Table 1.
Comparison of baseline characteristics of study cohort (n = 343)
| Parameter | >4 Cells at ET (n = 165) | 4 Cells at ET (n = 178) | P |
|---|---|---|---|
| Age (years) | 38.2 (±4.63) | 38.9 (±4.29) | 0.15 |
| Gravidity | 1.36 (±0.69) | 1.30 (±0.41) | 0.32 |
| Parity | 0.49 (±0.29) | 0.45 (±0.27) | 0.19 |
| BMI (kg/m2) | 22.9 (±6.36) | 22.3 (±6.46) | 0.39 |
| Previous IVF attempts | 2.61 (±1.16) | 2.63 (±1.32) | 0.88 |
| Basal FSH level (mIU/mL) | 5.21 (±3.61) | 5.19 (±3.68) | 0.96 |
| Total stimulation days | 10.3 (±2.18) | 10.6 (±2.48) | 0.24 |
| Total gonadotropins administered (IU) | 4554.1 (±2060.8) | 4730.8 (±2146.1) | 0.44 |
| Peak endometrial stripe (mm) | 11.6 (±6.57) | 11.2 (±2.29) | 0.45 |
| E2 level on day of hCG trigger (pg/mL) | 1375.3 (±764.8) | 1249.4 (±626.4) | 0.09 |
| Total oocytes retrieved | 7 (IQR 5–10) | 5 (IQR 3–7) | <0.001 |
| Total mature oocytes | 5 (IQR 3–6) | 3 (IQR 2–5) | <0.001 |
| ICSI utilized | 132 (80 %) | 153 (86 %) | 0.26 |
Data are presented as mean ± standard deviation, median [interquartile range (IQR)], and n (%)
BMI Body Mass Index, IVF In Vitro Fertilization, E 2 Estradiol, FSH Follicle Stimulating Hormone, hCG Human Chorionic Gonadotropin, ICSI Intracytoplasmic Sperm Injection