Fig. 1

Changes of BMI percentile in JDM patients. T0 represented baseline date (before initiation of treatment), note data available for around 40% of the study subject. Other time point are T1 > 1.5 years, T2 = 1.51–3.49 years, and T3 = 3.5–5 years. The dotted line represents the 95th percentile; children with BMI above the 95th percentile meet the CDC definition of childhood obesity. Paired T-test showed a significant increase in the mean BMI percentile by 17.5 points (P = 0.004) after the initiation of medical treatment. BMI percentile decrease over the study period. Of note, * means P value between 0.05–0.01 and ** means P value between 0.01–0.001