Extended culture of cleavage embryo to blastocyst embryo is among the good predictors of successful outcome in vitrified-thawed ICSI cycles

Middle East Fertility Society Journal

Table 2 Rate of clinical pregnancy with different vitrified-thawed cycle parameters

Variable^a	Rate of pregnancy n (%)	Odds ratio (95% CI)	P value
Embryo vitrification stage
CSE	198/502 (39.44%)	2.1 (1.6–2.8)	0.001^$
BSE	100/536 (18.66%)	2.1 (1.6–2.8)	0.001^$
Embryo quality
Top Q ET	216/684 (31.5%)	63.31 (3.899–1028)	0.0001^$
Non-top Q ET	0/68 (0%)	63.31 (3.899–1028)	0.0001^$
Endometrial preparation
Natural	70/240 (29.1%)		0.09^$$
Stimulated	204/680 (30.0%)
Replacement	17/90 (18.8%)
Culture use
CSE to BSE		a: a = 5.44 (3.89–7.60) b: b = 5.8 (4.1–8.1) c: c = 4.7 (3.1–7.0)	0.0001^$
a- Clinical PR	116/194 (59.7%)
b- Chemical PR	125/194 (64.1%)
c- Ongoing PR	(87/165) (52.7%)
Non-Culture
a- Clinical PR	182/848 (21.4%)
b- Chemical PR	201/848 (23.7%)
c- Ongoing PR	80/450 (17.7%)
Ovulation Triggering by HCG
Yes	212/610 (34.7%)	2.45 (1.78–3.34)	0.0001^$
No	66/370 (17.8%)	2.45 (1.78–3.34)	0.0001^$