Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

40 questions · 40 findings · 17 reviews

No studies found 10 · 25%GRADE not reported 2 · 5%Very low 7 · 17.5%Low 11 · 27.5%Moderate 9 · 22.5%High 1 · 2.5%

Summary of findings table ‐ Convalescent plasma vs placebo or usual care

Serious adverse events ‐ total · individuals with moderate to severe disease

Summary of findings table ‐ Convalescent plasma showed no clear difference in serious adverse events ‐ total compared with placebo or standard care alone (moderate certainty).

1 finding from 1 review

RBD‐specific polyclonal F(ab') 2 fragments of equine antibodies (EpAbs) vs saline placebo

Serious adverse events (by day 28) · individuals with moderate or severe COVID‐19

RBD‐specific polyclonal F(ab') 2 fragments of equine antibodies… showed no clear difference in serious adverse events (by day 28) compared with saline placebo (low certainty).

1 finding from 1 review

Music therapy vs placebo or usual care

Adverse events Any serious or non‐serious adverse event · Individuals with autism spectrum disorder

Music therapy showed no clear difference in adverse events Any serious or non‐serious adverse event compared with placebo therapy or standard care (moderate 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

Serious adverse events as a result of sickle cell‐related complications · 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 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 no transfusion

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 not had previous long‐term red cell transfusions

Long‐term red cell transfusion may leads to lower serious adverse events as a result of sickle cell‐related… compared with no transfusion (low certainty).

1 finding from 1 review

Hyperimmune immunoglobulin from human plasma vs saline placebo

Serious adverse events up to day 28 (data available only as a composite of serious adverse events or death up to day 28) · individuals with moderate or severe COVID‐19

Hyperimmune immunoglobulin from human plasma showed no clear difference in serious adverse events up to day 28 (data available only as a… compared with saline placebo (low certainty).

1 finding from 1 review