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date: 06 March 2021

Abstract and Keywords

This article discusses Bayesian approaches to aspects of the Vioxx trials study, with a focus on non-ignorable dropout and sequential meta-analysis. It first provides a background on Vioxx, a COX-2 selective, non-steroidal anti-inflammatory drug (NSAID) approved by the FDA in May 1999 for the relief of the signs and symptoms of osteoarthritis, the management of acute pain in adults, and for the treatment of menstrual symptoms. However, Vioxx was found to cause an array of cardiovascular side-effects such as myocardial infarction, stroke, and unstable angina. As a result, Vioxx was withdrawn from the market. The article describes an approach to sequential meta-analysis in the context of Vioxx before considering dropouts in the key APPROVe study. It also presents a Bayesian approach to handling dropout and showcases the utility of Bayesian analysis in addressing multiple, challenging statistical issues and questions arising from clinical trials.

Keywords: Vioxx trials study, non-ignorable dropout, sequential meta-analysis, Vioxx, APPROVe study, Bayesian analysis, clinical trials

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