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Evidence found and GRADE certainty

1,125 questions · 1,173 findings · 91 reviews · Headline outcomes only

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No studies found 192 · 16.4%GRADE not reported 47 · 4%Very low 199 · 17%Low 325 · 27.7%Moderate 271 · 23.1%High 139 · 11.8%

Prophylactic platelet transfusion vs non prophylactic or therapeutic platelet transfusion

Bleeding: Numbers of patients with at least one significant bleeding event · People with a haematological disorder

Prophylactic platelet transfusion showed no clear difference in bleeding: Numbers of patients with at least one significant bleeding… compared with non prophylactic or therapeutic platelet transfusion (low certainty).

1 finding from 1 review

Prophylactic platelet transfusion with one dose schedule vs prophylactic platelet transfusions with another dose schedule

Bleeding: Numbers of patients with at least one significant bleeding event · People with a haematological disorder

Prophylactic platelet transfusion with one dose schedule showed no clear difference in bleeding Number of participants with a significant bleeding event ‐… compared with prophylactic platelet transfusions with another dose schedule (high certainty).

2 findings from 1 review

Prophylactic platelet transfusion with one dose schedule vs prophylactic platelet transfusions with another dose schedule

Bleeding Number of days with significant bleeding ‐ Low dosage platelet transfusions versus standard dosage platelet transfusions · People with a haematological disorder
1 finding from 1 review

Prophylactic platelet transfusion with one dose schedule vs prophylactic platelet transfusions with another dose schedule

Bleeding: Number of days with significant bleeding ‐ High dosage platelet transfusions versus standard dosage platelet transfusions · People with a haematological disorder
1 finding from 1 review

Prophylactic platelet transfusion with one dose schedule vs prophylactic platelet transfusions with another dose schedule

Mortality: secondary to bleeding · People with a haematological disorder
2 findings from 1 review

Prophylactic platelet transfusion vs platelet‐poor plasma

Bleeding: Numbers of patients with at least one significant bleeding event · People with a haematological disorder

It is very uncertain whether prophylactic platelet transfusion changes number of participants with a significant bleeding event compared with platelet‐poor plasma (very low certainty).

1 finding from 1 review

Prophylactic platelet transfusion vs platelet‐poor plasma

Mortality: secondary to bleeding · People with a haematological disorder

It is very uncertain whether prophylactic platelet transfusion changes mortality: secondary to bleeding compared with platelet‐poor plasma (very low certainty).

1 finding from 1 review

Prophylactic platelet transfusion vs non prophylactic or therapeutic platelet transfusion

Bleeding: Number of days on which a significant bleeding event occurred3 · People with a haematological disorder

Prophylactic platelet transfusion showed no clear difference in bleeding: Number of days on which a significant bleeding event… compared with non prophylactic or therapeutic platelet transfusion (low certainty).

1 finding from 1 review

Prophylactic platelet transfusion vs non prophylactic or therapeutic platelet transfusion

Mortality: secondary to bleeding · People with a haematological disorder

Prophylactic platelet transfusion showed no clear difference in mortality: Secondary to bleeding compared with non prophylactic or therapeutic platelet transfusion (low certainty).

1 finding from 1 review

Prophylactic platelet transfusion at threshold of 10,000 vs higher transfusion threshold (20,000 or 30,000)

Bleeding: Numbers of patients with at least one significant bleeding event · People with a haematological disorder

Prophylactic platelet transfusion at threshold of 10,000 showed no clear difference in bleeding: Numbers of patients with at least one significant bleeding… compared with higher transfusion threshold (20,000 or 30,000) (moderate certainty).

1 finding from 1 review

Prophylactic platelet transfusion at threshold of 10,000 vs higher transfusion threshold (20,000 or 30,000)

Mortality: secondary to bleeding · People with a haematological disorder

Prophylactic platelet transfusion at threshold of 10,000 showed no clear difference in mortality: secondary to bleeding compared with higher transfusion threshold (20,000 or 30,000) (low certainty).

1 finding from 1 review