Findings

What do systematic reviews say?

7 questions · 7 findings · 1 reviews

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No studies found 1 · 14.3%GRADE not reported 0 · 0%Very low 0 · 0%Low 5 · 71.4%Moderate 1 · 14.3%High 0 · 0%

Fortification of salt with iron and iodine vs fortification of salt with iodine

Urinary iodine concentration (non‐RCT) · participants were of any age or sex and from any country, regardless of baseline iron and iodine status

1 finding from 1 review

Fortification of salt with iron and iodine versus fortification of salt with iodine alone for improving iron and… 2022 · Cochrane Headline outcomes only
no estimate extracted
7 studies · 1594 participants
Low

Fortification of salt with iron and iodine vs fortification of salt with iodine

Blood pressure · participants were of any age or sex and from any country, regardless of baseline iron and iodine status

The review found no eligible studies for this question.

1 finding from 1 review

Fortification of salt with iron and iodine versus fortification of salt with iodine alone for improving iron and… 2022 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Fortification of salt with iron and iodine vs fortification of salt with iodine

Prevalence of iron deficiency anaemia · participants were of any age or sex and from any country, regardless of baseline iron and iodine status

Fortification of salt with iron and iodine may leads to lower prevalence of iron deficiency anaemia compared with fortification of salt with iodine (low certainty).

1 finding from 1 review

Fortification of salt with iron and iodine versus fortification of salt with iodine alone for improving iron and… 2022 · Cochrane Headline outcomes only
RR 0.35 [0.24, 0.52]
5 studies · 1209 participants
Low

Fortification of salt with iron and iodine vs fortification of salt with iodine

Haemoglobin (g/dL) · participants were of any age or sex and from any country, regardless of baseline iron and iodine status

1 finding from 1 review

Fortification of salt with iron and iodine versus fortification of salt with iodine alone for improving iron and… 2022 · Cochrane Headline outcomes only
no estimate extracted
13 studies · 4597 participants
Low

Fortification of salt with iron and iodine vs fortification of salt with iodine

Ferritin (µg/L) · participants were of any age or sex and from any country, regardless of baseline iron and iodine status

1 finding from 1 review

Fortification of salt with iron and iodine versus fortification of salt with iodine alone for improving iron and… 2022 · Cochrane Headline outcomes only
no estimate extracted
5 studies · 1419 participants
Low

Fortification of salt with iron and iodine vs fortification of salt with iodine

Transferrin receptor concentration (mg/L) · participants were of any age or sex and from any country, regardless of baseline iron and iodine status

1 finding from 1 review

Fortification of salt with iron and iodine versus fortification of salt with iodine alone for improving iron and… 2022 · Cochrane Headline outcomes only
no estimate extracted
5 studies · 1256 participants
Low

Fortification of salt with iron and iodine vs fortification of salt with iodine

Anaemia prevalence · participants were of any age or sex and from any country, regardless of baseline iron and iodine status

Fortification of salt with iron and iodine probably leads to lower prevalence of anaemia compared with fortification of salt with iodine (moderate certainty).

1 finding from 1 review

Fortification of salt with iron and iodine versus fortification of salt with iodine alone for improving iron and… 2022 · Cochrane Headline outcomes only
RR 0.79 [0.66, 0.94]
8 studies · 2593 participants
Moderate