Table 1.

Demographic characteristics of participants.

Parameters	Mean (SD)	Levels	Counts
Age
Control group	31.38 ± 5.62*	≤25	17 (15.2%)
		26–34	63 (56.2%)
		Above 35	32 (28.6%)
Infertility group	30.67 ± 4.48*	≤25	10 (9.1%)
		26–34	80 (72.7%)
		Above 35	20 (18.2%)
Cortisol (μg/dL)
Control group	14.38 ± 4.84
Infertility group	18.39 ± 7.79*
AFC	12.03 ± 5.26*
AMH (ng/ml)	3.65 ± 2.51*
FSH (mIU/mL)	7.81 ± 2.18
SAS Score	38.45 ± 22.32*	0-49	64 (58.1%)
		50-59	17 (15.5%)
		60-69	19 (17.3%)
		Above 70	10 (9.1%)
BMI	21.51 ± 2.04*	<18.5	6 (5.5%)
		18.5–24.0	89 (80.9%)
		>24.0	15 (13.6%)
Years of infertility	3.74 ± 2.12*	1 Y	13 (11.8%)
		2–4 Y	64 (58.2%)
		Above 5 Y	33 (30.0%)
Monthly income (CNY)		Below 2000	17 (15.4%)
		2000–5000	51(46.4%)
		Above 5000	42 (38.2%)
Education level		Middle school/below	22 (20.0%)
		High school	41 (37.3%)
		Bachelor/above	47 (42.7%)

*Test for normal distribution, p < 0.05 (two-tailed).