I re-read the studies originally included in this post looking for data relating illness severity to fever. Two of the studies compared the rate of fever in ICU vs non-ICU COVID-19 patients. This one finds 13⁄13 in ICU and 27⁄28 in non-ICU have fever; this one finds 36⁄36 in ICU and 100⁄102 non-ICU had fever. This study broke down its patients into a hospitalized subset in which 6⁄6 had fever and a non-hospitals subset in which 58.3% had fever; I had mis-read this one on the first pass when writing the post, and wrote down the percent with fever in the hospitalized subset (100%).
This does seem to be consistent with fever being more common among the subset of patients which are severe enough to be hospitalized. I have edited the post to reflect this interpretation, and corrected the one study that was mis-extracted; you can see the old version of the post here. This weakens my belief that the rate of fever at onset has already declined, though I still think it is somewhat likely, and I still expect it to decline in the future.
I re-read the studies originally included in this post looking for data relating illness severity to fever. Two of the studies compared the rate of fever in ICU vs non-ICU COVID-19 patients. This one finds 13⁄13 in ICU and 27⁄28 in non-ICU have fever; this one finds 36⁄36 in ICU and 100⁄102 non-ICU had fever. This study broke down its patients into a hospitalized subset in which 6⁄6 had fever and a non-hospitals subset in which 58.3% had fever; I had mis-read this one on the first pass when writing the post, and wrote down the percent with fever in the hospitalized subset (100%).
This does seem to be consistent with fever being more common among the subset of patients which are severe enough to be hospitalized. I have edited the post to reflect this interpretation, and corrected the one study that was mis-extracted; you can see the old version of the post here. This weakens my belief that the rate of fever at onset has already declined, though I still think it is somewhat likely, and I still expect it to decline in the future.