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Evidence found and GRADE certainty

286 questions · 318 findings · 37 reviews · Developmental, Psychosocial and Learning Problems

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No studies found 53 · 16.7%GRADE not reported 19 · 6%Very low 84 · 26.4%Low 96 · 30.2%Moderate 60 · 18.9%High 6 · 1.9%

Intermittent use of iron supplements vs placebo or no intervention

Anaemia · children under 12 years of age

Intermittent use of iron supplements probably leads to lower anaemia (haemoglobin below a cut‐off defined by trialists, taking… compared with placebo or no intervention (moderate certainty).

1 finding from 1 review

Intermittent use of iron supplements vs placebo or no intervention

Iron deficiency (using ferritin concentrations) · children under 12 years of age

It is very uncertain whether intermittent use of iron supplements changes iron deficiency (using ferritin concentrations) compared with placebo or no intervention (very low certainty).

1 finding from 1 review

Intermittent use of iron supplements vs placebo or no intervention

Iron status (ferritin concentrations in ng/mL) · children under 12 years of age

Intermittent use of iron supplements may leads to higher iron status (ferritin (μg/L) compared with placebo or no intervention (low certainty).

1 finding from 1 review