Retrospective observational study
275
mainland China outside of Hubei Province, from December 18th, 2019 to March 8, 2023
History of coronary heart disease increases the mortality rate of COVID-19 patients: a nested case-control study
0
COVID-19 (death)
Comorbidities
Stroke
Not present
Present
Hazard ratio
2.900 (1.400-5.800)
No
Yes