Table 1. Parameters and ovarian stimulation outcomes according to AMH levels.
Parameter	Group 1 AMH ≤ 0.30	Group 2 > 0.30 AMH ≤ 0.70	Group 3 > 0.70 AMH ≤ 1.0	Group 4 > 1.0 AMH < 3.0	Group 5 AMH ≥ 3.0	P-value
Started cycles (287 total)	64	76	32	86	29
BMI (kg/m2)	22.95 ± 2.77	23.95 ± 3.84	23.79 ± 3.41	23.23 ± 3.71	24.08 ± 3.97	NS
Age	37.83 ± 4.11a	38.61 ± 3.67b	38.15 ± 3.04c	37.23 ± 3.64	35.48 ± 3.97abc	abc<0.05
Serum FSH	12.45 ± 8.24abcd	8.95 ± 5.54a	7.99 ± 3.86b	7.40 ± 3.11c	6.81 ± 2.11d	ab<0.01 cd<0.001
AFC	6.75 ± 3.47ab	9.11 ± 4.93cde	9.53 ± 3.74f	12.60 ± 5.24acg	17.58 ± 7.64bdefg	abcefg<0.001
Stimulation days	9.59 ± 1.73	9.41 ± 1.74	10.03 ± 1.53	9.24 ± 1.50	8.93 ± 1.10	NS
FSH administered (IU)	1673.66 ± 538.88	1744.57 ± 707.02	1805.64 ± 562.79	1725.72 ± 623.76	1620.27 ± 559.93	NS
Fol. ≥ 15 mm on hCG day	3.64 ± 2.26abc	5.36 ± 3.64de	6.34 ± 3.98adf	7.37 ± 3.60beg	11.13 ± 4.22cfg	bcefg<0.001 ad0.01
No. of oocytes retrieved	3.27 ± 3.14abc	6.23 ± 6.85ade	5.87 ± 3.89fg	9.25 ± 5.10bdfh	16.96 ± 7.21cegh	af<0.05 d<0.01 bcegh<0.001
No. of metaphase II oocytes	1.89 ± 2.15abc	4.34 ± 5.96ad	4.09 ± 3.12e	6.30 ± 4.40bf	11.44 ± 6.35cdef	a<0.05 bcdef<0.001
Data are presented as mean values (± standard deviation); AMH: Anti-Müllerian hormone (ng/mL); FSH: Follicle Stimulating hormone; AFC: Antral Follicle Count; BMI: Body Mass Index; hCG: human Chorionic Gonadotropin.