Derived by Cox proportional hazards regression with 24-hour and nighttime systolic
blood pressure (BP) analyzed as continuous variables. Estimates of 10-year risk were
standardized to the average of the distributions in the whole study population (mean
or ratio) of all covariables. Numbers in the panel A grid represent the percentage
of participants within each systolic BP cross-classification category; numbers in
the other grids represent the 10-year risk.
See the Results section for P values along horizontal and vertical
axes. Risks of total mortality, cardiovascular mortality, and a coronary event were
not significantly associated with 24-hour systolic BP
(P ≥ .06).