Including historical data in the analysis of clinical trials: Is it worth the effort?

• Published in: Statistical methods in medical research Vol. 27; no. 10; pp. 3167 - 3182
• Main Authors: van Rosmalen, Joost, Dejardin, David, van Norden, Yvette, Löwenberg, Bob, Lesaffre, Emmanuel
• Format: Journal Article
• Language: English
• Published: London, England SAGE Publications 01.10.2018
• Subjects: power prior; meta-analytic-predictive prior; historical data; Bayesian statistics; commensurate prior
• ISSN: 0962-2802; 1477-0334
• DOI: 10.1177/0962280217694506

Data of previous trials with a similar setting are often available in the analysis of clinical trials. Several Bayesian methods have been proposed for including historical data as prior information in the analysis of the current trial, such as the (modified) power prior, the (robust) meta-analytic-predictive prior, the commensurate prior and methods proposed by Pocock and Murray et al. We compared these methods and illustrated their use in a practical setting, including an assessment of the comparability of the current and the historical data. The motivating data set consists of randomised controlled trials for acute myeloid leukaemia. A simulation study was used to compare the methods in terms of bias, precision, power and type I error rate. Methods that estimate parameters for the between-trial heterogeneity generally offer the best trade-off of power, precision and type I error, with the meta-analytic-predictive prior being the most promising method. The results show that it can be feasible to include historical data in the analysis of clinical trials, if an appropriate method is used to estimate the heterogeneity between trials, and the historical data satisfy criteria for comparability.