Untreated Isolated Sytolic Hypertension among Middle-Aged and Old Adults in the United States: Trends in the Prevalence by Demographic Factors During 1999–2010

Figure 1

Prevalence and 95% confidence intervals of isolated systolic hypertension by survey cycles in NHANES 1999–2010, USA. (The prevalence of isolated systolic hypertension was age-adjusted by direct standardization to the 2000 projected US population. NHANES, National Health and Nutrition Examination Survey; ISH, isolated systolic hypertension. indicates the significant difference in the prevalence of ISH between 1999–2004 and 2005–2010).