Demographic characteristics of whole study population and groups above and below the median of blood pressure variability.

Values are expressed as mean ± SD or n (%). ACE-I - Angiotensin Converting Enzyme Inhibitor; ARB - Angiotensin receptor blocker; CCB –Calcium channel blocker, Other – Alpha-blocker, Nitrate, Diuretic, Aldosterone antagonist.*Mann-Whitney U tests and chi-squared tests were used to compute p-values for continuous and categorical variables respectively.

数据以均值±标准差（mean ± SD）或例数（百分比）的形式呈现。血管紧张素转换酶抑制剂（Angiotensin Converting Enzyme Inhibitor，ACE-I）、血管紧张素受体拮抗剂（Angiotensin receptor blocker，ARB）与钙通道阻滞剂（Calcium channel blocker，CCB），其余药物包括α受体阻滞剂、硝酸酯类、利尿剂及醛固酮拮抗剂。*采用曼-惠特尼U检验与卡方检验，分别计算连续变量和分类变量的p值。