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Table 1 Patient characteristics

From: Predictive factors for oocyte retrieval failure in controlled ovarian hyperstimulation protocols: a retrospective observational cohort study

No. of cycles, n 744
No. of patients, n 361
Age, years 37 (23–46)a
Gravida per patient, n 0 (0–7)a
Parity per patient, n 0 (0–4)a
BMI, kg/m2 21 (16–36)a
Infertility period, years 6 (0–18)a
Previous treatment cycles, n 2 (1–16)a
Cycles with GnRH agonist long/all cycles (%) 509/744 (68.4)
Cycles with GnRH antagonist/all cycles (%) 235/744 (31.6)
Duration of hMG/rFSH, days 11 (7–21)a
Dose of hMG/rFSH, IU 1425 (150–4800)a
Hormone levelsb  
 FSH, mIU/ml 13.5 (3.2–113.5)a
 LH, mIU/ml 2.4 (0.1–45.3)a
 PRL, ng/ml 30.4 (0.6–314)a
 Estradiol, pg/ml 1633 (62–15,768)a
 Progesterone, ng/ml 0.75 (0.05–10.9)a
Endometrial thicknessb, mm 10.9 (4.6–21.2)a
No. of follicles over 15.5 mmb, n 4 (1–16)a
  1. aMedian (range). bValues on the day of hCG injection. BMI: body mass index; GnRH: gonadotropin-releasing hormone; hMG: human menopausal gonadotropin; rFSH: recombinant follicle stimulating hormone; IU: international unit; LH: luteinizing hormone; PRL: prolactin; hCG: human chorionic gonadotropin