New meta-analysis of 18 studies finds that smokers are *82% less likely* to be hospitalised with COVID-19 than nonsmokers.https://www.mdpi.com/1660-4601/17/20/7394/htm …
Nope, they explicitly say that they could not adjust for age and instead used mean values due to the heterogeneity of study designpic.twitter.com/zjzmp4IJ6J
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Ha! That is a bit basic.
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Their design doesn't really allow for the examination of their question regardless. What you'd need to do to see if smoking was protective is follow people through time, not just aggregate cross-sectional data in this way
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