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Evidence found and GRADE certainty

8 questions · 8 findings · 8 reviews · Gynaecology and Fertility

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No studies found 0 · 0%GRADE not reported 0 · 0%Very low 2 · 25%Low 2 · 25%Moderate 3 · 37.5%High 1 · 12.5%

Embryo culture with low oxygen concentration vs embryo culture with atmospheric oxygen concentration

Clinical pregnancy rate · Patients with clinical pregnancy rate

Embryo culture with low oxygen concentration probably leads to higher clinical pregnancy rate compared with embryo culture with atmospheric oxygen concentration (moderate certainty).

1 finding from 1 review

Repeated single embryo transfer (mixed policies) vs multiple embryo transfer

Clinical pregnancy rate · transfer following in vitro fertilisation or intracytoplasmic sperm injection

Repeated single embryo transfer (mixed policies) showed no clear difference in clinical pregnancy rate compared with multiple embryo transfer (low certainty).

1 finding from 1 review

Day 3 vs Day 2 embryo transfer following IVF or ICSI

Clinical pregnancy rate · Women undergoing in vitro fertilisation or intracytoplasmic sperm injection

It is very uncertain whether day 3 changes clinical pregnancy rate per woman compared with day 2 embryo transfer following IVF or ICSI (very low certainty).

1 finding from 1 review

Letrozole with or without adjuncts vs SERMs with or without adjuncts followed by timed intercourse

Clinical pregnancy rate · infertile women with polycystic ovary syndrome

Letrozole with or without adjuncts leads to higher clinical pregnancy rate compared with SERMs with or without adjuncts followed by timed intercourse (high 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