Table 4 Clinical outcome in cohort B: hCG administration on day 5
Transfer with top blastocysts | Transfer with non-top blastocysts | |||||
|---|---|---|---|---|---|---|
Characteristics | hCG (n = 169) | culture medium (n = 188) | P-Value | hCG (n = 341) | culture medium (n = 306) | P-Value |
Female age (years) mean ± s.d. (range) | 36.1 ± 4.0 (22–43) | 35.7 ± 4.3 (20–43) | 0.331 | 37.6 ± 3.9 (27–43) | 37.3 ± 4.2 (25–43) | 0.330 |
Endometrium height (mm) mean ± s.d. | 10.2 ± 1.5 | 9.9 ± 1.6 | 0.102 | 9.8 ± 1.7 | 9.7 ± 1.6 | 0.619 |
No. Embryos transferred Embryos / ET mean ± s.d. | 274 1.6 ± 0.5 | 302 1.6 ± 0.5 | 0.781 | 594 1.7 ± 0.5 | 547 1.8 ± 0.4 | 0.208 |
Proportion of difficult ETs | 10.7 % | 9.0 % | 0.610 | 10.6 % | 10.8 % | 0.926 |
No. Pregnancies (PR) | 114 (67.5 %) | 112 (59.6 %) | 0.123 | 147 (43.1 %) | 149 (48.7 %) | 0.155 |
No. Clinical pregnancies (cPR) | 100 (59.2 %) | 103 (54.8 %) | 0.404 | 113 (33.1 %) | 125 (40.8 %) | 0.042 |
No. Implanted embryos (IR) | 123 (44.9 %) | 128 (42.4 %) | 0.545 | 130 (21.9 %) | 148 (27.1 %) | 0.042 |
No. Births (LBR) | 90 (53.3 %) | 91 (48.4 %) | 0.360 | 98 (28.7 %) | 107 (35.0 %) | 0.089 |
No. Babies born | 108 | 112 | 110 | 126 | ||
No. Miscarriages (MR) | 10 (5.9 %) | 12 (6.4 %) | 0.855 | 15 (4.4 %) | 18 (5.9 %) | 0.392 |