Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

511 questions · 561 findings · 70 reviews · Gynaecology and Fertility

No studies found 91 · 16.2%GRADE not reported 5 · 0.9%Very low 140 · 25%Low 219 · 39%Moderate 98 · 17.5%High 8 · 1.4%

GnRHa treatment vs placebo or no pretreatment

Operating time · women with uterine fibroids
3 findings from 1 review

GnRHa treatment vs placebo or no pretreatment

Intraoperative blood loss (mL) · women with uterine fibroids
3 findings from 1 review

GnRHa treatment vs placebo or no pretreatment

Blood transfusion · women with uterine fibroids

GnRHa treatment showed no clear difference in blood transfusions compared with no pretreatment or placebo before myomectomy (operative and… (low certainty).

3 findings from 1 review

GnRHa treatment vs placebo or no pretreatment

Overall postoperative morbidity · women with uterine fibroids

GnRHa treatment showed no clear difference in postoperative morbidity compared with no pretreatment or placebo before myomectomy (operative and… (low certainty).

3 findings from 1 review

SPRM vs placebo

Preoperative bleeding: (PBAC < 75) ulipristal acetate 5 mg · women with uterine fibroids

SPRM may leads to higher preoperative bleeding: (PBAC < 75) ulipristal acetate 5 mg compared with placebo (low certainty).

1 finding from 1 review

SPRM vs placebo

Preoperative bleeding: Reduction in bleeding to PBAC < 75 ulipristal acetate 10 mg · women with uterine fibroids

SPRM may leads to higher preoperative bleeding: Reduction in menstrual bleeding (PBAC < 75)… compared with placebo (low certainty).

1 finding from 1 review

Metformin vs placebo or no treatment

Gastrointestinal adverse events · Women with polycystic ovary syndrome, oligo amenorrhoea and subfertility

Metformin probably leads to higher adverse events (gastrointestinal) per woman compared with placebo or no treatment (moderate certainty).

1 finding from 1 review

Metformin vs placebo or no treatment

Clinical pregnancy rate · Women with polycystic ovary syndrome, oligo amenorrhoea and subfertility

Metformin probably leads to higher clinical pregnancy rate per woman compared with placebo or no treatment (moderate certainty).

1 finding from 1 review