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I have a 5 study dataset with 2 IRRs, 2 ORs and 1 HR, all with CIs given. Can I do a log transformation and then conduct a meta analysis. What is a plausible way to conduct meta analysis in this case

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    $\begingroup$ It is hard to compare the three, which is one reason to only use individual subject-level meta analysis where you can recompute whatever index you want. $\endgroup$ Oct 21, 2021 at 11:30
  • $\begingroup$ You can refer to this earlier post for OR to RR conversion (and viceversa): stats.stackexchange.com/questions/131416/… HR are roughly an estimator of RR, so you might consider them equivalent However, if follow-up time varies, probably the most robust approach is to compute IRR $\endgroup$ Oct 22, 2021 at 10:44

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