The number of women in their forties trying Assisted Reproductive Technologies of all sorts has gone up dramatically in the last few years.
The proportion who succeed, though, has not. The Yale Fertility Clinic puts the success rate after 42 at 9%, where it has been for some years.
Yet many women coming to the clinic, who are highly educated and well-informed about many other things, have only a vague notion that fertility declines dramatically in their thirties. They are often surprised, even offended, when told that they waited too long.