From: Follicular phase length has no influence on frozen-thawed embryo transfers in natural cycles
Parameters | Prolonged FPL group (n = 127) | Normal FPL group (n = 737) | p value |
---|---|---|---|
Age (years) | 32.1 ± 4.22 (22–40) | 32.7 ± 4.03 (22–40) | 0.087 |
BMI (kg/m2) | 21.8 ± 3.23 (15.3–31.9) | 21.7 ± 2.84 (15.5–31.5) | 0.774 |
Infertility type | 0.659 | ||
Primary | 59 (46.5%) | 358 (48.6%) | |
Secondary | 68 (53.5%) | 379 (51.4%) | |
Infertility duration (years) | 4.9 ± 3.1 (1–17) | 4.7 ± 3.2 (1–18) | 0.445 |
Infertility factor | 0.223 | ||
Tubal factor | 70 (55.1%) | 366 (49.7%) | |
Male factor | 14 (11.0%) | 126 (17.1%) | |
Mixed male and female factor | 31 (24.4%) | 155 (21.0%) | |
Unexplained | 12 (9.5%) | 90 (12.2%) | |
Gravidity | 0.98 ± 1.04 (0–4) | 0.95 ± 1.09 (0–6) | 0.636 |
Parity | 0.34 ± 0.51 (0–2) | 0.29 ± 0.49 (0–2) | 0.314 |
No. of previous failed cycles | 0.91 ± 0.82 (0–3) | 0.97 ± 0.87 (0–3) | 0.552 |
Fertilization method | 0.696 | ||
IVF | 113 (89.0%) | 636 (86.3%) | |
ICSI | 12 (9.4%) | 84 (11.4%) | |
IVF + ICSI | 2 (1.6%) | 17 (2.3%) | |
Menstrual cycle length | 29.0 ± 2.85 (23–38) | 28.7 ± 2.71 (21–36) | 0.250 |