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

Table 5.

Prognostic factors of clinical pregnancy after univariate analysis

Clinical pregnancy
(n = 109)
No clinical pregnancy
(n = 158)
p value
Female age
 ≤ 35 years old (n = 133) 63 (47.4%) 70 (52.6%) 0.03*
 > 35 years old (n = 134) 46 (34.3%) 88 (65.7%)
Blastocyst expansion time
 Day 5 (n = 190) 87 (45.8%) 103 (54.2%) 0.01*
 Day 6 (n = 77) 22 (28.6%) 55 (71.4%)
ICMa
 Grade A (n = 68) 31 (45.6%) 37 (54.4%) 0.527
 Grade B (n = 164) 66 (40.2%) 98 (59.7%)
 Grade C (n = 35) 12 (34.3%) 23 (65.7%)
TEa
 Grade A (n = 82) 39 (47.6%) 43 (52.4%) 0.069
 Grade B (n = 155) 63 (40.6%) 92 (59.3%)
 Grade C (n = 30) 7 (23.3%) 23 (76.7%)

*Significant difference (p < 0.05)

aAccording to Gardner and Schoolcraft blastocyst classification