Table 3. Euploidy status of blastocysts based on embryo quality grade and day of development
Grade	Day 5	Day 6	Day 7*
# Grade AA	556	330	19
# Euploid	325	165	12
% Euploid	58.5%a	50.0%b	63.2%
# Grade AB	161	146	16
# Euploid	62	54	7
% Euploid	38.5%	37.0%	43.8%
# Grade BA	78	166	22
# Euploid	46	69	9
% Euploid	59.0%a	41.6%b	40.9%
# Grade BB	77	220	41
# Euploid	33	62	15
% Euploid	42.9%a	28.2%b	36.6%
#Grade BC	2	17	5
# Euploid	0	5	0
% Euploid	0.0%	29.4%	0.0%
# Grade CB	3	24	19
# Euploid	2	8	2
% Euploid	66.7%	33.3%	10.5%
# Grade CC	0	3	1
# Euploid	0	2	0
% Euploid	0.0%	66.7%	0.0%
# Grade CA	1	10	5
# Euploid	1	5	1
% Euploid	100.0%	50.0%	20.0%
# Grade AC	1	2	0
# Euploid	1	1	0
% Euploid	0.0%	50.0%	0.0%
a,b Row values with different superscripts are different (p<0.05) Day 7 data were not statistically analyzed due to low sample sizes.