[R-meta] mixed-effects and moderators

[Fred Oswald]

Hello, and apologies if this has been addressed before: For a mixed-effects
model in metafor, how does one estimate the amount of heterogeneity
accounted for by continuous moderators (tau^2_mod)? Maybe use the
closed-form D-L estimate from Q_M?

Otherwise, deriving this from the output is not obvious to me (e.g., I2 is
based on tau^2_res, and R2 assumed fixed effects).

Also, presumably tau^2_total = tau^2_mod + tau^2_res…yes?

Thank you for any support! Fred
-- 
Best,
Fred Oswald

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