Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,126 questions · 1,225 findings · 111 reviews

No studies found 235 · 19.2%GRADE not reported 260 · 21.2%Very low 207 · 16.9%Low 271 · 22.1%Moderate 177 · 14.4%High 75 · 6.1%

Intervention not reported

Asthma exacerbation as defined by hospital admission or treatment with a course of oral corticosteroids · participants with asthma

The review found no eligible studies for this question.

1 finding from 1 review

Intervention not reported

Asthma exacerbation as defined by hospital admission or treatment with a course of oral corticosteroids · participants with exercise‐induced asthma

The review found no eligible studies for this question.

1 finding from 1 review

Higher circulating 25-hydroxyvitamin D (25(OH)D) concentration vs Lower circulating 25-hydroxyvitamin D (25(OH)D) concentration

Fracture · Participants in observational studies

The meta-analysis of observational studies reported a SMD (to OR) of 0.31 (95% CI 0.23 to 0.42) for higher versus lower circulating vitamin D concentration.

1 finding from 1 review

Higher circulating 25-hydroxyvitamin D (25(OH)D) concentration vs Lower circulating 25-hydroxyvitamin D (25(OH)D) concentration

All cause mortality (in CKD patients) · Participants in observational studies

The meta-analysis of observational studies reported a RR of 0.88 (95% CI 0.81 to 0.93) for higher versus lower circulating vitamin D concentration.

1 finding from 1 review

Direct thrombin inhibitors vs low molecular weight heparin

Major VTE events bilateral ascending venography1 · patients with prevention of venous thromboembolism following total hip or knee replacement

Direct thrombin inhibitors showed no clear difference in major VTE events bilateral ascending venography1 compared with low molecular weight heparins (low certainty).

1 finding from 1 review

Direct thrombin inhibitors vs low molecular weight heparin

All‐cause Mortality events · patients with prevention of venous thromboembolism following total hip or knee replacement

Direct thrombin inhibitors probably leads to higher all‐cause Mortality events compared with low molecular weight heparins (moderate certainty).

1 finding from 1 review

Direct thrombin inhibitors vs low molecular weight heparin

Total Bleeding events · patients with prevention of venous thromboembolism following total hip or knee replacement

Direct thrombin inhibitors showed no clear difference in total Bleeding events compared with low molecular weight heparins (low certainty).

1 finding from 1 review

Direct thrombin inhibitors vs low molecular weight heparin

ALT >3 times the upper normal limit · patients with prevention of venous thromboembolism following total hip or knee replacement

Direct thrombin inhibitors may leads to lower ALT >3 times the upper normal limit compared with low molecular weight heparins (low certainty).

1 finding from 1 review

Intervention not reported

Adverse events3 ‐ not reported · patients with improving bone mineral density in children

The review found no eligible studies for this question.

1 finding from 1 review