simplified classification of hyperten- sion severity for adults aged 18 years and older (Table 23). The classification is based on the average of two or more properly measured seated blood pressure readings on each of two or more office visits. When SBP and DBP fall into differ- ent categories, the higher category should be selected to classify the individual. Accurate mea- surement in CKD is especially important, be- cause hypertension is more common in CKD, and because JNC 7 identifies CKD as a “compel- ling indication” for more aggressive antihyperten- sive therapy because of the higher risk of CVD in CKD than in the general population.