Fig. 2From: The role of lifestyle factors in the association between education and self-reported fibromyalgia: a mediation analysisConceptual model of the role of lifestyle factors in the relationship between years of education and self-reported fibromyalgia. BMI: Body Mass Index. PA: Physical Activity. Dashed lines (---): indirect effect; Solid line (̶): direct effect. Bidirected dotted lines indicate that the mediators may be correlated. For clarity, all arrows between covariates and each lifestyle factors are not shownBack to article page