I find it incredibly hard to interpret such data, and I wish...

I find it incredibly hard to interpret such data, and I wish that they compile this table after all the outcome is known. As you can see from the table the majority of the patients are still in ICU, assuming that at the end of the study period, the ICU patients = newly administered patients + those that have been there for some time. The mortality rates for the two groups might be totally different. It is likely, and only logical, that the longer a patient stays in the ICU, the direr their prognosis. You can even see evidence of this happening from the table:

For example: China (still in ICU: 14%, Mortality 38%), vs Spain (ICU: 44%, Mort: 29%), vs USA (ICU: 66%, Mort: 23%); the same trend for all other countries. To take the current average Mortality of 25.7% (or 30%) is clearly too optimistic and assumes that the remaining 56.1% of patients still in ICU will survive.

They should only report the period of time where all the outcome from patients are known and report the actual mortality rate. Even if this number will NOT reflect the most current practice in hospitals procedures and treatments.