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. 2015 Jul 4;13:70. doi: 10.1186/s12958-015-0069-1

Table 3.

Clinical outcome in cohort A: hCG administration on day 3

Transfer with top blastocysts Transfer with non-top blastocysts
Characteristics hCG (n = 48) culture medium (n = 49) P-Value hCG (n = 41) culture medium (n = 44) P-Value
Female age (years) mean ± s.d. (range) 35.3 ± 4.2 (22–42) 34.9 ± 5.0 (25–42) 0.641 37.0 ± 3.9 (30–43) 36.1 ± 5.0 (25–43) 0.380
Endometrium height (mm) mean ± s.d. 11.0  ± 2.6 10.8  ± 2.4 0.817 11.6  ± 2.2 10.8  ± 1.9 0.110
No. Embryos transferred Embryos / ET mean ± s.d. 75 1.6 ± 0.5 76 1.6 ± 0.5 0.911 69 1.7 ± 0.5 77 1.8 ± 0.5 0.522
Proportion of difficult ETs 10.4 % 8.2 % 0.702 12.2 % 9.1 % 0.642
No. Pregnancies (PR) 29 (60.4 %) 32 (65.3 %) 0.618 13 (31.7 %) 13 (29.5 %) 0.829
No. Clinical pregnancies (cPR) 25 (52.1 %) 28 (57.1 %) 0.617 8 (19.5 %) 9 (20.5 %) 0.914
No. Implanted embryos (IR) 30 (40.0 %) 32 (42.1 %) 0.793 11 (15.9 %) 12 (15.6 %) 0.953
No. Births (LBR) 24 (50.0 %) 26 (53.1 %) 0.763 7 (17.1 %) 8 (18.2 %) 0.893
No. Babies born 27 30 9 9
No. Miscarriages (MR) 1 (2.1 %) 2 (4.1 %) 0.570 1 (2.4 %) 1 (2.3 %) 0.960

Ranges or percentages respectively are given in brackets, s.d.: standard deviation

IVF characteristics and clinical outcome of cohort A. Miscarriage rate was defined as pregnancy loss after the detection of foetal heartbeat