We now have data from New York, China, Wuhan on how patients with severe covid fared and can make rough comparisons on key clinical measures. Intubation and mortality higher in New York, but U.S. patients seemed to decompensate more rapidly, perhaps reflecting more co-morbidities 
Among other notable findings, mortality for those requiring mechanical ventilation in New York was 88.1%. The median length of stay for those who died was 4.8 days. The full study evaluating New York experience can be found here: jamanetwork.com/journals/jama/…
However, we need to be careful interpreting the data from the patients in the New York series since the denominator is still not settled -- the rates can change perhaps significantly depending on what happens with the large number of patients still being treated.
