Table 1.
Baseline characteristics and clinical history of ovarian stimulation cycle
|
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|---|---|---|---|---|
| Variables | Thawed cleavage-stage group (n=110) | Post-thaw extended culture blastocysts group (n=110) | P value | |
|
| ||||
| Age (Y) | 29.96 ± 4.09 | 29.99 ± 4.09 | 0.961 | |
| Body mass index (kg/m2) | 25.28 ± 3.83 | 25.45 ± 4.08 | 0.755 | |
| Infertility duration (Y) | 6.41 ± 3.78 | 6.19 ± 3.45 | 0.648 | |
| Cause of infertility | ||||
| Ovulatory | 12 (10.91) | 17 (15.45) | 0.397 | |
| Tuboperitoneal | 7 (6.36) | 5 (4.55) | ||
| Unexplained | 16 (14.55) | 23 (20.91) | ||
| Male | 67 (60.91) | 61 (55.45) | ||
| >1 factor | 8 (7.27) | 4 (3.64) | ||
| No. of previous IVF/ICSI cycles | 1.80 ± 0.96 | 1.96 ± 0.86 | 0.210 | |
| History of fresh embryo transfer | ||||
| Yes | 36 (32.73) | 27 (24.55) | 0.180 | |
| No (freeze-all strategy) | 74 (67.27) | 83 (75.45) | ||
| No. of retrieved oocytes | 15.15 ± 5.97 | 16.02 ± 5.88 | 0.281 | |
| No. of MII oocytes | 11.67 ± 0.48 | 12.55 ± 0.47 | 0.197 | |
| Fertilisation rate | 1015/1540 (65.9) | 1065/1616 (65.9) | 0.997 | |
| No. of embryos | 9.84 ± 3.67 | 10.28 ± 3.85 | 0.381 | |
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Data are written as mean ± SD or n (%). P value was obtained by the independent sample t test and chi square test. Statistically significant level was 0.05. IVF; In vitro fertilization and ICSI; Intracytoplasmic sperm injection.