Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,149 questions · 1,211 findings · 179 reviews

No studies found 175 · 14.5%GRADE not reported 86 · 7.1%Very low 286 · 23.6%Low 341 · 28.2%Moderate 254 · 21%High 69 · 5.7%

Multi‐component intervention vs exercise

Number of people who experience a fall that required hospital admission · Older people living in the community

It is very uncertain whether multiple component interventions changes number of people who experience a fall that require hospital admission compared with exercise (very low certainty).

1 finding from 1 review

Repeated single embryo transfer (mixed policies) vs multiple embryo transfer

Multiple pregnancy · transfer following in vitro fertilisation or intracytoplasmic sperm injection

Repeated single embryo transfer (mixed policies) probably leads to lower multiple pregnancy compared with multiple embryo transfer (moderate certainty).

1 finding from 1 review

Embryo culture with low oxygen concentration vs embryo culture with atmospheric oxygen concentration

Multiple pregnancy rate · Patients with multiple pregnancy rate

Embryo culture with low oxygen concentration showed no clear difference in multiple‐pregnancy rate compared with embryo culture with atmospheric oxygen concentration (low certainty).

1 finding from 1 review

Home (point‐of‐use) fortification of foods with multiple micronutrient powders vs placebo or no intervention

Anaemia · children aged 6 to 23 months

Home (point‐of‐use) fortification of foods with multiple… probably leads to lower anaemia (haemoglobin values lower than 110 g/L) compared with no intervention or placebo (moderate certainty).

1 finding from 1 review

Home (point‐of‐use) fortification of foods with multiple micronutrient powders vs placebo or no intervention

Iron deficiency (as defined by trialists) · children aged 6 to 23 months

Home (point‐of‐use) fortification of foods with multiple… leads to lower iron deficiency (as defined by trialists) compared with no intervention or placebo (high certainty).

1 finding from 1 review

Home (point‐of‐use) fortification of foods with multiple micronutrient powders vs an iron‐only supplement

Anaemia · children aged 6 to 23 months

Home (point‐of‐use) fortification of foods with multiple… showed no clear difference in anaemia (haemoglobin values lower than 110 g/L) compared with an iron‐only supplement (low certainty).

1 finding from 1 review