Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

385 questions · 395 findings · 26 reviews · Public Health

No studies found 82 · 20.8%GRADE not reported 24 · 6.1%Very low 78 · 19.7%Low 111 · 28.1%Moderate 78 · 19.7%High 22 · 5.6%

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

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

Any outcome considered an adverse effect · 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

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