China
Retrospective cohort study
Medical records
449
Consecutive patients with severe COVID-19
181 females and 268 males. The mean age at disease onset was 65.1 years
Total
28 Day
COVID-19 (death)
134
Died within 28 days
Treatment
Treatment for COVID-19
none
Not received
Treated with heparin (patients with SIC score >=4)
Odds ratio
0.370 (0.150-0.900)
Yes
No
Not applicable
Stratified analysis was performed. Only patients with SIC score >=4 were included (n=97) Number of cases and total number of patients in the reference/comparison category not available
Good