Table 1. Distribution of patients according to LUF and Non-LUF groups comparison (confounding variables). HC-UFG / Mater Clinic, Goiania 2000-2014.
General features	LUF (n=74)	Non-LUF (n=228)	P
Age	31.54±4.71	31.85±4.21	0.32
BMI	24.83±3.85	23.88±3.93	0.07
LH	4.56±6.51	4.61±2.74	0.06
FSH	6.26±1.45	5.98±1.68	0.07
TSH	2.50±0.93	2.16±1.19	0.75
Estradiol (E2)	51.84±35.82	54.34±51.09	0.12
Infertility duration	67.61±47.81	64.17±46.95	0.28
BMI (Body Mass Index); LH (luteinizing hormone) FSH (Follicle Stimulating Hormone); TSH (thyroid-stimulating hormone)