Acceptability: total withdrawals · premenopausal women (age 18–32.7 years)
Vitamin D showed no clear difference in withdrawals from the study for any reason compared with placebo (moderate certainty).
1 finding from 1 review
Serious adverse events · premenopausal women (age 18–32.7 years)
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Total hip BMD · premenopausal women (age 18–32.7 years)
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Lumbar spine bone mineral density (BMD) · premenopausal women (age 18–32.7 years)
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
All‐cause mortality · people with chronic liver diseases
It is very uncertain whether vitamin D changes all‐cause mortality compared with placebo or no intervention (very low certainty).
1 finding from 1 review
Liver‐related mortality · people with chronic liver diseases
It is very uncertain whether vitamin D changes liver‐related mortality compared with placebo or no intervention (very low certainty).
1 finding from 1 review
Serious adverse events · people with chronic liver diseases
1 finding from 1 review
no estimate extracted
Studies not reported
Very low
Liver morbidity · people with chronic liver diseases
1 finding from 1 review
Health‐related quality of life · people with chronic liver diseases
1 finding from 1 review
Non‐serious adverse events · people with chronic liver diseases
1 finding from 1 review
no estimate extracted
Studies not reported
Very low
Failure of sustained virological response · people with chronic liver diseases
It is very uncertain whether vitamin D changes failure of sustained virological response compared with placebo or no intervention (very low certainty).
1 finding from 1 review
Incidence of pneumonia Defined as patient admitted to hospital with a diagnosis of pneumonia Dose: 2 g per day · school‐aged children (6 to 15 years) and marine corps recruits (mean age 18.5 years)
It is very uncertain whether vitamin C changes incidence of pneumonia Defined as patient admitted to hospital with… compared with placebo (very low certainty).
1 finding from 1 review
Prevalance of pneumonia · school‐aged children (6 to 15 years) and marine corps recruits (mean age 18.5 years)
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Mortality (pneumonia-associated) · school‐aged children (6 to 15 years) and marine corps recruits (mean age 18.5 years)
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Adverse effects (urticaria) Defined as participants reporting urticaria (hives) Dose: 2 g per day · school‐aged children (6 to 15 years) and marine corps recruits (mean age 18.5 years)
It is very uncertain whether vitamin C changes adverse effects (urticaria) Defined as participants reporting… compared with placebo (very low certainty).
1 finding from 1 review
Duration of illness · children under 5 years of age
1 finding from 1 review
no estimate extracted
Studies not reported
Very low
Clinical cure · children under 5 years of age
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Mortality (pneumonia-associated) · children under 5 years of age
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Adverse effects · children under 5 years of age
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Time to cessation of bleeding · adults and children with cystic fibrosis
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found