Table 1. Sociodemographic characteristics and basal hormonal levels of the patients compared in between the groups.

Variables	EFS (n=6)	Non-EFS (n=409)	p
Age (years)	30.8±3.8	29.9±3.7	0.55
Infertility duration (years)	37.7±23.6	40.9±10.1	0.45
BMI	26.4±4.9	26.3±3.5	0.97
FSH (IU/mL)	7.5±1.2	7.4±1.3	0.94
LH (IU/mL)	6.5±0.9	8.7±2.2	0.02*
AMH (ng/mL)	3.38±0.68	4.01±0.72	0.04*

EFS: Empty follicle syndrome, BMI: Body mass index, LH: Luteinizing hormone, FSH: Follicle stimulating hormone, AMH: Anti-Müllerian hormone