Table 1.

Baseline characteristics of study population

	Amenorrhea/Oligomenorrhea group (n = 71)	Eumenorrhea group (n = 717)
BMI < 20	23 (32.9)	245 (34.9)
BMI 20–25	36 (51.4)	398 (56.7)
BMI > 25	11 (15.7)	59 (8.4)
Sport intensity, mean (SD) (hours/week)	14.35 (11.44)	12.64 (10.59)
Level of education
High School undergraduate	16 (22.5)	161 (22.8)
High School graduate	26 (36.6)	242 (34.2)
Bachelors degree	29 (40.8)	304 (43.0)
Types of sport
Other sports (reference)	36 (50.7)	438 (61.1)
subject scored	-	29 (4.0)
endurance sports	9 (12.7)	38 (5.3)
body contour	2(2.8)	31 (4.3)
weight categories	24 (33.8)	181 (25.2)
History of Drug intake
OCPs	51 (71.8)	654 (91.2)
Diuretics & weight-reducing drugs	1 (1.4)	16 (2.2)
Thyroid hormones	-	15 (2.1)