Equivalency of In vitro fertilization Success Rates in Elective Single Blastocyst Transfer and Elective Double Blastocyst Transfer: An Example of Equivalence Methodology in Clinical Reproductive Health.

Findings suggest comparable pregnancy rates can be achieved in a clinical setting when utilizing eSBT in good-prognosis patients. Although live-birth rate equivalence was not demonstrated, it is thought the additional complications associated with multiple gestations outweigh the potentially higher live-birth rate. The present study highlights the importance of utilizing equivalence analyses when making statements regarding the similarity of two treatments in reproductive health, rather than relying on superiority analyses alone.