Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

137 questions · 137 findings · 8 reviews · Cystic Fibrosis and Genetic Disorders

No studies found 46 · 33.6%GRADE not reported 3 · 2.2%Very low 21 · 15.3%Low 40 · 29.2%Moderate 21 · 15.3%High 6 · 4.4%

Long‐term red cell transfusion vs usual care

SCD ‐ related SAEs ‐ ACS · SCD‐related SAEs and clinical stroke in people with SCD at risk of stroke and no previous long‐term RBC transfusions

Long‐term RBC transfusions may leads to lower SCD ‐ related SAEs ‐ ACS compared with standard care (low certainty).

1 finding from 1 review

Long‐term red cell transfusion vs usual care

SCD‐related SAEs ‐ pain crisis · SCD‐related SAEs and clinical stroke in people with SCD at risk of stroke and no previous long‐term RBC transfusions

Long‐term RBC transfusions may leads to lower SCD‐related SAEs ‐ pain crisis compared with standard care (low certainty).

1 finding from 1 review

Long‐term red cell transfusion vs usual care

Stroke · SCD‐related SAEs and clinical stroke in people with SCD at risk of stroke and no previous long‐term RBC transfusions

Long‐term RBC transfusions probably leads to lower clinical stroke compared with standard care (moderate certainty).

1 finding from 1 review

Long‐term red cell transfusion vs no transfusion

Stroke · individuals with sickle cell disease who are at risk of a primary stroke who have not had previous long‐term red cell transfusions

Long‐term red cell transfusion probably leads to lower clinical stroke compared with no transfusion (moderate certainty).

1 finding from 1 review

Long‐term red cell transfusion vs no transfusion

Measures of neurological impairment ‐ not reported · individuals with sickle cell disease who are at risk of a primary stroke who have had long‐term red cell transfusions to prevent a stroke

The review found no eligible studies for this question.

1 finding from 1 review

Long‐term red cell transfusion vs hydroxyurea and phlebotomy

Incidence of TIA · individuals with sickle cell disease who are at risk of a primary stroke who have had long‐term red cell transfusions to prevent a stroke

It is very uncertain whether long‐term red cell transfusion changes incidence of TIA compared with hydroxyurea and phlebotomy (very low certainty).

1 finding from 1 review

Long‐term red cell transfusion vs hydroxyurea and phlebotomy

Serious adverse events as a result of sickle cell‐related complications · individuals with sickle cell disease who are at risk of a primary stroke who have had long‐term red cell transfusions to prevent a stroke

It is very uncertain whether long‐term red cell transfusion changes serious adverse events as a result of sickle cell‐related… compared with hydroxyurea and phlebotomy (very low certainty).

1 finding from 1 review

Long‐term red cell transfusion vs hydroxyurea and phlebotomy

Measures of neurological impairment ‐ not reported · individuals with sickle cell disease who are at risk of a primary stroke who have had long‐term red cell transfusions to prevent a stroke

The review found no eligible studies for this question.

1 finding from 1 review

Long‐term red cell transfusion vs hydroxyurea and phlebotomy

Quality of life ‐ not reported · individuals with sickle cell disease who are at risk of a primary stroke who have had long‐term red cell transfusions to prevent a stroke

The review found no eligible studies for this question.

1 finding from 1 review

Long‐term red cell transfusion vs hydroxyurea and phlebotomy

Stroke · individuals with sickle cell disease who have had a stroke who have had long‐term red cell transfusions to prevent another stroke

It is very uncertain whether long‐term red cell transfusion changes clinical stroke compared with hydroxyurea and phlebotomy (very low certainty).

1 finding from 1 review

Long‐term red cell transfusion vs hydroxyurea and phlebotomy

All‐cause mortality · individuals with sickle cell disease who have had a stroke who have had long‐term red cell transfusions to prevent another stroke

It is very uncertain whether long‐term red cell transfusion changes all‐cause mortality compared with hydroxyurea and phlebotomy (very low certainty).

1 finding from 1 review