Selection of competent blastocysts for transfer by combining time-lapse monitoring and array CGH testing for patients undergoing preimplantation genetic screening: a prospective study with sibling oocytes

Table 4 Comparison of pregnancy and implantation outcomes between time-lapse (Group A) and conventional incubator (Group B), as well as the mixed embryo transfer

Parameters	Group A	Group B	Mixed	pvalue
Patient with SET	19	15	n/a
Patient with DET	26	22	45
Clinical pregnancies after SET	10	5	n/a
Clinical pregnancies after DET	21	11	24
Clinical pregnancy rate	71.1%	45.9%	53.3%	0.037^a
Implantation rate	66.2%	42.4%	47.8%	0.011^a
Ongoing pregnancy rate	68.9%	40.5%	48.9%	0.019^a
Pregnancy loss rate	3.1%	11.8%	8.3%	0.273^b

SET = single embryo transfer; DET = double embryo transfer; Mixed = mixed embryo transfer (one from the time-lapse system and one from the conventional incubator); ^aGroup A vs. Group B, by Chi-square analysis; ^bGroup A vs. Group B, by Fisher’s exact test.

ISSN: 1755-8794