Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

973 questions · 1,024 findings · 106 reviews

No studies found 235 · 22.9%GRADE not reported 59 · 5.8%Very low 207 · 20.2%Low 271 · 26.5%Moderate 177 · 17.3%High 75 · 7.3%

Dietary supplements vs placebo

Dill seed versus placebo Pain score · women with moderate or severe primary dysmenorrhoea
3 findings from 1 review

Chinese herbal medicines plus western medicine vs Western medicine

New fractures · patients with osteoporosis

It is very uncertain whether chinese herbal medicines plus western medicine changes new fractures (Xianlinggubao capsule (low‐dose) plus calcium and… compared with western medicine (very low certainty).

3 findings from 1 review

Intervention not reported

Vitamin C adherence · Various (pregnant women; daily smokers aged 16 and older; university students; children aged 5‐13)
1 finding from 1 review