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What do systematic reviews say?

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Evidence found and GRADE certainty

3,097 questions · 3,266 findings · 631 reviews

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No studies found 430 · 13.2%GRADE not reported 193 · 5.9%Very low 995 · 30.5%Low 904 · 27.7%Moderate 591 · 18.1%High 153 · 4.7%

Endometrial injury vs control

Clinical pregnancy per woman randomised: sensitivity analysis (no high‐risk) · women undergoing assisted reproduction

Endometrial injury showed no clear difference in clinical pregnancy per woman randomised: sensitivity analysis (no… compared with control (low certainty).

1 finding from 1 review

Belimumab 10 mg/kg vs placebo

Reduction of at least 4 points in SELENA‐SLEDAI at 52 weeks SELENA‐SLEDAI score, a validated marker of SLE disease activity (range 0 to 105; higher score = worse disease activity) · people with active systemic lupus erythematosus (but not active nephritis or active central nervous system involvement)

Belimumab 10 mg/kg leads to higher reduction of at least 4 points in SELENA‐SLEDAI at 52 weeks… compared with placebo (high certainty).

1 finding from 1 review

Cannabinoids vs placebo

Agitated or aggressive behaviours in dementia patients, measured on the Cohen‐Mansfield Agitation Inventory (CMAI) Scale (range 29 to 203, with 29 meaning no symptoms, and higher number of points indicating more severe symptoms)Â · diagnosis of dementia (dementia in Alzheimer’s disease, vascular dementia, or mixed dementia; any severity
1 finding from 1 review