Adverse events · children up to the age of 7 at risk of upper respiratory tract infection
1 finding from 1 review
Severity of subjective symptoms (mean duration of acute URTI) · children up to the age of 7 at risk of upper respiratory tract infection
1 finding from 1 review
Time to occurrence of acute URTI ‐ not reported · children up to the age of 7 at risk of upper respiratory tract infection
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Number of cases with complications ‐ not reported · children up to the age of 7 at risk of upper respiratory tract infection
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Rate of hospitalisation ‐ not reported · children up to the age of 7 at risk of upper respiratory tract infection
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Maternal death · women in the postpartum period
Vitamin A supplementation (200,000 to 400,000 IU) showed no clear difference in maternal mortality compared with placebo or no treatment (moderate certainty).
1 finding from 1 review
Maternal morbidity (diarrhoea, respiratory infections, fever) · women in the postpartum period
1 finding from 1 review
Adverse effects on women: abdominal cramps · women in the postpartum period
Vitamin A supplementation (200,000 to 400,000 IU) showed no clear difference in maternal adverse effects after administration: abdominal pain compared with placebo or no treatment (low certainty).
1 finding from 1 review
Maternal breast milk retinol concentration · women in the postpartum period
1 finding from 1 review
Change in Infant Mortality Rate per 1000 live births1 · women in the postpartum period
Vitamin A supplementation (200,000 to 400,000 IU) showed no clear difference in infant mortality compared with placebo or no treatment (low certainty).
1 finding from 1 review
Infant morbidity (gastroenteritis) · women in the postpartum period
It is very uncertain whether vitamin A supplementation (200,000 to 400,000 IU) changes infant morbidity (gastroenteritis) compared with placebo or no treatment (very low certainty).
1 finding from 1 review
Infant adverse effects: bulging fontanelle · women in the postpartum period
Vitamin A supplementation (200,000 to 400,000 IU) showed no clear difference in infant adverse effects: bulging fontanelle compared with placebo or no treatment (low certainty).
1 finding from 1 review
Change in ADAS‐Cog · people with Alzheimer's disease
1 finding from 1 review
Number of participants experiencing any serious adverse events · people with Alzheimer's disease
Vitamin E (capsules 2000 IU/day in two divided doses) showed no clear difference in adverse events Number of participants reporting ≥ 1 serious adverse… compared with placebo (moderate certainty).
1 finding from 1 review
Deaths Number of deaths · people with Alzheimer's disease
Vitamin E (capsules 2000 IU/day in two divided doses) showed no clear difference in deaths Number of deaths compared with placebo (moderate certainty).
1 finding from 1 review
Activities of daily living · people with Alzheimer's disease
1 finding from 1 review
Progression to Alzheimer's disease Number of people progressing to AD · MCI
Vitamin E (capsules 2000 IU/day in two divided doses) showed no clear difference in progression to Alzheimer's disease Number of people progressing to AD compared with placebo (moderate certainty).
1 finding from 1 review
Change in ADAS‐Cog · MCI
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Number of participants experiencing any serious adverse events · MCI
1 finding from 1 review
Death Number of deaths over 36 months · MCI
Vitamin E (capsules 2000 IU/day in two divided doses) showed no clear difference in death Number of deaths over 36 months compared with placebo (moderate certainty).
1 finding from 1 review