Word: predictableness
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That may explain why IVF success rates are so variable; why, though two couples may produce an equal number of healthy embryos, one becomes pregnant while the other doesn't. "Using only these four factors, we can predict pregnancy with an accuracy of 70%," says Dr. Mylene Yao, professor of obstetrics and gynecology at Stanford and lead author of the study. "And it's extremely interesting that the four factors do not actually relate to the embryos that are transferred to the womb. So while it's still important to identify the best embryos for transfer, this suggests that...
While fertility specialists have long known about these factors and their role in predicting IVF success, Yao and her team have set out to determine which ones matter most - and how each factor affects the others in individual cases. For instance, doctors know that older women in general have a more difficult time conceiving. But Yao believes it should be possible to better predict whether a woman in her 40s will get pregnant through IVF based on the overall quality of the embryos she and her partner produce. Doctors already use their own algorithms for determining a couple's chances...
Before that can happen, however, Dr. Zev Rosenwaks, director of the Center for Reproductive Medicine at Weill Cornell Medical College, notes that more data needs to be collected on the power of these factors to predict not just a pregnancy, but a viable pregnancy. "This is a very interesting study, but I don't think it changes our ability to predict pregnancy," he says...
...team is already planning to expand their study to analyze how well these four variables will be able to predict live births. If the factors prove predictive, they could provide infertile couples with some much-needed guidance in making a very difficult decision...
...come up with to soil my character," says Anwar. "But I don't think the public will be so gullible to believe this accusation. I've had senior politicians tell me that people are angry, that the government has lost all credibility by doing this." Even Hollywood can't predict how this story will...