Table 1.

Definitions of transfusion reactions

Study‐Year	Febrile reactions	Urticarial	Non‐haemolytic transfusion reactions
Kennedy 2008	Temperature greater than 100.5°F or an increase of 1°F of an already existing fever.	It was classified as " hives with or without itching".	‐‐‐‐
Wang 1992	Elevation of body temperature of 1ºC or more during a blood transfusion or within two hours of its completion.	‐‐‐‐	‐‐‐‐
Wang 2002	New temperature >38°C, or an increase in temperature >1°C above baseline.	‐‐‐‐	Fever (new temperature >38°C, or an increase in temperature >1°C above baseline), subjective chills with or without rigors, urticaria or rash, in the absence of haemolysis.