this post was submitted on 14 Apr 2024
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Breaking Down Cass Review Myths and Misconceptions: What You Need to Know – The Quackometer (www.quackometer.net)
submitted 6 months ago by Streetlights@lemmy.world to c/skeptic@lemmy.world
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Seen the "98% of studies were ignored!" one doing the rounds on social media. The editorial in the BMJ put it in much better terms:

"One emerging criticism of the Cass review is that it set the methodological bar too high for research to be included in its analysis and discarded too many studies on the basis of quality. In fact, the reality is different: studies in gender medicine fall woefully short in terms of methodological rigour; the methodological bar for gender medicine studies was set too low, generating research findings that are therefore hard to interpret."

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[–] Streetlights@lemmy.world -1 points 6 months ago* (last edited 6 months ago)

You can't say she's lying until we do a systemic review of why the Cass study dismissed everything but 2 studies

This is the lie. They didn't dismiss all but two studies, they actually included 60. More than half of the 103 studies identified for the review.

So yes, Erin, and now yourself, are peddling a lie.

What I can tell you is that dismissing that many studies is not normal scientific analysis.

It's key part of synthesising multiple sources into a meta-analysis. Including poor quality studies dilutes the quality of the overall analysis.

It reeks of bias.

By design, it's biased towards higher quality research.