Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

328 questions · 328 findings · 119 reviews · Headline outcomes only

No studies found 122 · 37.2%GRADE not reported 21 · 6.4%Very low 67 · 20.4%Low 54 · 16.5%Moderate 57 · 17.4%High 7 · 2.1%

Targeted mass media intervention vs targeted mass media intervention plus personalised content

Adverse effects · adult, ethnic minority groups: Latino immigrants, elderly Chinese immigrants, self‐described Americans of African heritage

The review found no eligible studies for this question.

1 finding from 1 review