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Chances for second IVF baby good, study shows

By HealthDay News

If you've had one baby through fertility treatment, your chances for a second success are good, a new study suggests.

Researchers analyzed data from more than 35,000 women in Australia and New Zealand who had a live baby after in vitro fertilization.

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The women were treated between 2009 and 2013 and followed to 2015. Live births up to October 2016 were included in the study.

After one success, the chances of having a second IVF baby were between 51 percent and 88 percent after six cycles of treatment, the researchers said.

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The likelihood of a successful pregnancy declined with age and whether women used a fresh or frozen embryo. Compared to women under 30, those between 35 and 39 saw their odds of success drop by 22 percent if they used an embryo frozen after a previous ovarian stimulation cycle. Their odds dropped 50 percent if they had a fresh embryo from a new stimulation cycle.

Factors such as requiring only one cycle and a single embryo transfer to achieve a first live birth and infertility affecting the male partner affected chances of success, according to the study published earlier this month in the journal Human Reproduction.

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"Couples can be reassured by these figures," said author Georgina Chambers, director of the National Perinatal Epidemiology and Statistics Unit at the University of New South Wales in Sydney, Australia.

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She said the findings underscore the fact that assisted reproductive technology should be considered as a course of treatment, not just a single cycle.

"If couples don't achieve a pregnancy in the first cycle, it could very well happen in the next," Chambers said in a journal news release. "However, it would be best not to wait too long, especially if a new stimulation cycle is needed."

Co-author Dr. Devora Lieberman, a fertility clinician in Sydney, said the findings can be used to counsel patients, but it's important to note that these are population estimates and every couple is different.

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More information

The U.S. National Institute of Child Health and Human Development has more on assisted reproductive technology.

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