Stang Andreas, Moebus Susanne, Möhlenkamp Stefan, Dragano Nico, Schmermund Axel, Beck Eva-Maria, Siegrist Johannes, Erbel Raimund, Jöckel Karl-Heinz
Institute of Medical Epidemiology, Biometry and Informatics, Medical Faculty, University of Halle-Wittenberg, Halle, Germany.
Am J Epidemiol. 2006 Jul 1;164(1):85-94. doi: 10.1093/aje/kwj160. Epub 2006 May 4.
Many surveys and cohort studies have used a random-zero sphygmomanometer blood pressure device (RZS) to measure subjects' blood pressure and to assess the value of blood pressure in predicting cardiovascular events. Recent studies used automated oscillometric blood pressure devices (AODs) that systematically measure higher blood pressure values than RZSs do, hampering comparability of values between these studies. In 2000-2003, the authors randomly used both an RZS and an AOD in an ongoing cohort study in Germany. This analysis aimed to compare blood pressure values by device and to develop an algorithm to convert estimates of blood pressure values from one device to the other. In a randomized subset of 2,365 subjects aged 45-75 years, each subject was measured three times with each device in a randomized order. The mean difference (AOD-RZS) between the devices was 3.9 mmHg for systolic blood pressure and 2.6 mmHg for diastolic blood pressure. The authors found that linear regression models including age, sex, and blood pressure level can be used to convert RZS blood pressure values to AOD blood pressure values, and vice versa. Results may help to better compare blood pressure values in epidemiologic studies that used different blood pressure devices.
许多调查和队列研究都使用随机零点血压计（RZS）来测量受试者的血压，并评估血压在预测心血管事件中的价值。近期研究使用的自动振荡式血压计（AOD）系统测量的血压值高于RZS，这妨碍了这些研究之间数据的可比性。2000年至2003年期间，作者在德国一项正在进行的队列研究中随机使用了RZS和AOD。该分析旨在比较不同设备测量的血压值，并开发一种算法，将一种设备的血压估计值转换为另一种设备的血压估计值。在一个由2365名年龄在45至75岁之间的受试者组成的随机子集中，每个受试者使用每种设备按照随机顺序测量三次。两种设备之间收缩压的平均差值（AOD - RZS）为3.9 mmHg，舒张压为2.6 mmHg。作者发现，包含年龄、性别和血压水平的线性回归模型可用于将RZS血压值转换为AOD血压值，反之亦然。研究结果可能有助于更好地比较使用不同血压测量设备的流行病学研究中的血压值。
