Fig. 2From: Effectiveness of Echium amoenum on premenstrual syndrome: a randomized, double-blind, controlled trialGEE estimated measures of the intensity of PMS according to the Premenstrual Symptoms Screening Tool (PSST), Total score (a), 14 symptoms (b), and 5 interferences with daily activities (c) in the Echium amoenum (EA) and the Placebo groups at 2 follow-ups regarding the interaction between time and the studied group and also adjusting for age and BMI. Patterns of mean changes differ between the EA group and the Placebo groupBack to article page