Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,695 questions · 4,979 findings · 433 reviews

No studies found 998 · 20%GRADE not reported 1,140 · 22.9%Very low 1,024 · 20.6%Low 1,029 · 20.7%Moderate 636 · 12.8%High 152 · 3.1%

Transdermal oestrogens vs oral oestrogens

Clinical pregnancy rate · women undergoing embryo transfer with frozen embryos or embryos derived from donor oocytes

Transdermal oestrogens showed no clear difference in clinical pregnancy rate compared with oral oestrogens (low certainty).

1 finding from 1 review

LNG‐IUS vs another combined low‐dose OCP

Uterine fibroid‐related symptoms (abnormal uterine bleeding, measured at 12 weeks, with the pictorial blood assessment chart (PBAC); lower = better) · women with uterine fibroids
2 findings from 1 review