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. Author manuscript; available in PMC: 2017 Jul 27.
Published in final edited form as: Cochrane Database Syst Rev. 2017 Jan 27;1:CD011305. doi: 10.1002/14651858.CD011305.pub2
Restrictive compared with liberal for people with haematological malignancies treated with intensive chemotherapy or radiotherapy, or both, with or without haematopoietic stem cell support
Patient or population: people w ith haematological malignancies treated w ith intensive chemotherapy or radiotherapy, or both, w ith or w ithout haematopoietic stem cell support
Setting: Department of haematology
Intervention: Restrictive
Comparison: Liberal red blood cell transfusion NRS
Outcomes Anticipated absolute effects* (95% CI) Relative effect (95% CI) No of Participants (studies) Quality of the evidence (GRADE) Comments
Risk with liberal red blood cell transfusion RCTs Risk with Restrictive
All-cause mortality at 31 to 100 days Liberal: 1 death (46 participants)
Restrictive: 1 death (38 participants)
84 (1 study) ⊕◯◯◯ VERY LOW1 Mean 31 days follow -up
Quality of life - not reported - - - -
Number of participants with any bleeding - not reported - - - -
Number of participants with clinically significant bleeding Liberal: 8 (46 participants)
Restrictive: 3 (38 participants)
84 (1 study) ⊕◯◯◯ VERY LOW1 The study authors reported that there was no significant difference between the two groups
Serious infections - not reported - - - -
Length of hospital admission - not reported - - - -
Hospital readmission rate - not reported - - - -
* The risk in the intervention group (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI).

CI: Confidence interval; RR: Risk ratio; OR: Odds ratio;
GRADE Working Group grades of evidence
High quality: We are very confident that the true effect lies close to that of the estimate of the effect
Moderate quality: We are moderately confident in the effect estimate: The true effect is likely to be close to the estimate of the effect, but there is a possibility that it is substantially different
Low quality: Our confidence in the effect estimate is limited: The true effect may be substantially different from the estimate of the effect
Very low quality: We have very little confidence in the effect estimate: The true effect is likely to be substantially different from the estimate of effect
1

The level of evidence w as dow ngraded by 1 due to imprecision.