Table I. Definition of Day 3 embryo quality as ‘Good Quality Embryo’ (1), ‘Medium Quality Embryo’ (2) or ‘Poor Quality Embryo’ (3).

Fragmentation (%)	Embryo stage
	7, 8, 9 or 10 cells	12, 11, 5, 6 cells, compaction, B-blastocyst, morula	1, 2, 3 or 4 cells
<10	1	2	3
10–50	2	2	3
>50	3	3	3