[R-meta] Correcting Hedges' g vs. Log response ratio in nested studies

[Yuhang Hu]

Hello All,

I know that when correcting Hedges' g (i.e., bias-corrected SMD, aka "g")
in nested studies, we have to **BOTH** adjust our initial "g" and its
sampling variance "vi_g" (
https://ies.ed.gov/ncee/wwc/Docs/referenceresources/WWC-41-Supplement-508_09212020.pdf
).

But when correcting Log Response Ratios (LRR) in nested studies, we have to
**ONLY** adjust its initial sampling variance "vi_LRR" but not "LRR" itself
(https://stat.ethz.ch/pipermail/r-sig-meta-analysis/2021-October/003486.html
).

I wonder why the two methods of correction differ for Hedge's g and LRR?

Thanks,
Yuhang

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