Findings

What do systematic reviews say?

Refine by population, intervention, comparison or outcome
More filters
Evidence found and GRADE certainty

2,805 questions · 2,912 findings · 307 reviews · Headline outcomes only

No studies found 706 · 24.2%GRADE not reported 133 · 4.6%Very low 786 · 27%Low 696 · 23.9%Moderate 474 · 16.3%High 117 · 4%

Wheat flour fortified with iron in combination with other micronutrients vs unfortified wheat flour (no micronutrients added)

Infection or inflammation at individual level (as measured by urinary neopterin, C‐reactive protein or alpha‐1‐acid glycoprotein variant A) · general population of all age groups (including pregnant women) from any country, over two years of age
1 finding from 1 review

iron‐fortified wheat flour with or without other micronutrients added vs fortified wheat flour with same micronutrients (but not iron)

Iron deficiency (as defined by study authors, based on a biomarker of iron status) · general population of all age groups (including pregnant women) from any country, over two years of age

It is very uncertain whether iron‐fortified wheat flour with or without other micronutrients added changes iron deficiency (as defined by study authors, based on a biomarker… compared with wheat flour (no added iron) with the same other micronutrients added (very low certainty).

1 finding from 1 review

Wheat flour fortified with iron in combination with other micronutrients vs unfortified wheat flour (no micronutrients added)

Iron deficiency (as defined by study authors, based on a biomarker of iron status) · general population of all age groups (including pregnant women) from any country, over two years of age

Iron‐fortified wheat flour with other micronutrients added probably leads to lower iron deficiency (as defined by study authors, based on a biomarker… compared with unfortified wheat flour (no micronutrients added) (moderate certainty).

1 finding from 1 review

Ketamine vs placebo

Efficacy: number of participants who respond to treatment ‐ at 24 hours · adults (aged 18 years+) with depression in bipolar disorder

Ketamine may leads to higher efficacy: number of participants who respond to treatment ‐ at 24… compared with placebo (low certainty).

1 finding from 1 review

Memantine vs placebo

Efficacy: number of participants who respond to treatment ‐ at 3 months · adults (aged 18 years+) with depression in bipolar disorder

It is very uncertain whether memantine changes efficacy: number of participants who respond to treatment ‐ at 1 week compared with placebo (very low certainty).

4 findings from 1 review
Show 1 more finding

Cytidine vs placebo

Efficacy: number of participants who respond to treatment ‐ at 3 months · adults (aged 18 years+) with depression in bipolar disorder

It is very uncertain whether cytidine changes efficacy: number of participants who respond to treatment ‐ at 3… compared with placebo (very low certainty).

1 finding from 1 review