Table 1 Baseline characteristics of the patients with and without live birth
Live birth (n = 574) | Non-live birth (n = 710) | P-value | |
|---|---|---|---|
Variables | |||
Age (years), n (%) | |||
35–37 | 410 (71.4) | 403 (56.8) | < 0.001 |
38–42 | 164 (28.6) | 307 (43.2) | |
BMI (kg/m2), n (%) | 0.309 | ||
< 18.5 | 25 (4.4) | 44 (6.2) | |
18.5–24.9 | 426 (74.2) | 509 (71.7) | |
≥ 25 | 123 (21.4) | 157 (22.1) | |
Cause of infertility, n (%) | 0.173 | ||
Female infertility | 343 (59.8) | 384 (54.1) | |
Male infertility | 37 (6.4) | 58 (8.2) | |
Mixed infertility | 121 (21.1) | 176 (24.8) | |
Unknown infertility | 73 (12.7) | 92 (13.0) | |
Type of infertility, n (%) | 0.472 | ||
Primary | 159 (27.7) | 184 (25.9) | |
Secondary | 415 (72.3) | 526 (74.1) | |
Duration of infertility (years) | 6.00 (6.00–6.00) | 6.00 (6.00–6.00) | 0.217 |
Basal FSH (mUI/ml) | 7.38 (6.27–8.52) | 7.59 (6.44–8.95) | 0.012 |
Basal LH (mUI/ml) | 4.16 (3.19–5.52) | 4.06 (3.00-5.50) | 0.262 |
Basal E2 (pg/ml) | 41.00 (28.00–57.00) | 39.00 (28.00–54.00) | 0.322 |
FET cycles rank | 0.017 | ||
1st cycle | 439 (76.5) | 501 (70.6) | |
2nd cycle | 135 (23.5) | 209 (29.4) | |
N of blastocyst transferred, n (%) | < 0.001 | ||
1 | 223 (38.9) | 362 (51.0) | |
2 | 351 (61.1) | 348 (49.0) | |
N of good-quality blastocyst, n (%) | < 0.001 | ||
0 | 112 (19.5) | 282 (39.7) | |
1 or 2 | 462 (80.5) | 428 (60.3) | |
Endometrial thickness (mm) | 9.00 (8.00-10.50) | 9.00 (8.00–10.00) | 0.048 |
Endometrium preparation, n (%) | 0.829 | ||
NC | 89 (15.5) | 107 (15.1) | |
AC | 485 (84.5) | 603 (84.9) |