How can Convert RR to OR without incidence or probability (p)?

01 January 2017 1 4K Report

I have some studies in which some of them reported RR and other OR. To pooled them in meta-analysis how can convert RR to OR?

thanks

James Leigh

it would be better to work in terms of RR, assuming outcomes "rare" enough. So consider ORs as RRs.

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