Zhao 2004.

Methods	Study design: RCT Allocation: Randomized Endpoint classification: Efficacy study Intervention model: Parallel assignment Masking: Unknown Primary purpose: Prevention
Participants	One hundred patients with cirrhosis of liver, gastric ulcer and cancer were selected to receive RBC concentrates with leukocyte filtration. Another group of 50 patients with liver necrosis, gastric ulcer and cancer were selected to receive non‐filtered RBC concentrates. Two hundred and forty patients with acute or chronic leukaemia, aplastic anaemia, multiple myeloma, thrombocytopenia purpura, diabetes mellitus, cirrhosis of liver, upper gastrointestinal haemorrhage, severe hepatitis, burn and cancer post radioactive or chemical treatment were divided into 2 groups with 120 patients in each one and selected randomly to receive platelet concentrates.
Interventions	RBC concentrates with leukocyte filtration versus non‐filtered RBC concentrates.
Outcomes	incidence rates of febrile nonhaemolytic transfusion reactions (FNHTR).
Notes	Registration number: Unknown. Inclusion or exclusion decision cannot be made because sufficient information is not currently available.