Model Selection and Estimation with Quantal‐Response Data in Benchmark Risk Assessment

Edsel A. Peña, Wensong Wu, Walter Piegorsch, Ronald W. West and LingLing An

Risk Analysis, 2017, vol. 37, issue 4, 716-732

Abstract: This article describes several approaches for estimating the benchmark dose (BMD) in a risk assessment study with quantal dose‐response data and when there are competing model classes for the dose‐response function. Strategies involving a two‐step approach, a model‐averaging approach, a focused‐inference approach, and a nonparametric approach based on a PAVA‐based estimator of the dose‐response function are described and compared. Attention is raised to the perils involved in data “double‐dipping” and the need to adjust for the model‐selection stage in the estimation procedure. Simulation results are presented comparing the performance of five model selectors and eight BMD estimators. An illustration using a real quantal‐response data set from a carcinogenecity study is provided.

Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:wly:riskan:v:37:y:2017:i:4:p:716-732

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