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What do systematic reviews say?

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Evidence found and GRADE certainty

3,747 questions · 3,943 findings · 594 reviews

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No studies found 784 · 19.9%GRADE not reported 530 · 13.4%Very low 1,040 · 26.4%Low 981 · 24.9%Moderate 444 · 11.3%High 164 · 4.2%

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

Intake meeting target from dietary guidelines, 3 months from baseline · adult, ethnic minority groups: Latino immigrants, elderly Chinese immigrants, self‐described Americans of African heritage

It is very uncertain whether targeted mass media intervention changes intake meeting target from dietary guidelines, 3 months from baseline compared with targeted mass media intervention plus personalised content (very low certainty).

1 finding from 1 review

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

Changes in dietary composition, 12 months from baseline · adult, ethnic minority groups: Latino immigrants, elderly Chinese immigrants, self‐described Americans of African heritage
1 finding from 1 review

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

Weekly physical activity meeting target from guidelines, 3 months from baseline · adult, ethnic minority groups: Latino immigrants, elderly Chinese immigrants, self‐described Americans of African heritage

It is very uncertain whether targeted mass media intervention changes weekly physical activity meeting target from guidelines, 3 months… compared with targeted mass media intervention plus personalised content (very low certainty).

1 finding from 1 review

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

Knowledge of nutrition and physical activity guidelines · adult, ethnic minority groups: Latino immigrants, elderly Chinese immigrants, self‐described Americans of African heritage

It is very uncertain whether targeted mass media intervention changes knowledge of nutrition and physical activity guidelines compared with targeted mass media intervention plus personalised content (very low certainty).

1 finding from 1 review

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

Active NRT vs placebo ‐ rs16969968 ‐ non‐Hispanic black or African American

6‐Month abstinence ‐ homozygous major · people who smoke

Active NRT leads to higher abstinence at 6 months ‐ homozygous major compared with placebo ‐ rs16969968 ‐ non‐Hispanic black or African American (high certainty).

1 finding from 1 review

Active NRT vs placebo ‐ rs16969968 ‐ non‐Hispanic black or African American

6‐Month abstinence ‐ heterozygous or homozygous minor · people who smoke

Active NRT showed no clear difference in abstinence at 6 months ‐ heterozygous or homozygous minor compared with placebo ‐ rs16969968 ‐ non‐Hispanic black or African American (low certainty).

1 finding from 1 review

Active NRT vs placebo ‐ rs16969968 ‐ non‐Hispanic black or African American

Abstinence · people who smoke

Active NRT showed no clear difference in abstinence at end of treatment compared with placebo ‐ rs16969968 ‐ non‐Hispanic black or African American (moderate certainty).

2 findings from 1 review

Active NRT vs placebo ‐ rs16969968 ‐ non‐Hispanic black or African American

Abstinence at end of treatment ‐ homozygous major · people who smoke

Active NRT leads to higher abstinence at end of treatment ‐ homozygous major compared with placebo ‐ rs16969968 ‐ non‐Hispanic black or African American (high certainty).

1 finding from 1 review

Active NRT vs placebo ‐ rs16969968 ‐ non‐Hispanic black or African American

Abstinence at end of treatment ‐ heterozygous or homozygous minor · people who smoke

Active NRT probably leads to lower abstinence at end of treatment ‐ heterozygous or homozygous minor compared with placebo ‐ rs16969968 ‐ non‐Hispanic black or African American (moderate certainty).

1 finding from 1 review

Active NRT vs placebo ‐ rs2036527 ‐ non‐Hispanic black or African American

6‐Month abstinence ‐ homozygous major · people who smoke

It is very uncertain whether active NRT changes 6‐Month abstinence ‐ homozygous major compared with placebo ‐ rs2036527 ‐ non‐Hispanic black or African American (very low certainty).

1 finding from 1 review

Active NRT vs placebo ‐ rs2036527 ‐ non‐Hispanic black or African American

6‐Month abstinence ‐ heterozygous or homozygous minor · people who smoke

Active NRT showed no clear difference in 6‐Month abstinence ‐ heterozygous or homozygous minor compared with placebo ‐ rs2036527 ‐ non‐Hispanic black or African American (moderate certainty).

1 finding from 1 review