Bayesian Sample Size Determination Using Commensurate Priors to Leverage Preexperimental Data

URN to cite this document:: urn:nbn:de:bvb:355-epub-778478
DOI to cite this document:: 10.5283/epub.77847

Zheng, Haiyan ; Jaki, Thomas

; Wason, James M.S.

License: Creative Commons Attribution 4.0
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Date of publication of this fulltext: 29 Sep 2025 06:35

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Abstract

This paper develops Bayesian sample size formulae for experiments comparing two groups, where relevant preexperimental information from multiple sources can be incorporated in a robust prior to support both the design and analysis. We use commensurate predictive priors for borrowing of information and further place Gamma mixture priors on the precisions to account for preliminary belief about the ...