. 2021 Feb 26;51(1):68–75. doi: 10.3906/sag-1710-194

Table.

Table. Comparison of splitting and developmental efficiency* after IES according to the sources of embryos.

Source type of embryos	Embryos manipulated for twinning	Embryos survived after twinning	Embryo development		Splitting efficiency, % (n/N)	Developmental efficiency, % (n/N)
Source type of embryos	Embryos manipulated for twinning	Embryos survived after twinning	Morula	Blastocyst	Splitting efficiency, % (n/N)	Developmental efficiency, % (n/N)
Frozen-warmed	20	39	10	18	140 (28/20)	71.7 (28/39)
Aneuploid	32	59	13	18	96.8 (31/32)	52.5 (31/59)
Parthenogenetic	22	40	6	2	36.3(8/22)	20 (8/40)
IVM-derived	18	28	2	1	16.6 (3/18)	10.7 (3/28)

*Splitting efficiency was defined as the ratio of morula and blastocysts to embryos manipulated for twinning. Developmental efficiency was defined as the ratio of morula and blastocysts to the embryos available after twinning.