Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

333 questions · 350 findings · 60 reviews

No studies found 120 · 34.3%GRADE not reported 17 · 4.9%Very low 97 · 27.7%Low 81 · 23.1%Moderate 25 · 7.1%High 10 · 2.9%

Massage vs no massage

Anxiety · cancer patients
4 findings from 1 review
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Targeted mass media intervention vs general population mass media intervention

Attempts to quit smoking · mass media intervention for promoting healthy behaviours

It is very uncertain whether targeted mass media intervention changes quit‐attempts, 3 months compared with general population mass media intervention (very low certainty).

1 finding from 1 review