Displaying 1 result from an estimated 1 matches for "varlogratio".
2012 Sep 07
2
metafor package: study level variation
...effect I'm looking at is response to two different kinds of drug treatment - let's call their effect sizes T1 and T2. Some studies have multiple experiments measuring T1 and T2. Some have one of each. Some only have T1 or T2.
Now, in metafor, I've been using
rma(yi = logRatio, vi=varLogRatio, mods=~ Drug.Type, data=mydata)
This works fine. Out of curiosity, I ran a quickie model in lme4
lmer(logRatio ~ Drug.Type + (1+studyID), data=mydata, weights=varLogRatio)
and I noticed that the results are quite different, and this appears due to some variation due to study (after inspecting r...