Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,805 questions · 2,912 findings · 307 reviews · Headline outcomes only

No studies found 706 · 24.2%GRADE not reported 133 · 4.6%Very low 786 · 27%Low 696 · 23.9%Moderate 474 · 16.3%High 117 · 4%

Intervention not reported

Holding a driving licence Measured at the end of study · teenagers, aged 17–19 years

It is very uncertain whether the intervention changes holding a driving licence Measured at the end of study (very low certainty).

1 finding from 1 review