Background: To investigate the relationship between baseline systolic blood pressure (SBP) and visit-to-visit blood pressure variability in a general population. Methods: This is a prospective longitudinal cohort study on cardiovascular risk factors and cardiovascular or cerebrovascular events. Study participants attended a face-to-face interview every 2 years. Blood pressure variability was defined using the standard deviation and coefficient of variation of all SBP values at baseline and follow-up visits. The coefficient of variation is the ratio of the standard deviation to the mean SBP. We used multivariate linear regression models to test the relationships between SBP and standard deviation, and between SBP and coefficient of variation. Results: Approximately 43,360 participants (mean age: 48.2 +/- 11.5 years) were selected. In multivariate analysis, after adjustment for potential confounders, baseline SBPs < 120 mmHg were inversely related to standard deviation (P<0.001) and coefficient of variation (P<0.001). In contrast, baseline SBPs >= 140 mmHg were significantly positively associated with standard deviation (P<0.001) and coefficient of variation (P<0.001). Baseline SBPs of 120-140 mmHg were associated with the lowest standard deviation and coefficient of variation. The associations between baseline SBP and standard deviation, and between SBP and coefficient of variation during follow-ups showed a U curve. Conclusion: Both lower and higher baseline SBPs were associated with increased blood pressure variability. To control blood pressure variability, a good target SBP range for a general population might be 120-139 mmHg.
第一作者机构：[1]Capital Med Univ, Beijing Tiantan Hosp, Dept Neurol, 6 Tiantan Xili, Beijing 100050, Peoples R China;[2]China Natl Clin Res Ctr Neurol Dis, Beijing, Peoples R China;[3]Beijing Inst Brain Disorders, Ctr Stroke, Beijing, Peoples R China;[4]Beijing Key Lab Translat Med Cerebrovasc Dis, Beijing, Peoples R China;[5]Capital Med Univ, Sch Publ Hlth, Dept Epidemiol & Hlth Stat, Beijing, Peoples R China;
通讯作者：
通讯机构：[1]Capital Med Univ, Beijing Tiantan Hosp, Dept Neurol, 6 Tiantan Xili, Beijing 100050, Peoples R China;[2]China Natl Clin Res Ctr Neurol Dis, Beijing, Peoples R China;[3]Beijing Inst Brain Disorders, Ctr Stroke, Beijing, Peoples R China;[4]Beijing Key Lab Translat Med Cerebrovasc Dis, Beijing, Peoples R China;[7]North China Univ Sci & Technol, Kailuan Hosp, Dept Cardiol, 57 Xinhua Rd, Tangshan 063000, Peoples R China
推荐引用方式(GB/T 7714)：
Wang Anxin,Li Zhifang,Yang Yuling,et al.Impact of baseline systolic blood pressure on visit-to-visit blood pressure variability: the Kailuan study[J].Therapeutics and Clinical Risk Management.2016,12:1191-1196.doi:10.2147/TCRM.S112082.
APA：
Wang, Anxin,Li, Zhifang,Yang, Yuling,Chen, Guojuan,Wang, Chunxue...&Wu, Shouling.(2016).Impact of baseline systolic blood pressure on visit-to-visit blood pressure variability: the Kailuan study.Therapeutics and Clinical Risk Management,12,
MLA：
Wang, Anxin,et al."Impact of baseline systolic blood pressure on visit-to-visit blood pressure variability: the Kailuan study".Therapeutics and Clinical Risk Management 12.(2016):1191-1196
