Fig. 3

a STL results for total cases, BMI subgroups, and 10–19- and 20–29-year age groups. Note: The horizontal axis indicates time. The vertical axis indicates data, seasonal components, trend components, and residuals. BMI Body mass index, STL Seasonal Decomposition of Time Series by Loess. b STL results for individuals, families, clinical cases in treatment, and subclinical cases. Note: The horizontal axis indicates time. The vertical axis indicates data, seasonal components, trend components, and residuals. STL Seasonal Decomposition of Time Series by Loess