Abstract
Context: COVID-19 severe manifestations must be detected as soon as possible. One of the essential poor characteristics is the
involvement of coagulopathy. Simple coagulation parameters, including prothrombin time (PT), international normalized ratio
(INR), activated partial thromboplastin time (aPTT), and platelet, are widely accessible in many health centers.
Objectives: This meta-analysis aimed to determine the association between simple coagulation profiles and COVID-19 in-hospital
mortality.
Method: We systematically searched five databases for studies measuring simple coagulation parameters in COVID-19 on admission. The random-effects and inverse-variance weighting were used in the study, which used a standardized-mean difference of
coagulation profile values. The odds ratios were computed using the Mantel-Haenszel formula for dichotomous variables.
Results: This meta-analysis comprised a total of 30 studies (9,175 patients). In our meta-analysis, we found that non-survivors had a
lower platelet count [SMD = -0.56 (95% CI: -0.79 to -0.33), P < 0.01; OR = 3.00 (95% CI: 1.66 to 5.41), P < 0.01], prolonged PT [SMD = 1.22
(95%CI: 0.71 to 1.72), P < 0.01; OR = 1.86 (95%CI: 1.43 to 2.43), P < 0.01], prolonged aPTT [SMD = 0.24 (95%CI: -0.04 to 0.52), P = 0.99], and
increased INR [SMD = 2.21 (95%CI: 0.10 to 4.31), P = 0.04] than survivors.
Conclusions: In COVID-19 patients, abnormal simple coagulation parameters on admission, such as platelet, PT, and INR, were associated with mortality outcomes
