>Finally, the absolute risk of post-discharge adverse events was greater for individuals aged 70 years than 70 years, and for individuals of White ethnic background than in the Non-White group. However, when contrasted against the background rates of adverse events that might be expected to occur in these groups in the general population, younger and ethnic minority individuals faced greater relative risks than those aged 70 years and those in the White group, respectively.
So they found that if you have known comorbidities, you'll have worse outcomes. That's it.
So you consider being aged under 70 a comorbidity? Quite the hot take.
That is a very strange summary of those findings. 30% of the covid group were readmitted versus 10% of the control group (matched on age, sex, ethnicity, region, Index of Multiple Deprivation quintile, smoking status, and clinical histories of hypertension, major adverse cardiovascular event, respiratory disease, chronic kidney disease, chronic liver disease, diabetes, cancer) were readmitted. 12% of the covid group died versus 2% of the control group.
If their methodology and statistics are valid (it isn't peer reviewed yet, and I'm certainly not an expert on that) those are reasonably large increases that has nothing to do with "if you have known comorbidities you'll have worse outcomes". It's possibly useful information to have for places with large numbers of covid patients in hospitable at the moment - they might need more resources than they would expect and that will overlap with new cases in places where case numbers are not being brought under control.