This is, in fact, wrong. Survivorship bias is very common and likely the cause herehttps://twitter.com/TheEconomist/status/1256005856698814464 …
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(This is one potential explanation, certainly not the only one)
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Very unsurprising
End of conversation
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Hmm, I dunno. The complicated thing about smoking is that it definitely kills people, and it is a potent cofactor, but it doesn't kill everyone who smokes. No question it's a highly suspect finding until we see more careful analysis.
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You know that's not true. Possibilities include smokers having much increased mucus-lining of their tracheas and lungs, they expectorate more and smoke kills bacteria and probably viruses. After giving up smoking people often get sore throats.
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There’s also the possibility the study has over-adjusted. Adjusting for underlying conditions that are independently related to smoking (eg heart disease) will change any estimate. Maybe authors should stratify by smoking status? Or be more selective about variables.
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I have seen nicotine brought up as a potential explanation. Here in Sweden there are a lot of people using snus instead of smoking Not nearly as bad as smoking for your health but it does give a lot of nicotine. It would be interesting if someone tried to see if the get less c19
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I've seen that proposed mechanism, but it has seemed so far like an explanation in need of a definite phenomenon. Would definitely be interesting to see tho
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