Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,100 questions · 1,164 findings · 107 reviews

No studies found 280 · 24.1%GRADE not reported 159 · 13.7%Very low 292 · 25.1%Low 274 · 23.5%Moderate 113 · 9.7%High 46 · 4%

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

Dietary fibre (all study interventions) vs control

Number of participantswith at least one adenoma 1 cm or greater · people with a history of colorectal adenomas

Dietary fibre (all study interventions) showed no clear difference in number of participantswith at least one adenoma 1 cm or greater compared with control (low certainty).

1 finding from 1 review

Adverse event outcomes for dietary combined with physical activity interventions vs standard‐of‐care therapy

GDM · pregnant women, excluding women already diagnosed with GDM in this pregnancy and those with pre‐existing diabetes mellitus

Combined diet and exercise interventions showed no clear difference in GDM compared with standard care (mother) (moderate certainty).

1 finding from 1 review

Adverse event outcomes for dietary combined with physical activity interventions vs standard‐of‐care therapy

Large‐for‐gestational age · pregnant women, excluding women already diagnosed with GDM in this pregnancy and those with pre‐existing diabetes mellitus

Combined diet and exercise interventions showed no clear difference in large‐for‐gestational age compared with standard care (child) (low certainty).

1 finding from 1 review