Live birth rates in different subgroups of poor ovarian responders according to Bologna and POSEIDON group classification criteria.

Purpose: The present study was designed to compare the live birth rates (LBRs) according to Bologna criteria or Patient-Oriented Strategies Encompassing IndividualizeD Oocyte Number (POSEIDON) group classifications to determine the important predictive factors for LBR in patients with POR.

Basic Procedures: In this cross-sectional study, the database of Royan Institute (Tehran, Iran) from December 2015 to December 2017 was evaluated and the fertilization/intracytoplasmic sperm injection (IVF/ICSI) cycles outcomes for all the patients with at least one POR after standard controlled ovarian stimulation were collected. The patients divided into five subgroups according to Bologna criteria and four groups on the basis of POSEIDON group classification.