Findings

What do systematic reviews say?

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

75 questions · 83 findings · 5 reviews

No studies found 27 · 32.5%GRADE not reported 0 · 0%Very low 23 · 27.7%Low 22 · 26.5%Moderate 10 · 12%High 1 · 1.2%

Combined oral contraceptive pill vs no pretreatment

Live birth or ongoing pregnancy · women undergoing assisted reproduction

Combined oral contraceptive pill probably leads to lower live birth or ongoing pregnancy (COCP + Ant vs Ant) compared with no pretreatment (moderate certainty).

2 findings from 1 review

Combined oral contraceptive pill vs no pretreatment

Pregnancy loss · women undergoing assisted reproduction

Combined oral contraceptive pill showed no clear difference in pregnancy loss (COCP + Ant vs Ant) compared with no pretreatment (moderate certainty).

2 findings from 1 review

Combined oral contraceptive pill vs no pretreatment

Multiple pregnancy rate · women undergoing assisted reproduction

Combined oral contraceptive pill showed no clear difference in multiple pregnancy rate (COCP + Ant vs Ant) compared with no pretreatment (low certainty).

2 findings from 1 review

Combined oral contraceptive pill vs no pretreatment

OHSS · women undergoing assisted reproduction

Combined oral contraceptive pill showed no clear difference in OHSS rate (COCP + Ant vs Ant) compared with no pretreatment (low certainty).

2 findings from 1 review

Combined oral contraceptive pill vs levonorgestrel intrauterine system

Adverse effects ‐ Any adverse events · heavy menstrual bleeding

It is very uncertain whether combined oral contraceptive pill changes adverse effects ‐ Any adverse events compared with levonorgestrel‐releasing intrauterine system (very low certainty).

1 finding from 1 review