Table 2.

Diploidy/tetraploidy (2n/4n) mosaicism in two stages of embryo development

	2-cell embryo 2n/4n mosaicism rate (%)	5- to 8-cell embryo 2n/4n mosiacism rate (%)
In-vivo matured oocytes	1.0 (2/199)*	10.2 (19/187)*
In-vitro matured oocytes	0.9 (2/224)**	5.9 (6/102)**

Mosaicism rates were compared between the in-vivo and in-vitro matured oocyte group using χ² analysis and between embryo stages in each group. While no significant difference was detected between oocyte maturation groups, there was a significant increase in five- to eight-cell mosaicism rates compared with that observed in two-cell embryos

*p < 0.001

**p < 0.05