It is important to emphasize that average statistics may, or may not, apply to an individual patient within an age group. Other factors influencing outcome are the success or failure of fertilization and cleavage in vitro, the number of embryos transferred and cryopreserved, and the adequacy of the luteal phase after transfer. In addition, success rates increase as the number of IVF stimulation attempts increases. There are several methods of calculating pregnancy rates. We include our Total Reproductive Potential Success Rates, our IVF Success Rates by Female Age, and our Cumulative Success Rates.
Cumulative rates indicate how many pregnancies occur when a female undergoes more than one cycle.
Table I lists the success rates from our most recent IVF cycles. TRP refers to the number of pregnancies resulting from fresh or frozen pre-embryos. Many patients elect to freeze excess pre-embryos for use in future cycles. This process greatly reduces the costs for multiple transfer attempts. The Jones Institute consistently produces cryo pregnancy rates among the highest in the world.