https://www.theguardian.com/science/2021/apr/22/scientific-paper-claiming-smokers-less-likely-to-acquire-covid-retracted-over-tobacco-industry-links
A scientific paper claiming current smokers are 23% less likely to be diagnosed with Covid-19 compared to non-smokers has been retracted by a medical journal, after it was discovered some of the paper’s authors had financial links to the tobacco industry.
But the paper, published in July last year by the European Respiratory Journal, found “current smoking was not associated with adverse outcome” in patients admitted to hospital with Covid, and claimed smokers were at a significantly lower risk of acquiring the virus. The paper was reported on by several mainstream media outlets.
An analysis for the journal BMJ Evidence-Based Medicine “identified several biases and knowledge gaps which may give the false impression that smoking is protective in Covid-19”.
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