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Martin Plöderl

@ploederl.bsky.social

1k Following2k Followers

Clinical psychologist and psychotherapist, part-time researcher with a focus on suicide prevention and psychopharmacology.
https://ploederlm.github.io/publications/
https://scholar.google.at/citations?user=76cO6AEAAAAJ&hl=de
Nature, espresso, cycling.

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@ploederl.bsky.socialOct 10, 2026, 7:56 AM

Time for a re-tweet

@ploederl.bsky.socialOct 9, 2026, 4:22 PM

Gratulation, Hochwürden! 😉

@resurgequality.bsky.socialOct 9, 2026, 10:59 AMReposted by @ploederl.bsky.social

No matter what they decide about clinical significance, not correcting it is definitely not the way to go.

@ploederl.bsky.socialOct 9, 2026, 9:46 AM

Thanks for notifying about this! Fully agree with your comments.

@ploederl.bsky.socialOct 7, 2026, 2:48 PM

But the German guidelines conclude that there is "strong evidence" that fluoxetine, sertraline, and escitalopram reduce depression symptoms.
See here (in German):
madindeutschland.org/problematisc...

@ploederl.bsky.socialOct 7, 2026, 8:18 AM

That Attari was not rated as high ROB even in the "other" domain is problematic. Does the REB safeguard for "zombie" trials?

@richvn.bsky.socialOct 2, 2026, 2:39 PMReposted by @ploederl.bsky.social

NEW: researchers say one 'zombie' study in Iran, 20 years ago, has skewed the world's medical evidence base for using Prozac to treat depression in children.

They stop short of saying don't use Prozac this way, but want clinical guidelines revised.

@nature.com
www.nature.com/articles/d41...

@ploederl.bsky.socialOct 4, 2026, 10:49 AM

Interesting thread of @literalbanana.bsky.social on X about our recent zombie-study in the wider context surrounding efficacy of antidepressants for children and adolescents. Thanks!
twitter-thread.com/t/1974884739...

@floriannaudet.bsky.social

@ploederl.bsky.socialOct 3, 2026, 9:06 AM

Ooops, here is the link:
mmmdata.io/posts/2025/0...

@floriannaudet.bsky.socialOct 3, 2026, 7:51 AMReposted by @ploederl.bsky.social

🍫 or 💩? About the effect size reported in a trial that shaped the estimated effect of fluoxetine in meta-analyses of pediatric depression, my stellar co-author @ploederl.bsky.social says: “It’s the kind of effect size you only get if you ask people whether they prefer chocolate or faeces.” 👇👇👇

@ploederl.bsky.socialOct 3, 2026, 8:13 AM

See this excellent blog by @ianhussey.mmmdata.io
for background on implausible effect sizes, including the reference to the 🍫 vs. 💩 study.
We thought of including this comparison in the paper but did not, in order to avoid being all too provocative and rejected

@drjacekdebiec.bsky.socialOct 3, 2026, 3:11 AMReposted by @ploederl.bsky.social

“The main argument for using antidepressants in children is that they are better than nothing. The evidence shows otherwise”.

www.nature.com/articles/d41...

@ploederl.bsky.socialOct 3, 2026, 6:50 AM

Thank you, Jacek! 🙏

@ploederl.bsky.socialOct 2, 2026, 8:10 PM

Thanks, Erick!

@floriannaudet.bsky.socialOct 2, 2026, 4:44 PMReposted by @ploederl.bsky.social

🔥 OUR STUDY FEATURED IN NATURE NEWS What if one flawed zombie trial 🧟 helped shape the evidence for treating depression in children? Quote : "Elia Abi-Jaoude, [...] calls the paper a “slam-dunk study”. “I hope it will get wide exposure” he says."

@ploederl.bsky.socialOct 2, 2026, 3:46 PM

Our new paper is also feated in Nature news:
www.nature.com/articles/d41...

@ploederl.bsky.socialOct 2, 2026, 3:46 PM

Thanks for covering this so decently!

@richvn.bsky.socialOct 2, 2026, 2:39 PMReposted by @ploederl.bsky.social

@floriannaudet.bsky.social, @ploederl.bsky.social and others found the change comes down to whether the meta-analyses happend to include a particular clinical trial on 40 children in Iran from 2006.

This one trial found an unfeasibly huge advantage for Prozac over another antidepressant.

@ploederl.bsky.socialOct 1, 2026, 9:46 AM

36/ Instead, we believe that the corrected results of the NMAs need to be published, ideally in the journals where the NMAs appeared. This way guideline committees, clinicians, and patients have access to more reliable estimations of efficacy.

@ploederl.bsky.socialOct 1, 2026, 9:46 AM

35/ Second, even if the zombie trial is retracted/corrected, how will the impact of this study be known if the evidence syntheses in which it is included are unchanged?

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