Abstract: Objective　To investigate the associated factors for blood pressure variability（BPV） in a community-dwelling hypertensive population in Ningxia.Methods　From January 2015 to January 2017，605 patients with hypertension were selected from a community in Yinchuan City．The data regarding sex，age，BMI，minzu，physical labor intensity，tobacco and alcohol consumption，daily salt intake，and exercise frequency were collected and 24-hour dynamic blood pressure monitoring was performed in them．The BPV was analyzed by sociodemographic characteristics and its associated factors were explored by multiple linear regression.Results　The standard deviation of 24-hour systolic blood pressure（24 hSBPSD），standard deviation of 24-hour diastolic blood pressure（24 hDBPSD），and standard deviation of 24-hour mean arterial pressure（24 hMAPSD） did not differ significantly between the patients by sex，age，BMI，minzu，alcohol consumption and exercise frequency（P>0.05）．Although 24 hDBPSD did not vary obviously between the patients by physical labor intensity（P>0.05），24 hSBPSD and 24 hMAPSD were much less in those with moderate-intensity physical labor compared with those with light-intensity physical labor（P<0.05）．24 hSBPSD changed significantly between the patients by tobacco consumption（P<0.05） but 24 hDBPSD and 24 hMAPSD did not（P>0.05）．Those with high daily salt intake（>6 g/d） had much higher 24 hSBPSD，24 hDBPSD and 24 hMAPSD than those with low daily salt intake（≤6 g/d，P<0.05）．Multiple linear regression analysis revealed that physical labor intensity，tobacco consumption，daily salt intake and exercise frequency were associated factors for 24 hSBPSD（P<0.05）；sex，tobacco consumption and daily salt intake were associated factors for 24 hDBPSD（P<0.05）；age，decreased physical labor intensity and daily salt intake were associated factors for 24 hMAPSD（P<0.05）．Conclusion　Sex，age，physical labor intensity，tobacco consumption，daily salt intake and exercise frequency are the factors influencing short-term BPV.

Key words: High blood pressure, Blood pressure variability, Root cause analysis

摘要： 目的　探讨宁夏地区社区高血压人群血压变异性（BPV）的影响因素。方法　选取2015年1月—2017年1月银川市某社区605例高血压患者，收集患者性别、年龄、BMI、民族、劳动强度、吸烟饮酒情况、每日食盐量、运动频率等资料，并进行24 h动态血压监测。比较不同特征高血压患者BPV，采用多元线性回归分析BPV的影响因素。结果　不同性别、年龄、BMI、民族、饮酒情况、运动频率患者24 h收缩压标准差（24 hSBPSD）、24 h舒张压标准差（24 hDBPSD）、24 h平均动脉压标准差（24 hMAPSD）比较，差异无统计学意义（P>0.05）。不同劳动强度患者24 hDBPSD比较，差异无统计学意义（P>0.05）；不同吸烟情况24 hDBPSD、24 hMAPSD比较，差异无统计学意义（P>0.05）。中/重体力劳动强度患者24 hSBPSD、24 hMAPSD低于轻体力劳动强度患者，食盐量>6 g/d患者24 hSBPSD、24 hDBPSD、24 hMAPSD高于食盐量≤6 g/d患者，差异有统计学意义（P<0.05）。不同吸烟情况患者24 hSBPSD比较，差异有统计学意义（P<0.05）。多元线性回归分析结果显示，劳动强度、吸烟情况、每日食盐量、运动频率是24 hSBPSD的影响因素，性别、吸烟、每日食盐量是24 hDBPSD的影响因素，年龄、劳动强度、每日食盐量是24 hMAPSD的影响因素（P<0.05）。结论　性别、年龄、劳动强度、吸烟情况、每日食盐量、运动频率是短时BPV的影响因素。

关键词: 高血压, 血压变异性, 影响因素分析