Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

781 questions · 829 findings · 43 reviews · Headline outcomes only

No studies found 215 · 25.9%GRADE not reported 39 · 4.7%Very low 205 · 24.7%Low 208 · 25.1%Moderate 130 · 15.7%High 32 · 3.9%

Metformin vs placebo

Fasting blood glucose (mg/dL) · Adults with mental disorders in low‐ and middle‐income countries
2 findings from 1 review

Nutrition education intervention for pregnant women vs no intervention or standard care to reduce stunting (height‐for‐age, length at 18 months)

Low birth weight (g) · pregnant women

Nutrition education intervention for pregnant women may leads to higher low birth weight (g) compared with standard care or no intervention, to reduce stunting (low certainty).

1 finding from 1 review

Zinc supplementation in pregnant women vs supplementation without zinc or placebo to reduce stunting

Low birth weight (g) · pregnant women

Zinc supplementation in pregnant women showed no clear difference in low birth weight (g) compared with supplementation without zinc or placebo to reduce stunting (moderate certainty).

1 finding from 1 review

Intervention not reported

Became severely acutely malnourished Incidence of first event per 1000 child months ( · children and adults in low‐ and middle‐income countries

It is very uncertain whether the intervention changes became severely acutely malnourished Incidence of first event per… (very low certainty).

1 finding from 1 review