Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

40 questions · 40 findings · 4 reviews · Headline outcomes only

No studies found 14 · 35%GRADE not reported 0 · 0%Very low 12 · 30%Low 11 · 27.5%Moderate 2 · 5%High 1 · 2.5%

Parent‐ and clinician‐mediated intervention vs clinician‐mediated intervention alone

Expressive language (number of words; standard scores; MLUw; NDW; IPSyn; frequency of unique targets; % target talk) · children with Down syndrome aged between birth and six years
1 finding from 1 review