Abstract
Achieving comprehensive patient centricity in cost-effectiveness analyses (CEAs) requires a statistical approach that accounts for patients’ preferences and clinical and demographic characteristics. Increased availability and accessibility of patient-level health-related utility data from clinical trials or observational database provide enhanced opportunities to conduct more patient-centered CEA. Regression-based approaches that incorporate patient-level data hold great promise for enhancing CEAs to be more patient centered; this paper provides guidance regarding two CEA approaches that apply regression-based approaches utilizing patient-level health-related utility and costs data. The first approach utilizes patient-reported preferences to determine patient-specific utility. This approach evaluates how individuals’ unique clinical and demographic factors affect their utility and cost levels over the course of treatment. The underlying motivation of this approach is to produce CEA estimates that reflect patient-level utilities and costs while adjusting for socio-demographic and clinical factors to aid patient-centered coverage and treatment decision-making. In the second approach, patient utilities are estimated based on the clinically defined health states through which a patient may transition throughout the course of treatment. While this approach is grounded on the widely used Markov transition model, we refine the model to facilitate an enhancement in conducting regression-based analysis to achieve transparent understanding of differences in utilities and costs across diverse patient populations. We discuss the unique statistical challenges of each approach and describe how these analytical strategies are related to non-regression-based models in health services research.
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Acknowledgements
This study was funded by Novartis AG. The authors would like to thank Kimberly Yang and Katherine Downton of the University of Maryland Health Sciences and Human Services Library for their assistance with the literature review, and Stephane Regnier at Novartis AG for his review of the manuscript.
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DG, YCTS, PL, MO, and CDM drafted the mathematical models with input from CU and YP. DG, CU, and YP conducted the literature review with input from YCTS, PL, MO, and CDM. DG, YCTS, and CDM wrote the manuscript with input from MO, PL, CU, and YP. All authors contributed equally to the review and editing of this manuscript.
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This study was author-initiated and funded by Novartis International AG.
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C. Daniel Mullins and Daisuke Goto received research funding from Novartis International AG. Ya-Chen Tina Shih served as a paid consultant to the University of Maryland on a grant funded by Novartis International AG for work related to this manuscript. Pascal Lecomte and Melvin Olson are employees of Novartis International AG. Yu** Park is an employee of Novartis Pharmaceutical Corp. in the USA Chukwukadibia Udeze has nothing to disclose.
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Daisuke Goto serves as overall guarantor for this study and article.
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This is a guidance document and formal consent is not required. Therefore, we did not submit our study to an independent ethics committee or institutional review board. This article does not contain any studies with human participants or animals performed by any of the authors.
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Goto, D., Shih, YC.T., Lecomte, P. et al. Regression-Based Approaches to Patient-Centered Cost-Effectiveness Analysis. PharmacoEconomics 35, 685–695 (2017). https://doi.org/10.1007/s40273-017-0505-5
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DOI: https://doi.org/10.1007/s40273-017-0505-5