Assisted Reproductive Technology in Australia and New Zealand 2011 presents information on all assisted reproduction technology (ART) treatments that took place in 2011 and the resulting pregnancies and births. It is the tenth report using data from the Australian and New Zealand Assisted Reproduction Database (ANZARD) implemented in 2002.
The report presents specific data on clinical pregnancies and live births, and how they vary by treatment type, cause of infertility, women’s age and number of embryos transferred. Also included is information on birth outcomes such as multiple birth, gestational age, birthweight, and perinatal mortality.
The report will be particularly useful to healthcare professionals, governments, academics and researchers with an interest in ART treatment and outcomes and for people undergoing or considering treatment through ART.
The ANZARD was transformed from a cycle-based data collection to a woman-based data collection for treatments undertaken during 2009 (ANZARD2.0). This allows reporting of the number of women undergoing treatment and number of cycles per woman in a treatment year.
The report on Assisted reproduction technology in Australia and New Zealand 2011 has two components:
1. The report is published and available in both electronic and printed formats.
2. Report profile is available in both electronic and printed formats.
In 2011, there were 66,347 treatment cycles undertaken in Australia and New Zealand. Of these, 23.1% resulted in a clinical pregnancy and 17.5% in a live delivery (the birth of at least one liveborn baby).There were 12,623 babies (including 12,443 liveborn) born following ART treatment in 2011.
A continuing trend in ART treatment in Australia and New Zealand has been the reduction in the rate of multiple deliveries, with a decrease from 10.0% in 2007 to 6.9% in 2011. This was achieved by clinicians and patients shifting to single embryo transfer, with the proportion increasing from 63.7% in 2007 to 73.2% in 2011. Importantly, this decrease in the multiple delivery rate was achieved while clinical pregnancy rates remained stable at about 23.0% per initiated cycle.
For the first time, the 2011 annual report presents cumulative pregnancy and live delivery rates. For women who undertook their first autologous fresh cycle between 2009 and 2011, the cumulative live delivery rate was 21.1% after the first cycle, increasing to 31.1% after two cycles, 36.0% after three cycles, 38.6% after four cycles, and 40.0% after five cycles. The cumulative live delivery rate did not increase markedly with additional treatments after five cycles.