Clinical predictive criteria associated with live birth following elective single embryo transfer

ObjectiveWe aimed to define clinical criteria from the patients related to the occurrence of live birth in case of elective single embryo transfer (eSET).Study designWe analyzed retrospectively 409 eSET at day 2/3 between March 2005 and July 2012, proposed in case of (i) woman's age <37 years, (ii) first/second IVF0 cycle, (iii) ≥2 good quality embryos obtained (3-5/6-10 blastomeres at day 2/3 and <20% fragmentation), including one top embryo (4/8 cells). In all, 124/409 live births (30.3%) were obtained, separating patients into groups of women who had birth or not. Different clinical parameters of interest were compared between each group, using appropriate statistical tests at p < 0.05 significance level.ResultsBy comparing Body Mass Index (BMI), we report a statistically higher BMI among women who did not deliver (24.6 vs. 23.4 kg/m2; p = 0.014). Using an analysis by BMI categories, we also precise a threshold of BMI ≥ 30 kg/m2, negatively associated with the occurrence of live birth.ConclusionBMI appears to be the only clinical parameter statistically associated with delivery following eSET strategy in a good prognosis infertile population.