Table 2.

Characteristics of the IVF cycles in women who did and did not achieve clinical pregnancy.

Characteristics	Successfull conception N = 81	Failed conception N = 182	p
Total dose of gonadotropins (IU)	1800 [1500–2225]	1800 [1475–2250]	0.67
Duration of stimulation (days)	9 [8–10]	8 [7–10]	0.04
Number of follicles ≥ 15 mm	7 [5–11]	5 [3–7]	< 0.001
Number of oocytes retrieved	7 [4–11]	5 [2–7]	< 0.001
Number of mature oocytes	6 [4–8]	4 [2–6]	< 0.001
Number of embryos	4 [3–6]	2 [1–4]	< 0.001
Number of embryo transfers			< 0.001
0	0 (0%)	43 (24%)
1	55 (68%)	99 (54%)
2	21 (26%)	31 (17%)
≥ 3	5 (6%)	9 (5%)

Data is reported as Median [IQR] or Number (%) as appropriate.

BMI body mass index, FSH follicle stimulating hormone, AMH anti-mullerian hormone, IVF in vitro fertilization, PID pelvic inflammatory disease.