Measles incidence Mean episodes of measles per child per year · children aged between 6 months and 5 years
Vitamin A supplementation probably leads to lower measles incidence Mean episodes of measles per child per year compared with placebo or usual care (moderate certainty).
1 finding from 1 review
Incidence of LRTI · children aged between 6 months and 5 years
Vitamin A supplementation showed no clear difference in LRTI incidence Mean episodes per child per year compared with placebo or usual care (low certainty).
1 finding from 1 review
Bitot's spots incidence · children aged between 6 months and 5 years
Vitamin A supplementation probably leads to lower bitot's spots incidence compared with placebo or usual care (moderate certainty).
1 finding from 1 review
Night blindness incidence · children aged between 6 months and 5 years
Vitamin A supplementation probably leads to lower night blindness incidence compared with placebo or usual care (moderate certainty).
1 finding from 1 review
Major cardiovascular event Physicians · middle‐aged US male physicians
Vitamin C supplementation showed no clear difference in major cardiovascular event Physicians compared with placebo (low certainty).
1 finding from 1 review
Cardiovascular mortality Physicians · middle‐aged US male physicians
It is very uncertain whether vitamin C supplementation changes cardiovascular mortality Physicians compared with placebo (very low certainty).
1 finding from 1 review
All‐cause mortality Physicians · middle‐aged US male physicians
It is very uncertain whether vitamin C supplementation changes all‐cause mortality Physicians compared with placebo (very low certainty).
1 finding from 1 review
Fatal or nonfatal myocardial infarction · middle‐aged US male physicians
Vitamin C supplementation showed no clear difference in total myocardial infarction (fatal and non‐fatal) Physicians compared with placebo (low certainty).
1 finding from 1 review
Stroke · middle‐aged US male physicians
Vitamin C supplementation showed no clear difference in total stroke (fatal and non‐fatal) Physicians compared with placebo (low certainty).
1 finding from 1 review
Self‐reported CABG/PTCA Participant self‐reports · middle‐aged US male physicians
Vitamin C supplementation showed no clear difference in self‐reported CABG/PTCA Participant self‐reports compared with placebo (low certainty).
1 finding from 1 review
Self‐reported angina Participant self‐reports · middle‐aged US male physicians
Vitamin C supplementation showed no clear difference in self‐reported angina Participant self‐reports compared with placebo (low certainty).
1 finding from 1 review
Overall improvement in CTS: SSS: short term (< 3 months) Scale from: 1 to 5 · carpal tunnel syndrome
1 finding from 1 review
Overall improvement in CTS: SSS: long term ‐ not measured · carpal tunnel syndrome
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Overall improvement in CTS: FSS: short term (< 3 months) Scale from: 1 to 5 · carpal tunnel syndrome
1 finding from 1 review
Overall improvement in CTS: FSS: long term ‐ not reported · carpal tunnel syndrome
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Adverse events · carpal tunnel syndrome
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Frequency of leg cramps after treatment: never · treating leg cramps in pregnancy
1 finding from 1 review
Any adverse effects · pregnant women
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Low birthweight · Women receiving supplements in pregnancy
Any intermittent iron regimen (with or without other vitamins and… showed no clear difference in low birthweight (less than 2500 g) compared with daily regimen (with same vitamins and minerals)‐infant outcomes (low certainty).
1 finding from 1 review
Participants with at least some Side Effects · Women receiving supplements in pregnancy
It is very uncertain whether any intermittent iron regimen (with or without other vitamins and… changes side effects (any reported throughout intervention period) compared with daily regimen (with same vitamins and minerals)‐maternal outcomes (very low certainty).
1 finding from 1 review