Something that I keep seeing pop up is the idea that meta-analysis somehow eliminates issues with the underlying research This is just confusingly incorrect
That is not true actually. Meta-analyses can be biased by bad studies in a number of ways, often to do with the weighting. Sometimes a single bad study can push the entire model in a single direction
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The rest of your statement confuses me. I talk all the time about bad study design, but *this* conversation is about meta-analysis
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