Figure 2. Kaplan-Meier survival function estimates by five categories of conventional blood pressure in 5,008 participants.
(A) indicates risk for total mortality, and (B–D) indicate risks for cardiovascular events, stroke, and cardiac events, respectively. CBP categories were optimal (<120/<80 mm Hg), normal (120–129/80–84 mm Hg), high-normal (130–139/85–89 mm Hg), mild hypertension (140–159/90–99 mm Hg), and severe hypertension (≥160/≥100 mm Hg). When the systolic and diastolic blood pressures were in different categories, the participant was assigned to the higher category. The significance of the log-rank test for difference across the five categories was significant (p<0.0001) for all of the end points.