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What do systematic reviews say?

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Evidence found and GRADE certainty

4,815 questions · 6,211 findings · 638 reviews · Headline outcomes only

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No studies found 1,052 · 16.9%GRADE not reported 441 · 7.1%Very low 1,700 · 27.4%Low 1,651 · 26.6%Moderate 1,070 · 17.2%High 297 · 4.8%

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Film dressing vs exposed wound

SSI Assessment method: undefined method · surgical wounds resulting from clean surgery and healing by primary intention

It is very uncertain whether film dressing changes SSI Assessment method: undefined method compared with exposed wound (very low certainty).

1 finding from 1 review

Silver dressing vs exposed wound

SSI Assessment method: CDC definition of SSI · surgical wounds resulting from a range of surgical procedures with some risk of contamination healing by primary intention

It is very uncertain whether silver dressing changes SSI Assessment method: CDC definition of SSI compared with exposed wound (very low certainty).

1 finding from 1 review

Surgery vs LNG‐IUS

Satisfaction rate: surgery versus LNG‐IUS Endometrial ablation versus LNG‐IUS At 2 years · women with heavy menstrual bleeding

Surgery showed no clear difference in satisfaction rate: surgery versus LNG‐IUS Endometrial ablation… compared with LNG‐IUS (low certainty).

1 finding from 1 review

Surgery vs LNG‐IUS

Proportion of women with adverse events Endometrial ablation versus LNG‐IUS. At one year · women with heavy menstrual bleeding

Surgery probably leads to lower proportion of women with adverse events Endometrial ablation versus… compared with LNG‐IUS (moderate certainty).

1 finding from 1 review

Percutaneous ethanol injection vs no intervention, other ablation methods, or systemic treatment

All‐cause mortality at last · people with liver metastases

It is very uncertain whether percutaneous ethanol injection changes mortality at last compared with no intervention, other ablation methods, or systemic treatment (very low certainty).

1 finding from 1 review