Figure 5. Regional trends in sex- and age-standardized mortality for heart failure, 1983–2019. (A) Mortality trends in 6 metropolitan cities and 9 provinces from 1983 to 2019: mortality rates are directly sex- and age-standardized to the 2019 population (deaths per 100,000). (B) The ratio of mortality rates in other regions to Seoul (reference, light grey): blue indicates a lower rate than Seoul and red indicates a higher rate.