Table 2 Comparison of Demographics between those patients with single blastocyst transfer and double blastocyst transfer
SBT (n = 585) | DBT (n = 699) | P-value | |
|---|---|---|---|
Variables | |||
Age (years), n (%) | |||
35–37 | 355 (60.7) | 458 (65.5) | 0.073 |
38–42 | 230 (39.3) | 241 (34.5) | |
BMI (kg/m2), n (%) | 0.702 | ||
< 18.5 | 34 (5.8) | 35 (5.0) | |
18.5–24.9 | 420 (71.8) | 515 (73.7) | |
≥ 25 | 131 (22.4) | 149 (21.3) | |
Cause of infertility, n (%) | 0.240 | ||
Female infertility | 334 (57.1) | 393 (56.2) | |
Male infertility | 50 (8.5) | 45 (6.4) | |
Mixed infertility | 123 (21.0) | 174 (24.9) | |
Unknown infertility | 78 (13.3) | 87 (12.4) | |
Type of infertility, n (%) | < 0.001 | ||
Primary | 116 (19.8) | 227 32.5) | |
Secondary | 469 (80.2) | 472 (67.5) | |
Duration of infertility (years) | 6.00 (6.00–6.00) | 6.00 (6.00–6.00) | 0.082 |
Basal FSH (mUI/ml) | 7.58 (6.38–8.88) | 7.43 (6.36–8.67) | 0.197 |
Basal LH (mUI/ml) | 4.00 (3.06–5.39) | 4.23 (3.13–5.61) | 0.084 |
Basal E2 (pg/ml) | 44.00 (28.19-54.00) | 40.00 (28.00–57.00) | 0.405 |
Cycle rank | 0.774 | ||
1 | 426 (72.8) | 514 (73.5) | |
2 | 159 (27.2) | 185 (26.5) | |
N of good-quality blastocyst, n (%) | 0.078 | ||
0 | 194 (32.2) | 200 (28.6) | |
1 or 2 | 391 (66.8) | 499 (71.4) | |
Endometrial thickness (mm) | 9.00 (8.00–10.00) | 9.00 (8.00-10.50) | 0.522 |
Endometrium preparation, n (%) | 0.564 | ||
NC | 93 (15.9) | 103 (14.7) | |
AC | 492 (84.1) | 596 (85.3) |