During Delta we divided Covid ICU by all for-Covid admissions, but now we’re dividing Covid ICU by for-Covid and a bunch of other people who didn’t know they had Covid. Inflate denominator -> deflate severity
But if that's the case, for proportionately more people arriving with co-unknown incidental covid, that requires that the community case rates of unknown covid must be proportionately much higher - otherwise the same random sampling of unrelated issues would've turned up last time. So is this analysis correct? (of course it suggests that the case rates need to be even higher and the detection rates are lower in the community)
First, if a chunk of Covid+ patients are not in for Covid and would have been admitted anyway, then they are not adding to hospital pressure. Say 70% are admitted for Covid, creating additional load, but maybe 30% are not
This assumes the coincidental covid does nothing to impact their treatment - this is surely not sustainable for all of the cases, even if it is some, and even those with simply a broken arm or similar would still need different treatment due to hot/cold ward issues.