Figure 2. Comparisons among hypertensive patients between China and the USA during 2011 to 2012. SBPL: severe blood pressure levels (≥160/100 mm Hg). Percentage (%) in columns means: 1) SBPL: blood pressure of ≥160/100 mm Hg among hypertensive people (prevalence of severe hypertension among all people/prevalence of hypertension among all people). 2) Awareness: a self-reported physician diagnosis of hypertension or self-reported use of antihypertensive medication, among hypertensive people. 3) Treatment: self-reported use of antihypertensive medication, among hypertensive people. 4) Control: a mean systolic blood pressure of ≤140 mm Hg, and a mean diastolic blood pressure of ≤90 mm Hg, among people with previously diagnosed hypertension. Adapted from a study using data from CHARLS (China Health and Retirement Longitudinal Study, n=12654) and the NHANES (US National Health and Nutrition Examination Survey, n=2607) from 2011 to 2012 .