Table 2  Comparison of age, total dose of FSH, and follicular fluid factors in patients according to the number of retrieved oocytes.

Parameters	Non-responders No. of oocytes = 0 (n = 14)	Poor-responders No. of oocytes = 1 – 5 (n = 18)	Normo-responders No. of oocytes = 6 – 10 (n = 30)	High-responders No. of oocytes > 10 (n = 28)
FSH: follicle-stimulating hormone; ADM2: adrenomedullin 2; VEGF: vascular endothelial growth factor; sFlt-1: soluble Fms-like tyrosine kinase-1; sVEGFR-2: soluble VEGF receptor 2 Significant differences (p < 0.05) compared with a non-responders, b poor-responders.
Age (years)	29 ± 8.64	34.07 ± 6.87	31.16 ± 4.44	30.28 ± 4.613
Total dose of FSH (IU)	1884.50 ± 1067.87	2270.31 ± 715.78	2055.06 ± 613.52	2040.35 ± 574.37
ADM2 (pg/ml)	282.60 ± 217.34	41.69 ± 9.68 a	45.38 ± 10.75 a	46.25 ± 7.65 a
VEGF (pg/ml)	1452.25 ± 580.74	1066.6 ± 218.02 a	1363.1 ± 700.76	1228.9 ± 421.06
sFlt-1 (ng/ml)	473.93 ± 426.19	536.87 ± 211.82	364.01 ± 258.04 b	375.11 ± 230.02 b
sVEGFR-2 (ng/ml)	8.38 ± 5.7	4.24 ± 1.82 a	4.66 ± 3.13	5.38 ± 3.83
VEGF/sFlt-1	2.98 ± 1.82	1.98 ± 0.94	3.38 ± 2.27	3.33 ± 2.01
VEGF/sVEGFR-2	204.72 ± 68.51	265.29 ± 55.97	322.10 ± 188.13 a	266.4 ± 67.21