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
Laboratory Findings
Platelet count
none
Not applicable
1 unit increase
Odds ratio
1.000 (0.990-1.000)
Yes
No
risk was adjusted for age, sex ratio, underlying disease, treating with heparin, prothrombin time, and D-dimer
Timing of laboratory assessment not specified
Good