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The Cardiovascular Risk of White-Coat Hypertension
Univ Calif Irvine, Sch Med, Div Cardiol, Heart Dis Prevent Program, Irvine, CA 92717 USA..
Katholieke Univ Leuven, Dept Cardiovasc Sci, Res Unit Hypertens & Cardiovasc Epidemiol, Studies Coordinating Ctr, Leuven, Belgium..
Tohoku Univ, Grad Sch Pharmaceut Sci, Sendai, Miyagi, Japan.;Teikyo Univ, Sch Med, Dept Hyg & Publ Hlth, Tokyo, Japan..
Shanghai Jiao Tong Univ, Sch Med, Ruijin Hosp, Ctr Epidemiol Studies & Clin Trials, Shanghai, Peoples R China.;Shanghai Jiao Tong Univ, Sch Med, Ruijin Hosp, Ctr Vasc Evaluat, Shanghai, Peoples R China..
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2016 (English)In: Journal of the American College of Cardiology, ISSN 0735-1097, E-ISSN 1558-3597, Vol. 68, no 19, 2033-2043 p.Article in journal (Refereed) Published
Abstract [en]

BACKGROUND The role of white-coat hypertension (WCH) and the white-coat-effect (WCE) in development of cardiovascular disease (CVD) risk remains poorly understood. OBJECTIVES Using data from the population-based, 11-cohort IDACO (International Database on Ambulatory Blood Pressure Monitoring in Relation to Cardiovascular Outcomes), this study compared daytime ambulatory blood pressure monitoring with conventional blood pressure measurements in 653 untreated subjects with WCH and 653 normotensive control subjects. METHODS European Society Hypertension guidelines were used as a 5-stage risk score. Low risk was defined as 0 to 2 risk factors, and high risk was defined as >= 3 to 5 risk factors, diabetes, and/or history of prior CVD events. Age-and cohort-matching was done between 653 untreated subjects with WCH and 653 normotensive control subjects. RESULTS In a stepwise linear regression model, systolic WCE increased by 3.8 mm Hg (95% confidence interval [CI]: 3.1 to 4.6 mm Hg) per 10-year increase in age, and was similar in low-and high-risk subjects with or without prior CVD events. Over a median 10.6-year follow-up, incidence of new CVD events was higher in 159 high-risk subjects with WCH compared with 159 cohort-and age-matched high-risk normotensive subjects (adjusted hazard ratio [HR]: 2.06; 95% CI: 1.10 to 3.84; p = 0.023). The HR was not significant for 494 participants with low-risk WCH and age-matched low-risk normotensive subjects. Subgroup analysis by age showed that an association between WCH and incident CVD events is limited to older (age >= 60 years) high-risk WCH subjects; the adjusted HR was 2.19 (95% CI: 1.09 to 4.37; p = 0.027) in the older high-risk group and 0.88 (95% CI: 0.51 to 1.53; p = 0.66) in the older low-risk group (p for interaction = 0.044). CONCLUSIONS WCE size is related to aging, not to CVD risk. CVD risk in most persons with WCH is comparable to age-and risk-adjusted normotensive control subjects.

Place, publisher, year, edition, pages
2016. Vol. 68, no 19, 2033-2043 p.
Keyword [en]
ambulatory blood pressure monitoring, cardiovascular disease, epidemiology, white-coat effect
National Category
Cardiac and Cardiovascular Systems
Identifiers
URN: urn:nbn:se:uu:diva-308892DOI: 10.1016/j.jacc.2016.08.035ISI: 000386829300001PubMedID: 27810041OAI: oai:DiVA.org:uu-308892DiVA: diva2:1051305
Funder
EU, European Research Council, IC15-CT98-0329-EPOGH LSHM-CT-2006-037093 InGenious HyperCare HEALTH-F4-2007-201550 HyperGenes HEALTH-F7-2011-278249 EU-MASCARA HEALTH-F7-305507 HOMAGE LSHM-CT-2006-037093 HEALTH-F4-2007-201550 294713 EPLORE
Available from: 2016-12-01 Created: 2016-12-01 Last updated: 2016-12-01Bibliographically approved

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