It goes beyond that. I keep seeing claims that meta-analysis smooths out out even eliminates bias in the underlying research. People seem oblivious to the concept of “garbage in, garbage out.”https://twitter.com/GidMK/status/1420529664129261569 …
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Replying to @gorskon @Rosewind2007
I think they fixate on the idea that meta-analysis can smooth out heterogeneous issues with individual studies and forget that bias can be (and usually is) systematic across wide swathes of studies.
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Replying to @ChthonicQueex @Rosewind2007
Sure. They seem to think that smoothing out randomness in studies that don't have a high degree of bias is the same thing as eliminating bias. Again, garbage in, garbage out. Meta-analysis can't magically turn a bunch of turds into a gold ingot.
5:14 AM - 29 Jul 2021
1 reply
5 retweets
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