Success rates in assisted reproduction

The different assisted reproduction techniques have different success rates, i.e. an uneven possibility of achieving pregnancy. One of the factors that have the most influence is the age of the woman, which means most of the clinics present an unlike success rate in the different age ranges.

Techniques and pregnancy rates

Success rate with artificial insemination

Insemination with partner’s sperm

Artificial insemination (AI) is not recommended for women older than 37, due to its ineffectiveness.

Women younger than 35 years: 17-23% pregnancy rate
Women between 35 and 40 years: 15-21% pregnancy rate
Women older than 40: <13% pregnancy rate

Furthermore, it’s been proved that the possibilities of achieving pregnancy increase, if more than one cycle is performed. That’s why it’s said that artificial insemination has a cumulative success rate.

One cycle: 15-23% pregnancy rate
Two cycles: 26-34% pregnancy rate
Three cycles: 35-42% pregnancy rate
Four cycles: 40-60% pregnancy rate

Artificial insemination with donors sperm (AID)

When donor’s sperm is used, the likelihood of achieving pregnancy increases slightly, since donors must have an exceptional seminal quality to be accepted.

Women younger than 35 years: 17-33% pregnancy rate
Women between 35 and 40 years: 17-29% pregnancy rate
Women older than 40: <16% pregnancy rate

The cumulative success rate of the artificial insemination with donor is:

One cycle: 17-28% pregnancy rate
Two cycles: 30-46% pregnancy rate
Three cycles: 48-60% pregnancy rate
Four cycles: 60-75% pregnancy rate

Pregnancy rate with IVF

IVF is a technique with higher intervention of the specialist. It’s recommended for the most severe fertility alterations, or when there have been repeated failures with artificial insemination. Donor’s eggs and sperm can be used if needed.

IVF with eggs and sperm of the couple

Women younger than 35 years: 30-60% pregnancy rate
Women between 35 and 40 years: 27-40% pregnancy rate
Women older than 40: <30% pregnancy rate

IVF with egg donation and sperm of the couple

Women younger than 35 years: 55-63% pregnancy rate
Women between 35 and 40 years: 55-60% pregnancy rate
Women older than 40: 55-60% pregnancy rate

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