What's strange is that they didn't control for obesity or occupation. It's known that being more obese leads to worse symptoms. It's known that chance of infect

What's strange is that they didn't control for obesity or occupation. It's known that being more obese leads to worse symptoms. It's known that chance of infection is higher among retail workers and such, who have lower IQs than people working from home. The IQ correlation in this study is: Covid, no respiratory difficulty: 0.4 IQ point loss Covid, respiratory difficulty, no home assistance: 1 IQ point loss Covid, respiratory difficulty, with home assistance: 2 IQ point loss Covid, hospitalized, without ventilation: 4 IQ point loss Covid, hospitalized, with ventilation: 7 IQ point loss Let's ignore the respirator segment because lack of oxygen like that can surely cause problems and I don't think anyone is really arguing against it. Without a before test, the only thing this study can reasonably show (if you call 1IQ point showing anything) is that fat people or cashiers are ever so slightly less intelligent. Honesty people, I was expecting on the order of 5-10 IQ points from the popularity and activity of this article. An average of 1IQ in a study with no control group and no pre-post test? Come on.