Findings

What do systematic reviews say?

2,261 questions · 2,280 findings · 114 reviews · Cystic Fibrosis and Genetic Disorders

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No studies found 856 · 37.5%GRADE not reported 58 · 2.5%Very low 550 · 24.1%Low 502 · 22%Moderate 271 · 11.9%High 43 · 1.9%

Vitamin D vs placebo

Serum 25-hydroxyvitamin D level · people with sickle cell disease

1 finding from 1 review

Vitamin D supplementation for sickle cell disease 2020 · Cochrane Headline outcomes only
no estimate extracted
1 study · 37 participants
Moderate

Vitamin D 100,000 IU/month vs 12,000 IU/month

Adverse events · people with sickle cell disease

1 finding from 1 review

Vitamin D supplementation for sickle cell disease 2020 · Cochrane Headline outcomes only
no estimate extracted
1 study · 62 participants
Low

Vitamin D 100,000 IU/month vs 12,000 IU/month

Pain: presence of pain (slight or moderate) at 1 year · people with sickle cell disease

Vitamin D 100,000 IU/month showed no clear difference in presence of pain compared with 12,000 IU/month (moderate certainty).

1 finding from 1 review

Vitamin D supplementation for sickle cell disease 2020 · Cochrane Headline outcomes only
RR 1 [0.62, 1.62]
1 study · 62 participants
Moderate

Vitamin D 100,000 IU/month vs 12,000 IU/month

Acute chest syndrome ( · people with sickle cell disease

1 finding from 1 review

Vitamin D supplementation for sickle cell disease 2020 · Cochrane Headline outcomes only
no estimate extracted
1 study · 62 participants
Moderate

Vitamin D 100,000 IU/month vs 12,000 IU/month

Respiratory infections · people with sickle cell disease

1 finding from 1 review

Vitamin D supplementation for sickle cell disease 2020 · Cochrane Headline outcomes only
no estimate extracted
1 study · 62 participants
Moderate

Vitamin D 100,000 IU/month vs 12,000 IU/month

HRQoL (using a validated scale) · people with sickle cell disease

The review found no eligible studies for this question.

1 finding from 1 review

Vitamin D supplementation for sickle cell disease 2020 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Vitamin D vs placebo

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

Vitamin D supplementation for sickle cell disease 2020 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Vitamin D vs placebo

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

Vitamin D supplementation for sickle cell disease 2020 · Cochrane Headline outcomes only
RR 3.16 [0.14, 72.84]
1 study · 37 participants
Low

Vitamin D vs placebo

Pain frequency or change in pain frequency · people with sickle cell disease

1 finding from 1 review

Vitamin D supplementation for sickle cell disease 2020 · Cochrane Headline outcomes only
no estimate extracted
1 study · 37 participants
Low

Vitamin D vs placebo

Acute chest syndrome ( · people with sickle cell disease

The review found no eligible studies for this question.

1 finding from 1 review

Vitamin D supplementation for sickle cell disease 2020 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Vitamin D vs placebo

Respiratory infections · people with sickle cell disease

The review found no eligible studies for this question.

1 finding from 1 review

Vitamin D supplementation for sickle cell disease 2020 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Vitamin D vs placebo

HRQoL score (physical functioning) (change from baseline) · people with sickle cell disease

1 finding from 1 review

Vitamin D supplementation for sickle cell disease 2020 · Cochrane Headline outcomes only
no estimate extracted
1 study · 37 participants
Low

Vitamin D 100,000 IU/month vs 12,000 IU/month

Serum 25-hydroxyvitamin D level · people with sickle cell disease

1 finding from 1 review

Vitamin D supplementation for sickle cell disease 2020 · Cochrane Headline outcomes only
no estimate extracted
1 study · 57 participants
Low

Vitamin D 100,000 IU/month vs 12,000 IU/month

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

Vitamin D supplementation for sickle cell disease 2020 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Intervention not reported

Final height and change in height · people with thalassaemia (any age)

The review found no eligible studies for this question.

1 finding from 1 review

Growth hormone therapy for people with thalassaemia 2020 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Intervention not reported

Adverse effects Oral glucose tolerance test (mg/dL) (at one year) · people with thalassaemia (any age)

1 finding from 1 review

Growth hormone therapy for people with thalassaemia 2020 · Cochrane Headline outcomes only
no estimate extracted
1 study · 20 participants
Moderate

Intervention not reported

Height SDS(at one year) · people with thalassaemia (any age)

1 finding from 1 review

Growth hormone therapy for people with thalassaemia 2020 · Cochrane Headline outcomes only
no estimate extracted
1 study · 20 participants
Moderate

Intervention not reported

Change in height SDS (difference between baseline and final visit at one year) · people with thalassaemia (any age)

1 finding from 1 review

Growth hormone therapy for people with thalassaemia 2020 · Cochrane Headline outcomes only
no estimate extracted
1 study · 20 participants
Moderate

Intervention not reported

Height velocity (cm/year) · people with thalassaemia (any age)

1 finding from 1 review

Growth hormone therapy for people with thalassaemia 2020 · Cochrane Headline outcomes only
no estimate extracted
1 study · 20 participants
Moderate

Intervention not reported

Height velocity SDS · people with thalassaemia (any age)

1 finding from 1 review

Growth hormone therapy for people with thalassaemia 2020 · Cochrane Headline outcomes only
no estimate extracted
1 study · 20 participants
Moderate