I edited the section to include some more thoughts on the paper’s quality. In brief, I expect a 2x diminishment over time (though this was conservative and it could easily be larger); I expect the selection bias is definitely real, though there’s a countervailing effect from most of the COVID cases being self-reports which I expect means higher conscientiousness and many missed cases from the group otherwise being selected for; I also think the ventilator impairment matches well with other evidence we have about ventilator impairment and is probably not a large overestimate, though this may not shed much light on the smaller disease burden impairment integrity; and I hadn’t noticed the age difference, thanks a lot for pointing that out!
In another comment, I discuss what seems like a big limitation of the paper.
I edited the section to include some more thoughts on the paper’s quality. In brief, I expect a 2x diminishment over time (though this was conservative and it could easily be larger); I expect the selection bias is definitely real, though there’s a countervailing effect from most of the COVID cases being self-reports which I expect means higher conscientiousness and many missed cases from the group otherwise being selected for; I also think the ventilator impairment matches well with other evidence we have about ventilator impairment and is probably not a large overestimate, though this may not shed much light on the smaller disease burden impairment integrity; and I hadn’t noticed the age difference, thanks a lot for pointing that out!