Global burden of inflammatory bowel disease 1990-2019: A systematic examination of the disease burden and twenty-year forecast

Figure 4 Trends in inflammatory bowel disease age standardized rate by sociodemographic index from 1990-2019. A: Twenty-one Global Burden of Diseases regions are shown; B: 204 countries and territories are shown. The expected values for sociodemographic indices and disease incidence based on all sites are shown as black lines. ASR: Age standardized rate; SDI: Socio-demographic index.