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Fertility Treatment Success Rates

All couples with fertility problems want to be treated in a clinic that has the highest possible success rates.  At Fertility PLUS we are proud of our consistently good success rates which can be found below.

For each individual couple their underlying fertility problem and age may have far more impact on their chances of success than treatment outcomes for a clinic as a whole.

Understanding pregnancy rates

Pregnancy rates can be expressed in a variety of ways which can make comparing results between clinics difficult and can also provide overly optimistic or pessimistic information for couples depending on where they are in their treatment experience.

Typical ways of expressing pregnancy rate include:

Live birth rate per treatment cycle started

This gives the lowest success rate as it includes cycles where women over or under responded to stimulation drugs so did not proceed to egg collection, where no eggs were collected, or no eggs fertilised, or where the embryos were frozen without a fresh embryo transfer in order to avoid OHSS.

Clinical pregnancy rate per embryo transfer

This does not take into account women who miscarry or the pregnancies that result from the use of any frozen embryos.

Cumulative live birth rate per fresh embryo transfer and any subsequent frozen embryo transfers

This includes all babies born from a single egg collection, after either a fresh or frozen embryo transfer. This gives the chance of a live birth from an egg collection after having a fresh transfer and/or thawed embryo transfers.


This method of showing success rates is the most useful for couples about to embark on their first cycle of publicly funded IVF. It takes account of the fact that some couples who do not conceive on a fresh embryo transfer from their IVF cycle may have a successful pregnancy following a frozen embryo transfer. About 45% of couples have embryos frozen. Fertility PLUS has maintained a high pregnancy rate from thawed embryo cycles for many years.

Couples having publicly funded treatment must thaw their frozen embryos before having a second publicly funded cycle. If they conceive from the first IVF cycle, the public funding still covers the thawing and replacement of any remaining frozen embryos up until there are two children born to the relationship.

IVF pregnancy rates

The specialist at Fertility PLUS can give you statistics for your individual chance of a live birth based on your age, cause and duration of infertility.

The most important factors affecting success rates are female age, weight and cause of infertility. The following data is the live birth rates per fresh embryo transfer and frozen embryo transfer over a three year period from 2014 to 2016. It does not include treatments that used donor eggs or pre-implantation genetic testing of embryos.

It is useful to know that not every cycle of IVF that starts will result in an embryo transfer – some cycles don’t make it to egg collection, some cycles don’t have eggs at egg collection and sometimes the eggs don’t fertilise. Around 50% of cycles will have embryos to freeze.

 The Reproductive Technology Accreditation Committee of Australia and NZ (RTAC) have requested that all clinics present their data as live birth rates and separated into the following age groups so it is easier for consumers to understand clinic success rates. For further information and for help understanding please see this website: https://www.fertilitysociety.com.au/wp-content/uploads/How-to-choose-an-IVF-clinic-and-understand-success-rates_ACCESS-1.pdf    


Donor Insemination pregnancy rates

  • The most important factor affecting success rates for donor insemination (DI) is female age. With successive cycles an increasing proportion of women receiving DI treatment will conceive. The pregnancy rate for women under 40 years of age having DI at Fertility PLUS is approximately 20% per insemination. This is based on the last 10 years results.
  • Intra-uterine Insemination success rates

    Success rates for individual couple vary significantly with female age. For women under 40 years of age having Intrauterine insemination (IUI) at Fertility PLUS, the clinical pregnancy rate over the last 10 years is approximately 13% per insemination. As with DI, women having successive cycles of IUI will increase their chances of conceiving.

    How likely am I to become pregnant?

    Once we have reviewed your medical history and test results we can discuss with you what your chances of becoming pregnant thought fertility treatment are. Many couples find it difficult to make sense of reported success for different treatments and clinics. Please feel free to ask us if you feel that you need more information.

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