The IVF Outcome Counseling Based on the Model Combining DHEAS and Age in Patients with Low AMH Prior to the First Cycle of GnRH Antagonist Protocol of Ovarian Stimulation

Table 1

Baseline patient and treatment characteristics of studied IVF cycles resulting in clinical pregnancy and nonpregnancy.

Variable	Overall group	Nonpregnant	Pregnant	P value^a
	(𝑛=129)	(𝑛=114)	(𝑛=15)
Age (y)	37.0±3.7	37.3±3.7	35.0±3.6	0.043
BMI (kg/m^2)	23.9±3.8	24.0±3.9	23.5±2.0	0.976
AFC	6.6±3.7	6.4±3.6	8.1±4.3	0.134
AMH (pmol/L)	3.0±1.7	3.0±1.7	3.5±1.9	0.246
DHEAS (𝜇mol/L)	4.5±1.9	4.3±1.8	5.9±2.2	0.005
FSH (IU/L)	9.7±6.7	9.8±7.1	9.1±3.2	0.752
LH (IU/L)	4.6±2.2	4.7±2.3	4.5±1.6	0.755
𝐸2 (pmol/L)	223±123	223±123	224±102	0.823
𝑇 (nmol/L)	1.4±0.7	1.4±0.6	2.3±1.0	0.273
Duration of stimulation (d)	10.3±1.9	10.3±1.9	10.5±0.8	0.688
Total gonadotrophins used (IU)	3095.5±553.6	3089.5±582.4	3140±250.1	0.741
Number of ICSI cycles, % (𝑛/𝑁)	75.0 (81/108)	75.3 (70/93)	73.3 (11/15)	0.540

Note: values are presented as mean ± SD. AFC: antral follicle count; AMH: anti-Müllerian hormone; BMI: body mass index. Conversion formulas for the AMH, DHEAS, 𝐸₂, and 𝑇 values in mass units are as follows: ng/mL = pmol/L: 7.14, 𝜇g/dL × 0.027 = 𝜇mol/L, pg/mL × 3.67 = pmol/L, and ng/dL × 0.0347 = mmol/L.
apregnant versus nonpregnant.