Abstract
Purpose: To evaluate implantation rate as a function of age.
Methods: A total of 1621 consecutive cycles of IVF wereevaluated for implantation as a function of age at The NewYork Hospital/Cornell Medical Center.
Results: An overall implantation rate of 23.3% (1328/5691)was found. The implantation rate as a function of agedecreased in a nonlinear fashion. Implantation remainedconstant until the age of 35 and then decreased in a significantly,linear fashion by 2.77% per year (P < 0.001, R2 =0.975). A formula to predict implantation rates for a givenage was developed: Implantation rate = −119.352 + (9.985× Age − (0.164 × Age2)).
Conclusions: We have demonstrated that implantation ratesremain constant until the age of 35 at which time a lineardecrease of 2.77% per year is observed.
Keywords: Implantation, IVF-ET, maternal age
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