I read the article, and this is what does not make sense to me, their conclusion is: "Researchers collected data from the 50 countries with the most cases and found lockdowns were not associated with mortality reductions in critical COVID-19 cases, although factors such as obesity, smoking, and life expectancy were." They are saying that the number of critical COVID cases that end up in death is not effected by whether there is a lockdown or not. Huh? Why in the world would you expect that it should? This seems to me to be a case of an author of the paper who had an opinion and searched for a way to present data that on the surface seemed to support what he wanted to claim. It is completely meaningless to compare the percentage of critical cases that end up in death.