Pregnancy Rate and Implantation Rate Calculations Have Limitations That Can be Overcome by Using Probability J.R. Trimarchi, R.J. Hackett, D.L. Keefe Fertility and Sterility Volume 84, (September 2005) DOI: 10.1016/j.fertnstert.2005.07.1181 Copyright © 2005 American Society for Reproductive Medicine Terms and Conditions
Figure 1 summarizes the IPSs for various combinations of the number of embryos transferred and the number of resulting implantations. Each combination provides a unique IPS value within the range from −1 to +1. Non-pregnant cycles acquire negative IPSs that become more negative with increasing numbers of embryos transferred. Pregnant cycles acquire positive IPSs that are tempered by the number of embryos transferred and the number of implantations. Fertility and Sterility 2005 84, DOI: (10.1016/j.fertnstert.2005.07.1181) Copyright © 2005 American Society for Reproductive Medicine Terms and Conditions