Hong, C, Duan, R, Zeng, L, Hubbard, RA, Lumley, T, Riley, RD, Chu, H, Kimmel, SE and Chen, Y (2020) Galaxy Plot: A New Visualization Tool of Bivariate Meta-Analysis Studies. American Journal of Epidemiology. ISSN 1476-6256

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Funnel plots have been widely used to detect small study effects in the results of univariate meta-analyses. However, there is no existing visualization tool that is the counterpart of the funnel plot in the multivariate setting. We propose a new visualization method, the galaxy plot, which can simultaneously present the effect sizes of bivariate outcomes and their standard errors in a two-dimensional space. We illustrate the use of galaxy plot by two case studies, including a meta-analysis of hypertension trials with studies from 1979 to 1991, and a meta-analysis of structured telephone support or non-invasive telemonitoring with studies from 1966 to 2015. The galaxy plot is an intuitive visualization tool that can aid in interpretation of results of multivariate meta-analysis. It preserves all of the information presented by separate funnel plots for each outcome while elucidating more complex features that may only be revealed by examining the joint distribution of the bivariate outcomes.

Item Type: Article
Additional Information: The final version of this article can be found at; https://academic.oup.com/aje/advance-article/doi/10.1093/aje/kwz286/5701565
Uncontrolled Keywords: Galaxy, visualization, bivariate, meta-analysis
Subjects: H Social Sciences > H Social Sciences (General)
Q Science > Q Science (General)
Divisions: Faculty of Medicine and Health Sciences > School of Primary, Community and Social Care
Related URLs:
Depositing User: Symplectic
Date Deposited: 23 Jan 2020 16:51
Last Modified: 13 Jan 2021 01:30
URI: https://eprints.keele.ac.uk/id/eprint/7558

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