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Confidence interval coverage based on a random effects meta‐analysis fit using REML for balanced studies with a large degree of heterogeneity ν = 10 (left) and low degree of heterogeneity ν = 0.1 (right), for each of the different methods. Methods: N, conventional method; HK, Hartung–Knapp; HK2, modified Hartung–Knapp; KR, Kenward–Roger; REML, restricted maximum likelihood; SJ, Siddik–Jonkman; SJ2, modified Sidik–Jonkman.
