“…These three markers have all been reported to be associated with the severity of COVID-19. [39][40][41][42][43][44] In our study, apart from CAR, we did not find a correlation between sTREM-1 and the severity of the disease. Therefore, the combination of CAR, HGB, and D-dimer yielded a strong predictive value for 28-day mortality in COVID-19 cases, with an AUC of 0.919 (95% CI: 0.857-0.981).…”