showed a trendP = 0.2114
Blastocyst ET showed a trend toward a higher implantation and LB rates compared with day-3 ET cycles (implantation rate: 25.6% in single day-3 ET versus 40% single blastocyst ET, P = 0.2114; LBR: 18.6% single day-3 ET versus single blastocyst ET, P = 0.7165).