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. 2017 Oct 18;35(2):311–319. doi: 10.1007/s10815-017-1063-7

Table 6.

Prognostic factors of live birth after univariate analysis

	Live birth (n = 67)	No live birth (n = 200)	p
Female age
≤ 35 years old (n = 133)	42 (31.6%)	91 (68.4%)	0.015*
> 35 years old (n = 134)	25 (18.7%)	109 (81.3%)	0.015*
Blastocyst expansion time
Day 5	55 (28.9%)	135 (71.1%)	0.023*
Day 6	12 (15.6%)	65 (84.4%)	0.023*
ICM^a
Grade A	20 (29.4%)	48 (70.6%)	0.631
Grade B	39 (23.8%)	125 (76.2%)
Grade C	8 (22.8%)	27 (77.1%)
TE^a
Grade A	25 (30.5%)	57 (69.5%)	0.282
Grade B	37 (23.9%)	118 (76.1%)
Grade C	5 (16.7%)	25 (83.3%)

*Significant difference (p < 0.05)

^aAccording to Gardner and Schoolcraft blastocyst classification