Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,209 questions · 2,322 findings · 227 reviews · Headline outcomes only

No studies found 644 · 27.7%GRADE not reported 135 · 5.8%Very low 591 · 25.5%Low 582 · 25.1%Moderate 309 · 13.3%High 61 · 2.6%

Interventions (vitamin B1, mefenamic acid, tranexamic acid) vs placebo or active comparators (desmopressin, sodium diclofenac, flavonoids)

Menstrual blood loss: mean loss
2 findings from 1 review

Topical clonidine (TC) vs active comparators

Participant‐reported pain relief of 50% or greater · adults with painful diabetic neuropathy

Topical clonidine (TC) showed no clear difference in participant‐reported pain relief of 50% or greater during longest compared with active comparator (low certainty).

1 finding from 1 review

Adaptive servo ventilation (ASV) plus best supportive care vs best supportive care alone or inactive control

Cardiovascular mortality

Adaptive servo ventilation (ASV) plus best supportive care probably leads to higher cardiovascular mortality ‐ up to 80 months Number of participants:… compared with best supportive care alone or inactive control (moderate certainty).

1 finding from 1 review