Journal
EPIDEMIOLOGY AND HEALTH
Volume 41, Issue -, Pages -Publisher
KOREAN SOC EPIDEMIOLOGY
DOI: 10.4178/epih.e2019013
Keywords
Network meta-analysis; Multiple treatments meta-analysis; Mixed treatment comparison; Consistency; Transitivity; Bayes' theorem
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The objective of this study is to describe the general approaches to network meta-analysis that are available for quantitative data synthesis using R software. We conducted a network meta-analysis using two approaches: Bayesian and frequentist methods. The corresponding R packages were gemtc for the Bayesian approach and netmeta for the frequentist approach. In estimating a network meta-analysis model using a Bayesian framework, the rjags package is a common tool. rjags implements Markov chain Monte Carlo simulation with a graphical output. The estimated overall effect sizes, test for heterogeneity, moderator effects, and publication bias were reported using R software. The authors focus on two flexible models, Bayesian and frequentist, to determine overall effect sizes in network meta-analysis. This study focused on the practical methods of network meta-analysis rather than theoretical concepts, making the material easy to understand for Korean researchers who did not major in statistics. The authors hope that this study will help many Korean researchers to perform network meta-analyses and conduct related research more easily with R software.
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