Very TLDR: If you're unlucky enough to get into ICU because of Covid-19, your average survival odds (life/death) are about 76/24 for 16-49yo , 54/46 for 50-69yo , 32/68 for 70+yo. Odds get worse if you're male and obese with comorbidities. And odds get terribly worse if you get to the invasive respiratory support stage (intubation/ECMO).