Fig. 4From: The global, regional and national burden of peptic ulcer disease from 1990 to 2019: a population-based studyTrends of age-standardized prevalence and death rates (per 100,000 population) in 21 GBD regions by SDI from 1990 to 2019. a Trends of age-standardized prevalence rates; b trends of age-standardized death rates by SDIBack to article page