Hypertension is COVID-19 Top ICU Comorbidity

From JAMA

As you can see 58% of those in the ICU with "Wuhan" had hypertension AKA High blood pressure. African-Americans tend to have HBP so those persons may want to evaluate their risks.

Next up was cardio vascular disease, I assume to be things like emphysema, and diabetes. This would indicate that smokers would be at a higher risk.

Also note white blood cell counts:

and Lymphocyte count:

Seems to me that an early crash in lymphocyte count is a significant indicator of pending death. Perhaps early screenings for lymphocytes could be used to determine who should get early aggressive treatments rather than waiting (if they are waiting).

Lastly, the blood urea and creatnine counts at late stages probably indicates onset of kidney failure.