Table 1.
Baseline demographics of patients undergoing natural and programmed FET cycles (n = 113)
| Natural (n = 65) | Programmed (n = 48) | P | |
|---|---|---|---|
| Age (years) | 37.6 ± 3.7 | 35.9 ± 4.5 | 0.031* |
| BMI (kg/m2) | 22.6 ± 7.4 | 23.0 ± 6.5 | 0.78 |
| AMH (ng/mL) | 2.4 ± 2.4 | 3.9 ± 4.2 | 0.046* |
| Gravidity | 2.2 ± 1.8 | 2.1 ± 1.9 | 0.73 |
| Parity | 0.4 ± 0.7 | 0.6 ± 0.9 | 0.17 |
| Prior miscarriages | 0.8 ± 1.1 | 1.1 ± 1.6 | 0.16 |
| PCOS | 1 (1.5%) | 8 (16.7%) | 0.004* |
| Prior uterine surgery | 31 (47.6%) | 22 (45.8%) | 0.85 |
| Asherman’s syndrome | 8 (12.3%) | 2 (4.2%) | 0.19 |
| Prior IVF cycles | 2 (1–3) | 2 (1–3) | 0.99 |
| Indication for biopsy of embryos | 0.91 | ||
| Single-gene disorder Recurrent pregnancy loss Age-related aneuploidy |
16 (24.6%) 8 (12.3%) 41 (63.1%) |
12 (25%) 5 (10.4%) 31 (64.6%) |
Data are presented as mean ± standard deviation and n (%) or median (interquartile range)
FET frozen embryo transfer, BMI body mass index, AMH anti-müllerian hormone, PCOS polycystic ovarian syndrome, IVF in vitro fertilization
*P < 0.05