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Table 1. Scoring systems used to analyse associations of coagulation abnormalities and mortality

From: COVID-19-associated coagulopathy: thromboembolism prophylaxis and poor prognosis in ICU

A. ISTH SIC scoring system   
Item Score Range
Platelet count (×109/L) 1 100-150
  2 <100
PT-INR 1 1.2-1.4
  2 >1.4
SOFA score 1 1
  2 ≥2
B. Chinese DIC scoring system  
Item Score
Primary disease leading to DIC 2
Clinical manifestations
 Severe bleeding 1
 Shock 1
 Extensive cutaneous and mucosal embolism, or focal ischemic necrosis, or unexplained organ failure 1
Platelet count (×109/L)
 Non-hematology malignancy
  ≥100 0
  80–< 100 1
  <80 2
  Decrease > 50% within 24h 1
 Hematology malignancy
  < 50 1
  Decrease > 50% within 24h 1
D-dimer (mg/L)
 < 5 0
 5–< 9 2
 ≥9 3
PT and aPTT (sec)
 Prolongation of PT< 3 or aPTT< 10 0
 Prolongation of PT≥3 or aPTT≥10 1
 Prolongation of PT≥6 2
Fbg (g/L)
 ≥1.0 0
  < 1.0 1
  1. ISTH International Society on Thrombosis and Haemostasis, SIC sepsis-induced coagulopathy, PT-INR prothrombin time–international normalised ratio, SOFA Sequential Organ Failure Assessment (SOFA score is the sum of four items: respiratory SOFA, cardiovascular SOFA, hepatic SOFA, and renal SOFA). DIC disseminated intravascular coagulation, PT prothrombin time, aPTT activated partial thromboplastin time, Fbg fibrinogen