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Table 2 Academic Bleeding Consensus standards for the collection and reporting of bleeding complications [56]

From: Clinical review: Bleeding - a notable complication of treatment in patients with acute coronary syndromes: incidence, predictors, classification, impact on prognosis, and management

Assigned color Recommended data collection
Red (essential for all studies) Clinical bleeding events
  Date/time of diagnosis
  Location - gastrointestinal, genitourinary, intracranial, vascular access site, other
  Related to a procedure, yes/no
  Laboratory parameters (dates and times of values should be recorded)
  Most recent hemoglobin value before bleed is recognized
  Lowest hemoglobin value within 24 hours after onset of bleeding has been recognized
  Change in hemoglobin associated with clinical bleeding event
  Consequences of bleeding
  Death related to bleeding (yes/no)
  Blood transfusion--type, number of units, associated with overt bleeding (yes/no), hemoglobin value at the time of transfusion, dates and times of administration
  Resulted in permanent disability (yes/no)
Orange (recommended for all studies) Bleeding resulted in discontinuation of therapy (yes/no)
  Bleeding prompted dose alteration of therapy (yes/no)
Green (optional for all studies) Bleeding resulted in hemodynamic compromise (yes/no)
  Bleeding resulted in transient disability (yes/no)
  Bleeding resulted in increased length of stay (yes/no)
  Number of hospital days added
  Number of intensive care unit days added
  Hemoglobin decrease associated with procedures