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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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Metformin vs megestrol

Regression of endometrial hyperplasia (with or without atypia) to proliferative, secretory, or atrophic endometrium · endometrial hyperplasia

It is very uncertain whether summary of findings table ‐ Metformin changes regression of endometrial hyperplasia (with or without atypia) to… compared with megestrol (very low certainty).

1 finding from 1 review

The LNG‐IUS with endometrial surveillance vs endometrial surveillance alone

Endometrial Polyps · endometrial protection in women with breast cancer on adjuvant tamoxifen

The LNG‐IUS with endometrial surveillance probably leads to lower endometrial polyps compared with endometrial surveillance alone (moderate certainty).

1 finding from 1 review

The LNG‐IUS with endometrial surveillance vs endometrial surveillance alone

Endometrial Hyperplasia · endometrial protection in women with breast cancer on adjuvant tamoxifen

The LNG‐IUS with endometrial surveillance probably leads to lower endometrial hyperplasia compared with endometrial surveillance alone (moderate certainty).

1 finding from 1 review

Summary of findings table ‐ Metformin + megestrol vs megestrol

Progression of endometrial hyperplasia to endometrial cancer · endometrial hyerplasia

It is very uncertain whether summary of findings table ‐ Metformin + megestrol changes progression of endometrial hyperplasia to endometrial cancer compared with megestrol (very low certainty).

1 finding from 1 review

Summary of findings table ‐ Metformin + megestrol vs megestrol

Regression of endometrial hyperplasia (with or without atypia) to proliferative, secretory, or atrophic endometrium · endometrial hyerplasia

Summary of findings table ‐ Metformin + megestrol may leads to higher regression of endometrial hyperplasia (with or without atypia) to… compared with megestrol (low certainty).

1 finding from 1 review

Summary of findings table ‐ Metformin + levonorgestrel (intrauterine system) vs levonorgestrel intrauterine system

Regression of endometrial hyperplasia (with or without atypia) to proliferative, secretory, or atrophic endometrium · endometrial hyperplasia

It is very uncertain whether summary of findings table ‐ Metformin + levonorgestrel (intrauterine… changes regression of endometrial hyperplasia (with or without atypia) to… compared with levonorgestrel intrauterine system (very low certainty).

1 finding from 1 review

Indomethacin vs placebo or control

Failure of PDA closure within 1 week of administration of the first dose of indomethacin · symptomatic patent ductus arteriosus in preterm infants

Indomethacin leads to lower failure of PDA closure within 1 week of administration of the first… compared with placebo or control (high certainty).

1 finding from 1 review

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

Failure to clear liver metastases or recurrence of liver metastases · people with liver metastases

It is very uncertain whether percutaneous ethanol injection changes failure to clear liver metastases or recurrence of liver metastases compared with no intervention, other ablation methods, or systemic treatment (very low certainty).

1 finding from 1 review