Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

720 questions · 751 findings · 105 reviews

No studies found 193 · 25.7%GRADE not reported 37 · 4.9%Very low 212 · 28.2%Low 193 · 25.7%Moderate 99 · 13.2%High 17 · 2.3%

Foam sclerotherapy vs placebo

Complications ‐ DVT · participants with varicose veinsa

It is very uncertain whether foam sclerotherapy changes complications ‐ DVT compared with placebo (very low certainty).

1 finding from 1 review

Foam sclerotherapy vs placebo

Residual varicose veins · participants with varicose veinsa

It is very uncertain whether foam sclerotherapy changes residual varicose veins compared with placebo (very low certainty).

1 finding from 1 review

Foam sclerotherapy vs foam sclerotherapy

Cosmetic appearance · participants with varicose veinsa

It is very uncertain whether foam sclerotherapy changes cosmetic appearance (self‐described cosmetic improvement) compared with foam sclerotherapy (very low certainty).

1 finding from 1 review