Zhou B, Danaei G, Stevens GA, et al. - Data from 526,336 individuals aged 40–79 years who participated in 123 national health examination surveys from 1976 to 2017 in 12 high-income countries were assessed by the researchers to compare hypertension awareness, treatment, and control, and determine how they have evolved over time. In their most current surveys, the lowest prevalence of hypertension was observed in Canada, South Korea, Australia, and the United Kingdom; the highest was observed in Finland. In the 1980s and early 1990s, treatment rates and control rates were, at most, 40% and less than 25%, respectively, in most countries and age and gender groups. With South Korea and Germany experiencing the greatest improvements, hypertension awareness and treatment rose, and the control rate improved in all 12 countries over the time period evaluated. In the 1990s and early-mid 2000s, most of the noted increase occurred, which peaked since in most countries. The greatest rates of awareness, treatment, and control in their most current surveys was observed in Canada, Germany, South Korea, and the United States; the lowest were observed in Finland, Ireland, Japan, and Spain. Even in the best performing countries, treatment coverage and control rates was, at most, 80% and less than 70%, respectively. Thus, in high-income countries since the 1980s and 1990s, hypertension awareness, treatment, and control have improved substantially. Nonetheless, control rates have peaked in the past decade, at levels lower than those in high-quality hypertension programs. Overall, with respect to the rates of hypertension awareness, treatment, and control, there are substantial difference across countries.