Table 4.
Clinical reproductive outcomes
| Variable | Study group (n = 76) | Control group (n = 93) | p-value |
|---|---|---|---|
| Number of fresh ET cyclesa, n (%) | 66/76 (86.84) | 64/93 (68.82) | 0.35 |
| Patients who had oocyte retrieval but no ET b, n (%) | 6/72 (8.33) | 19/83 (22.89) | 0.04 |
| Number of FET cycles, n (%) | 12/76 (15.79) | 3/93 (3.23) | 0.01 |
| Patients with cryopreserved embryos, n (%) | 14/76 (18.42)c | 4/93 (4.30)d | 0.012 |
| Number of embryos per ETe, median (IQR) | 2 (1,2) | 1 (1,2) | 0.04 |
| Clinical pregnancy rate per fresh ETf, n (%) | 23/66 (34.85) | 16/64 (25.00) | 0.24 |
| Cumulative clinical pregnancy rateg, n (%) | 24/76 (31.58) | 16/93 (17.20) | 0.11 |
| Multiple pregnancy, n (%) | 4/76 (5.26) | 3/93 (3.23) | 0.70 |
| Spontaneous miscarriage, n (%) | 2/23 (8.67) | 2/16 (12.50) | 0.73 |
| Live birth rate per fresh ETf, n (%) | 21/66 (31.82) | 14/64 (21.88) | 0.33 |
| Cumulative live birth rateg, n (%) | 22/76 (28.95) | 14/93 (15.54) | 0.08 |
aAll patients with available embryos had fresh ET
bIncluded women who had hCG andoocyte retrieval but did not have oocytes or useable embryos
cEmbryos for 2women from this group did not survive the thawing (2/14, 14.29%)
dEmbryos for 1 woman from this group did not survive the thawing (1/4, 25%)
eAll the transferred embryos were day-3 cleavage stage embryos
fCalculated as follows: the number of clinical pregnancies/ live births originated from fresh ET divided by the number of women with transferred embryos
gCalculated as follows: the number of clinical pregnancies/ live births originated from one completed ART cycle including fresh and frozen-thaw ETs divided by the number of women treated
ET – embryo transfer; FET – frozen-thaw embryo transfer; IQR – interquartile range