Figure 2

Effect of CV of systolic HBP on change percentage of the MMSE score during the follow-up period. (a) Shown as mean values with s.d.s. (b) Shown as estimated marginal mean values with 95% confidence intervals resulting from the analysis of covariance model adjusted for age, sex, the baseline body mass index, the baseline official blood pressure, the baseline blood lipid and glucose, education, smoking, alcohol consumption and the baseline MMSE score. MMSE indicates Mini-Mental State Examination. *P<0.05, compared with the Low group; †P<0.05, compared with the middle group.