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What do systematic reviews say?

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Evidence found and GRADE certainty

309 questions · 330 findings · 31 reviews

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No studies found 59 · 17.9%GRADE not reported 63 · 19.1%Very low 93 · 28.2%Low 77 · 23.3%Moderate 27 · 8.2%High 11 · 3.3%

Supportive interventions for enhancing dietary intake vs comparators

All‐cause mortality · malnourished or nutritionally at‐risk adults

Supportive interventions for enhancing dietary intake probably leads to lower all‐cause mortality compared with comparators (moderate certainty).

1 finding from 1 review

Adverse event outcomes for dietary combined with physical activity interventions vs control

Body‐mass index (BMI) · children aged 12 to 18 years
3 findings from 1 review

Dietary fibre (all study interventions) vs control

Number of participantswith at least one recurrent adenoma · people with a history of colorectal adenomas

Dietary fibre (all study interventions) showed no clear difference in number of participantswith at least one recurrent adenoma compared with control (low certainty).

1 finding from 1 review