Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,703 questions · 15,007 findings · 1,416 reviews

No studies found 2,881 · 19.2%GRADE not reported 1,551 · 10.3%Very low 3,111 · 20.7%Low 3,881 · 25.9%Moderate 2,669 · 17.8%High 914 · 6.1%

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Two or more foetal haemoglobin inducers at any dose or duration vs a usual management protocol, placebo or a single foetal haemoglobin inducer

Measures of HbF · people with non‐transfusion‐dependent β‐thalassaemia

The review found no eligible studies for this question.

1 finding from 1 review

Single foetal haemoglobin inducer at any dose or duration vs placebo or usual care

Adverse events · people with non‐transfusion‐dependent β‐thalassaemia

It is very uncertain whether single foetal haemoglobin inducer at any dose or duration changes adverse events compared with usual care or placebo (very low certainty).

1 finding from 1 review

Methylxanthine vs placebo or control

Death or major neurodevelopmental disability at 18 to 24 months · preterm infants at risk of or with apnea; preterm infants undergoing extubation

Methylxanthine probably leads to lower death or major neurodevelopmental disability at 18 to 24 months compared with placebo or control (moderate certainty).

1 finding from 1 review