Graph1. Cumulative pregnancy rate in PC-IVF and FT- IVF group
Further stratification according previous cycles of conventional IVF was done to determine how many conventional IVF stimulation is ‘too much’ for one patient, or is “more is really better”. Cumulative pregnancy rate is calculated. As shown in Grpah2, it is obvious that when 3 or more cycles has been performed, the clinical outcomes are significantly worsened.