Calibration of blood pressure measurements in the Jackson Heart Study

• Type of Material: Article
• Authors: Samantha R. Seals, University of Mississippi; Lisandro D. Colantonio, University of Alabama at Birmingham; Jonathan V. Tingle, Emory University; Dalchi Shimbo, Columbia University; Adolfo Correa, Emory University; Michael E. Griswold, University of Mississippi; Paul Muntner, The University of Alabama at Birmingham
• Language: English
• Date: 2019-06-01
• Publisher: Wolters Kluwer Health
• Publication Version: Author Accepted Manuscript (After Peer Review)
• Copyright Statement: © 2019 Wolters Kluwer Health, Inc. All rights reserved.
• License: Creative Commons Attribution-NonCommercial 4.0 International
• Final Published Version (URL): http://dx.doi.org/10.1097/MBP.0000000000000379
• Title of Journal or Parent Work: Blood Pressure Monitoring
• Volume: 24
• Issue: 3
• Start Page: 130
• End Page: 136
• Grant/Funding Information: The Jackson Heart Study (JHS) is supported and conducted in collaboration with Jackson State University (HHSN268201300049C and HHSN268201300050C), Tougaloo College (HHSN268201300048C), and the University of Mississippi Medical Center (HHSN268201300046C and HHSN268201300047C) contracts from the National Heart, Lung, and Blood Institute (NHLBI) and the National Institute for Minority Health and Health Disparities (NIMHD).; Additionally, funding was provided through R01 HL117323 from the NHLBI and 15SFRN2390002 from the American Heart Association.
• Keywords: Humans; Young Adult; Prevalence; Adult; Blood Pressure; Sphygmomanometers; Middle Aged; Female; Oscillometry; Male; Hypertension; Albuminuria; Longitudinal Studies; Blood Pressure Determination; Calibration
• Research Categories: Biology, Biostatistics; Biology, Bioinformatics; Health Sciences, Epidemiology; Health Sciences, Public Health

Abstract

In longitudinal research studies with follow-up examinations, the devices used to measure phenotypes may change over time. When a device change occurs, the two devices should be calibrated to each other to ensure that measurements are comparable. This paper details the Jackson Heart Study (JHS) blood pressure (BP) comparability study.Participants and methodsDuring its second clinic exam (2005-2008), the JHS switched from a random-zero sphygmomanometer (RZS) BP measurement device to an oscillometric device (OD). During this exam, BP measurements from both an RZS and an OD were taken simultaneously in 2117 participants for the purpose of calibration. Five methods for calibrating systolic BP (SBP) and diastolic BP (DBP) were considered: ignoring the change, ordinary least squares regression, adding the average difference, Deming regression, and robust regression.ResultsUsing the RZS and OD, the mean (SD) SBP was 125.5 (19.2) and 126.5 (19.9), respectively, and the mean (SD) DBP was 76.4 (10.6) and 74.0 (11.0), respectively. The correlation between RZS and the OD was 0.90 for SBP and 0.80 for DBP. The prevalence of high BP and hypertension and associations with albuminuria were similar when applying each of the five calibration methods. Robust regression was chosen for calibration, giving the following equations:These equations had a higher R2 statistic than using calibration equations from the Coronary Artery Risk Development in Young Adults Study and the Heinz Nixdorf Recall Study.ConclusionsThe JHS BP data have been calibrated using the above equations for use in future analyses.