Odds of an IVF baby? Check the formula

2011-01-05 21:22
London - Want to know your chance of having a baby through in-vitro fertilisation? There's an app for that.

British researchers have devised a formula which they say gives a highly accurate prediction of the potential success of IVF to help couples decide whether to try the treatment.

They have made it available online as a simple computer calculator application and say it will soon be available for download on Apple's iPhones and other cellphones.

Scientists from the Universities of Glasgow and Bristol analysed the details of more than 144 000 IVF cycles to produce a statistical model that can give a prediction of live birth which is up to 99% accurate.

Scott Nelson of the University of Glasgow, who led the research, said: "Treatment-specific factors can be used to provide infertile couples with a very accurate assessment of their chance of a successful outcome following IVF."

Nelson, whose work was published in the Public Library of Science Medicine journal, said that up until now estimates of success had not been very reliable.

The formula takes into account the woman's age, number of years trying to get pregnant, whether she is using her own eggs, the cause of infertility, the number of previous IVF cycles and whether she has previously been pregnant or had a baby.

"The result of this study is a tool which can be used to make incredibly accurate predictions," Nelson said.

His team used data held by the Human Fertilisation and Embryology Authority, which regulates IVF treatment in Britain. They looked at all cycles carried out between 2003 and 2007 and assessed the chances of having a live birth.

The fertility treatment market is big and growing, with an estimated 140 000 IVF cycles in the United States in 2008. As many as 80 million couples worldwide are infertile, experts say.

In the United States and Britain, IVF is successful in about a third of women under the age of 35, but in only five to 10% of women over the age of 40, Nelson said.

Read more on:    health

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