Cochrane · systematic review · CD010697
Fortification of staple foods with zinc for improving zinc status and other health outcomes in the general population
Shah, D, Sachdev, HS, Gera, T, et al. · Cochrane Database of Systematic Reviews · 2016 · Cochrane Library
Public HealthAMSTAR 2: not assessed
SoF tableOnly the outcomes this review put in its Summary of Findings table are listed (the Cochrane Handbook caps them at about seven per comparison). Its other analyses are not shown here.
Questions
5
current version
GRADE rated
5
No studies
0
Included studies
NR
No studies 0 · 0%Ungraded 0 · 0%Very low 1 · 20%Low 4 · 80%Moderate 0 · 0%High 0 · 0%
Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.
Questions and results
Foods fortified with zinc alone compared to same foods without adding zinc for improving zinc status and other health outcomes in the general population
Population: General population (over 2 years of age, including pregnant and lactating women)
| Outcome | Effect | Evidence | Status / GRADE |
|---|---|---|---|
Serum or plasma zinc (in µmol/L) Foods fortified with zinc alone vs same foods without adding zinc | no estimate extracted | 3 studies · 158 participants | Low Downgraded: risk of bias, imprecision |
Stunting (author defined) Foods fortified with zinc alone vs same foods without adding zinc | RR 0.88 [0.36, 2.13] | 2 studies · 397 participants | Low Downgraded: risk of bias, imprecision |
Underweight (author defined) Foods fortified with zinc alone vs same foods without adding zinc | RR 3.1 [0.52, 18.38] | 2 studies · 397 participants | Low Downgraded: risk of bias, imprecision |
Foods fortified with zinc plus other micronutrients compared to foods fortified with other micronutrients without zinc for improving zinc status and other health outcomes in the general population
Population: General population (over 2 years of age, including pregnant and lactating women)
| Outcome | Effect | Evidence | Status / GRADE |
|---|---|---|---|
Zinc deficiency (as defined by authors, depending on age and gender) Foods fortified with zinc plus other micronutrients vs foods fortified with other micronutrients without zinc | RR 0.17 [0.01, 3.94] | 1 study · 30 participants | Very low Downgraded: risk of bias, imprecision, indirectness |
Serum or plasma zinc (in µmol/L) Foods fortified with zinc plus other micronutrients vs foods fortified with other micronutrients without zinc | no estimate extracted | 4 studies · 250 participants | Low Downgraded: risk of bias, imprecision |