Meta-analysis(6) COVID-19(6) risk(5) death(5) Cerebrovascular disease(5) Chinese(5) cardio-cerebrovascular disease(5) collected(5) Egger’s test(5) Diabetes Mellitus(5) hypertension(5) COVID-19 mortality(5) Science(5) CNKI(5) shown(5) were used(5) severity(5) cardiovascular disease(5) disease(5) COVID-19 patient(5) subgroup analysis(5) severity; mortality(5) review(5) reported(5) COVID-19 severity(5) Patient(5) Odds ratio(5) 95% CI(5) funnel plot(5) was used(5)