Advance age seems to be the most important factor determining the death rate due to COVID-19
Other common conditions that may increase the chance of death due to COVID-19 include:
Cardiovascular disease: >11 folds higher death rate than the general public
Diabetes = >8 folds higher death rate than the general public
Chronic respiratory disease = 7 folds higher death rate than the general public
Hypertension = >6 folds higher death rate than the general public
Cancer >6 fold higher death rate.
Source:
https://www.cebm.net/covid-19/global-covid-19-case-fatality-rates/