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. Author manuscript; available in PMC: 2016 Jan 19.
Published in final edited form as: Cochrane Database Syst Rev. 2015 Nov 18;11:CD010983. doi: 10.1002/14651858.CD010983.pub2

Table 2. Assessment and grading of bleeding.

Study Bleeding primary outcome of study Method of bleeding assessment reported Bleeding severity scale used RBC usage part of bleeding severity assessment RBC transfusion policy
Rebulla 1997 Yes Yes New scale developed by Rebulla Yes Haemoglobin < 80 g/L
Heckman 1997 Not reported Yes Ajani 1990 Yes Not reported
Diedrich 2005 No Yes WHO 1979 No Haemoglobin < 80 g/L

RBC = red blood cell