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Chris Said
@csaid.bsky.social
Data science at Propel. Formerly Stitch Fix, Opendoor, Twitter, Facebook, neuroscience.
89 followers76 following64 posts
CScsaid.bsky.social

Are you a scientist with $10 million dollars lying around? If so, run this experiment! It would: - Conclusively establish the viral counts at which people become meaningfully infectious - Conclusively quantify the effectiveness of ventilation / masks chris-said.io/2024/02/11/t...

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CScsaid.bsky.social

Given how hard it is to control unobservables, any maternal health study that doesn’t use a good instrument should probably be ignored until a better study arrives.

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CScsaid.bsky.social

4. Antidepressants were linked to offspring Autism/ASD. But the effect goes away in a sibling control analysis. www.bmj.com/content/358/...

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CScsaid.bsky.social

3. Infections during pregnancy were linked to ADHD and ASD. But when you look at infections 1 or 2 years *before* pregnancy, you see the same relationship. It must be spurious. www.cremieux.xyz/p/wanted-mor...

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CScsaid.bsky.social

2. Epidurals were associated with ADHD and autism, even after covariate adjustment. But the effect disappears in sibling control studies. www.cremieux.xyz/p/wanted-mor...

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CScsaid.bsky.social

Thread of questionable maternal health research that caused needless panic. 1. Breastfeeding was linked to higher offspring IQ. But the effect disappears in sibling control studies (same mother breastfeeds one child but not the other) toktopics.com/2023/03/24/w...

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CScsaid.bsky.social

Half doses of Covid vaccines cause 20-30% lower side effects than full doses, while still producing just as many antibodies. Somebody needs to run this RCT with a 1/10 dose. www.thelancet.com/journals/lan...

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CScsaid.bsky.social

God bless the CVS pharmacist who quietly agreed to give me a half dose of the Covid vaccine so I wouldn't get a fever for two days like I usually do.

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CScsaid.bsky.social

Yet another prolific Alzheimer’s researcher accused of flagrant years-long fraud. Impossible to see these cases and not conclude fraud is endemic. www.science.org/content/arti...

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CS
Chris Said
@csaid.bsky.social
Data science at Propel. Formerly Stitch Fix, Opendoor, Twitter, Facebook, neuroscience.
89 followers76 following64 posts