Retrospective observational study
275
mainland China outside of Hubei Province, from December 18th, 2019 to March 8, 2020
History of coronary heart disease increases the mortality rate of COVID-19 patients: a nested case-control study
0
COVID-19 (death)
Patient characteristics
Gender
Female
Male
Hazard ratio
0.800 (0.500-1.200)
No