Study/Database Clinical System Study Cohort COVID-19 Deaths
i. OpenSAFELY [1]TPP SystmOne17 million adults10,926 deaths
ii. U.K. Biobank [2]Multiple341,484 volunteers203 hospital deaths
iii. QResearch [3]Hospitals6.08 million adults4,384 deaths
iv. ISARIC [4]Hospitals35,463 hospital patients11,426 hospital deaths