayesian approach to allow the model to select the number of components while estimating their parameters. Our model allows for a probabilistic classification of observations into clusters and simultaneous estimation of a Gaussian regression model within each cluster. When we apply this approach to data on patients with interstitial lung disease, we find distinct subgroups of patients with differences in means and variances of health care costs, health and treatment covariates, and relationships between covariates and costs. The subgroups identified are readily interpretable, suggesting that this nonparametric variational approach to inference can discover valid insights into the factors driving treatment costs. Moreover, the learning algorithm we employed is very fast and scalable, which should make the technique accessible for a broad range of applications.

Location
Deutsche Nationalbibliothek Frankfurt am Main
Extent
Online-Ressource
Language
Englisch

Bibliographic citation
Isolating cost drivers in interstitial lung disease treatment using nonparametric Bayesian methods ; volume:62 ; number:8 ; year:2020 ; pages:1896-1908 ; extent:13
Biometrical journal ; 62, Heft 8 (2020), 1896-1908 (gesamt 13)

Creator
Kurz, Christoph
Stafford, Seth

DOI
10.1002/bimj.202000076
URN
urn:nbn:de:101:1-2022070508543100392712
Rights
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Last update
15.08.2025, 7:27 AM CEST

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