Table 1. Sociodemographic characteristics (mean ± SD) of both groups.

	PMS	Controls
N	15	15
Age (years)	26±4	27±4
BMI (kg/m2)	23±4	24±4
Examined day of menstrual cycle for follicular phase	13±2	12±2
Examined day of menstrual cycle for luteal phase	27±3	27±2
Cycle length (days)	29±3	28±2

Note. BMI  =  Body Mass Index; PMS  =  Premenstrual Syndrome.

No significant differences in age, BMI, menstrual cycle length or days of menstrual cycle tested.