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Peer-reviewed

Improving the visualization, interpretation and analysis of two-sample summary data Mendelian randomization via the Radial plot and Radial regression

Jack Bowden, Wes Spiller, Fabiola Del Greco M, Nuala A. Sheehan, John R. Thompson, Cosetta Minelli, George Davey Smith

International Journal of Epidemiology · 2018

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Summary

Background: data furnishing a two-sample Mendelian randomization (MR) study are often visualized with the aid of a scatter plot, in which single-nucleotide polymorphism (SNP)-outcome associations are plotted against the SNP-exposure associations to provide an immediate picture of the causal-effect estimate for each individual variant. It is also convenient to overlay the standard inverse-variance weighted (IVW) estimate of causal effect as a fitted slope, to see whether an individual SNP provides evidence that supports, or conflicts with, the overall consensus. Unfortunately, the traditional scatter plot is not the most appropriate means to achieve this aim whenever SNP-outcome associations are estimated with varying degrees of precision and this is reflected in the analysis. Methods: We p

Source type
Peer-reviewed study
DOI
10.1093/ije/dyy101
Catalogue ID
BFmokjo8sc-mi5jsz
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