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
Serum 25-hydroxyvitamin D level · people with sickle cell disease
1 finding from 1 review
Total body BMD measured by DEXA (% change from baseline) · people with sickle cell disease
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 · people with sickle cell disease
Vitamin D showed no clear difference in adverse events compared with placebo (low certainty).
1 finding from 1 review
Pain frequency or change in pain frequency · people with sickle cell disease
1 finding from 1 review
Acute chest syndrome ( · people with sickle cell disease
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Respiratory infections · people with sickle cell disease
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
HRQoL score (physical functioning) (change from baseline) · people with sickle cell disease
1 finding from 1 review
Linear growth (length/height) Unit: cm Time frame: 3 months · children under 5 years of age
1 finding from 1 review
Mean height‐for‐age z‐score · children under 5 years of age
1 finding from 1 review
Stunting · children under 5 years of age
Vitamin D showed no clear difference in stunting Definition: L/HAZ < ‐2Time frame: 6 months compared with placebo or no intervention (moderate certainty).
1 finding from 1 review
Adverse effect: hypercalciuria As defined by trialists Time frame: 3 months · children under 5 years of age
Vitamin D showed no clear difference in adverse effect: hypercalciuria As defined by trialistsTime frame:… compared with placebo or no intervention (moderate certainty).
1 finding from 1 review