New method may help predict IVF success

Just four factors can predict with 70 percent accuracy whether a woman will become pregnant through "test-tube" baby technology known as in vitro fertilization, U.S. researchers said on Tuesday.

In vitro fertilization, or IVF, is a costly treatment that aims to increase a woman's chances of becoming pregnant but in the United States it is successful only 18 to 45 percent of the time, according to the Society for Assisted Reproductive Technology.

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