Title |
Inference for the Cost-Effectiveness Acceptability Curve and Cost-Effectiveness Ratio
|
---|---|
Published in |
PharmacoEconomics, October 2012
|
DOI | 10.2165/00019053-200017040-00004 |
Pubmed ID | |
Authors |
Anthony O’Hagan, John W. Stevens, Jacques Montmartin |
Abstract |
The aim of this article is to consider Bayesian and frequentist inference methods for measures of incremental cost effectiveness in data obtained via a clinical trial. The most useful measure is the cost-effectiveness (C/E) acceptability curve. Recent publications on Bayesian estimation have assumed a normal posterior distribution, which ignores uncertainty in estimated variances, and suggest unnecessarily complicated methods of computation. We present a simple Bayesian computation for the C/E acceptability curve and a simple frequentist analogue. Our approach takes account of errors in estimated variances, resulting in calculations that are based on distributions rather than normal distributions. If inference is required about the C/E ratio, we argue that the standard frequentist procedures give unreliable or misleading inferences, and present instead a Bayesian interval. |
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