Comparison of in vitro fertilisation/intracytoplasmic sperm injection on live birth rates in couples with non-male factor infertility and advanced maternal age

Purpose To determine if the use of ICSI in women of advanced maternal age with non-male factor infertility increases chances of live birth. Methods Retrospective data analysis of 10 years of cycle data from a single Australian IVF clinic (Repromed). First cycle patients only of an advanced maternal age (>= 35 years) with non-male factor infertility utilising standard IVF or ICSI insemination and having at least three oocytes collected at egg pick up were assessed for live birth following transfer of single genetically unscreened blastocyst (N = 577). Subanalysis of clinical pregnancy, miscarriage, fertilisation, embryo utilisation rate and having a blastocyst for transfer were considered. Unadjusted, covariate adjusted and propensity score weighted analysis were performed. Results The use of standard IVF insemination in women >= 35 years with non-male factor infertility increased the chance of a live birth compared with ICSI insemination (unadjusted OR = 2.72, 95% CI [1.78, 4.17]; adjusted OR = 2.64, 95% CI [1.64, 4.27] and weighted OR = 2.26, 95% CI [1.72, 2.98] 31% vs 14%). All other outcomes (fertilisation rate, embryo utilisation, blastocyst for embryo transfer and miscarriage rate) were unaffected. Conclusion In couples with advanced maternal age and non-male factor infertility, standard IVF insemination appears to increase the chance of a live birth compared with ICSI. As such, the results of this study support the use of routine IVF as the preferred insemination technique for older women in non-male factor infertility. However, future randomised controlled trials are still required to assess this policy.

Automated summary

The study found that for women of advanced maternal age with non-male factor infertility, the use of standard IVF insemination increased the chance of live birth compared to ICSI insemination. Other outcomes such as fertilisation rate, embryo utilisation, blastocyst transfer, and miscarriage rate were not affected by the choice of insemination method.