China
Review
0
PubMed and Embase were searched for records published between December 1, 2019 and March 20, 2020.
The relationship of COVID-19 severity with cardiovascular disease and its traditional risk factors: A systematic review and meta-analysis, 3 studies used: Guan, CDC, Zhou
COVID-19 (severe/critical)
COVID-19 (critical)
Patient characteristics
Smoking
Current smoker
Not present
Present
Odds ratio
1.770 (0.780-4.020)
No
pooled odds ratio
review
Average
Yes