Fig. 1From: Onset age is a risk factor for refractory pediatric IgA vasculitis: a retrospective cohort studyDistribution of total corticosteroid (CS) cumulative dose and exposure duration among different onset age groups. Violin plots showing distribution of a total CS cumulative dose, b total CS exposure duration, and c high dose CS exposure duration in different onset age groups: ≤ 6 years old, 6–12 years old (> 6, ≤ 12), and 12–18 years old (> 12, < 18). *P < 0.05, and **P < 0.001Back to article page