Table 1. Microarray analysis of human blastocysts in patients undergoing in vitro fertilization and preimplantation genetic screening.

Observations	Advanced maternal age	Recurrent miscarriage	Total
No. of cycles	51	21	72
Average age	40.2±2.8	33.2±2.2
No. of zygote (2 pronuclei)	375	197	572
No. (%)* of blastocysts biopsied	246 (65.6)	137 (69.5)	383 (67.0)
No. (%) of samples with DNA signals	242 (98.4)	135 (98.5)	377 (98.4)
No. (%) of normal embryos	87 (36.0)a	71 (52.6)b	158 (41.9)
No. (%) of abnormal embryos**	155 (64.0)a	64 (47.4)b	219 (58.1)
No. (%) of patients with embryo(s) for transfer	33 (64.7)c	19 (90.5)d	52 (72.2)

^*Blastocyst rate, out of zygotes (2 pronuclei).

^**Abnormal embryos include aneuploidy, chromosome deletions and duplications.

^abP<0.01 within the same row.

^cdP<0.05.