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A comparison of approaches to estimating confidence intervals for willingness to pay measures

By A.R. Hole

Abstract

This paper describes three approaches to estimating confidence intervals for willingness to pay\ud measures, the delta, Krinsky and Robb and bootstrap methods. The accuracy of the various\ud methods is compared using a number of simulated datasets. In the majority of the scenarios\ud considered all three methods are found to be reasonably accurate as well as yielding similar\ud results. The delta method is the most accurate when the data is well-conditioned, while the\ud bootstrap is more robust to noisy data and misspecification of the model. These conclusions are\ud illustrated by empirical data from a study of willingness to pay for a reduction in waiting time for a\ud general practitioner appointment in which all the methods produce fairly similar confidence\ud intervals

Publisher: Centre for Health Economics
Year: 2006
OAI identifier: oai:eprints.whiterose.ac.uk:1181

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