Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

601 questions · 628 findings · 58 reviews

No studies found 131 · 20.9%GRADE not reported 92 · 14.6%Very low 167 · 26.6%Low 143 · 22.8%Moderate 76 · 12.1%High 19 · 3%

Summary of findings table ‐ Collagen vs standard diet or placebo

Adverse effects/events: at least 1 adverse effect ‐ as defined by individual studies. · adults with pressure ulcers

It is very uncertain whether summary of findings table ‐ Collagen changes side effects: at least one adverse event compared with standard diet or placebo (very low certainty).

1 finding from 1 review

Summary of findings table ‐ Energy, protein and micronutrients vs standard diet

Health‐related quality of life ‐ not reported · inpatients who are mildly or seriously malnourished or at risk of being malnourished, elderly patients at risk of developing pressure ulcers

The review found no eligible studies for this question.

1 finding from 1 review

Balanced protein and energy supplementation vs no intervention or control intervention (control)

Small‐for‐gestational age · pregnant women

Balanced protein and energy supplementation probably leads to lower small‐for‐gestational age compared with control or no intervention (moderate certainty).

1 finding from 1 review