Table 2.

In vitro embryo development.

	H	L	p
Average oocytes retrieved	7 [5, 10]	3 [2, 4]	< 0.0001b
Average MII oocytes	6 [4, 9]	2 [1,4]	< 0.0001b
Rate of MII (%)	1658/1809 (91.65)	677/719 (94.16)	0.0323 a
Normal fertilization (%)	1323/1658 (79.8)	540/677 (79.8)	0.9864 a
Top D3 embryos from 2PN (%)	942/1323 (71.2)	356/540 (65.93)	0.0246 a
Usable blastocyst formation (%)	353/712 (49.58)	28/55 (50.91)	0.8492 a

Data are presented as the median [the first quartile, the third quartile] or count (percentage).

Normal fertilization was calculated as the ratio of 2PN zygotes to MII oocytes.

^aChi-squared test.

^bMann–Whitney U test.