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Fertility Glossary

Clinical pregnancy rate

The proportion of cycles or transfers resulting in a clinical pregnancy.

Pregnancy after fertility treatment

Clinical pregnancy rates are higher than live birth rates because some pregnancies end in miscarriage. The HFEA encourages comparing live birth rates where possible.

Sources

Last reviewed: 23 September 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.

Related terms

Clinical pregnancy

A pregnancy confirmed on ultrasound, usually by a gestational sac.

Live birth rate

The proportion of cycles, egg collections or transfers resulting in a live birth.

Clinic success rate

A clinic's reported chance of pregnancy or birth after treatment.

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