For most couples having difficulty achieving a pregnancy their chance of achieving a pregnancy is not zero, it is just lower than the average rate of conception—unless both Fallopian tubes are completely blocked, there is no sperm, or the woman never ovulates. Ovulation induction (or superovulation) with IUI helps patients to achieve pregnancy rates closer to the natural per cycle chance of pregnancy for women in their age group who do not have infertility (see fig 1).
