Findings

What do systematic reviews say?

Refine by population, intervention, comparison or outcome
More filters
Evidence found and GRADE certainty

204 questions · 208 findings · 37 reviews · Gynaecology and Fertility

No studies found 35 · 16.8%GRADE not reported 4 · 1.9%Very low 62 · 29.8%Low 70 · 33.7%Moderate 32 · 15.4%High 5 · 2.4%

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

Adverse effects during treatment ‐ heaviness in lower abdomen · endometrial hyperplasia

It is very uncertain whether summary of findings table ‐ Metformin + levonorgestrel (intrauterine… changes adverse effects during treatment ‐ heaviness in lower abdomen compared with levonorgestrel intrauterine system (very low certainty).

1 finding from 1 review

Any glucocorticoid vs no glucocorticoids or placebo

Clinical pregnancy rate · assisted reproduction technology cycles

It is very uncertain whether glucocorticoids changes clinical pregnancy rate per couple: dosage and timing of… compared with no glucocorticoids or placebo (very low certainty).

1 finding from 1 review

Endometrial injury vs control

Miscarriage per woman randomised (studies at low risk of selection bias and other bias) · women undergoing assisted reproduction

Endometrial injury showed no clear difference in miscarriage per woman randomised (studies at low risk of selection… compared with control (moderate certainty).

1 finding from 1 review

Fresh vs frozen embryo transfers

Small for gestational age (birth weight below 10th percentile): after first ET · women undergoing assisted reproduction

It is very uncertain whether fresh changes small for gestational age (birth weight below 10th percentile):… compared with frozen embryo transfers (very low certainty).

1 finding from 1 review

Intervention not reported

Adverse events ‐ Ectopic pregnancy Melatonin lower dose versus melatonin higher dose№ of participants: 120(1 RCT) · women with subfertility
1 finding from 1 review

Intervention not reported

Live birth; type of antioxidant (natural conceptions and undergoing fertility treatments) ‐ Melatonin lower dose versus melatonin higher dose№ of participants: 140(2 RCTs) · women with subfertility

The intervention showed no clear difference in live birth; type of antioxidant (natural conceptions and undergoing… (low certainty).

1 finding from 1 review