Clinic B is better! Why?
Clinic A is advertising an IVF Success Rate of 70%. In small print at the bottom of the ad, they explain that they are giving you the number of patients who developed a clinical pregnancy (a pregnancy sac within the uterus on ultrasound) divided by the number of women who received an embryo transfer. Clinic B is providing the number of women achieving a living child divided by the number of women who started stimulation with fertility drugs. This is the method of explaining pregnancy rates which is endorsed by the American Society for Reproductive Medicine (ASRM) and the Society for Assisted Reproductive Technology (SART) as the preferred and most legitimate method for reporting pregnancy rates after IVF.
