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Risk Stratification by 24-Hour Ambulatory Blood Pressure and Estimated Glomerular Filtration Rate in 5322 Subjects From 11 Populations
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2013 (English)In: Hypertension, ISSN 0194-911X, E-ISSN 1524-4563, Vol. 61, no 1, 18-+ p.Article in journal (Refereed) Published
Abstract [en]

No previous study addressed whether in the general population estimated glomerular filtration rate (eGFR [Chronic Kidney Disease Epidemiology Collaboration formula]) adds to the prediction of cardiovascular outcome over and beyond ambulatory blood pressure. We recorded health outcomes in 5322 subjects (median age, 51.8 years; 43.1% women) randomly recruited from 11 populations, who had baseline measurements of 24-hour ambulatory blood pressure (ABP(24)) and eGFR. We computed hazard ratios using multivariable-adjusted Cox regression. Median follow-up was 9.3 years. In fully adjusted models, which included both ABP(24) and eGFR, ABP(24) predicted (P <= 0.008) both total (513 deaths) and cardiovascular (206) mortality; eGFR only predicted cardiovascular mortality (P=0.012). Furthermore, ABP(24) predicted (P <= 0.0056) fatal combined with nonfatal events as a result of all cardiovascular causes (555 events), cardiac disease (335 events), or stroke (218 events), whereas eGFR only predicted the composite cardiovascular end point and stroke (P <= 0.035). The interaction terms between ABP(24) and eGFR were all nonsignificant (P >= 0.082). For cardiovascular mortality, the composite cardiovascular end point, and stroke, ABP(24) added 0.35%, 1.17%, and 1.00% to the risk already explained by cohort, sex, age, body mass index, smoking and drinking, previous cardiovascular disease, diabetes mellitus, and antihypertensive drug treatment. Adding eGFR explained an additional 0.13%, 0.09%, and 0.14%, respectively. Sensitivity analyses stratified for ethnicity, sex, and the presence of hypertension or chronic kidney disease (eGFR <60mL/min per 1.73 m(2)) were confirmatory. In conclusion, in the general population, eGFR predicts fewer end points than ABP(24). Relative to ABP(24), eGFR is as an additive, not a multiplicative, risk factor and refines risk stratification 2-to14-fold less.

Place, publisher, year, edition, pages
2013. Vol. 61, no 1, 18-+ p.
Keyword [en]
ambulatory blood pressure, population science, renal function, cardiovascular risk factors, epidemiology
National Category
Medical and Health Sciences
URN: urn:nbn:se:uu:diva-192439DOI: 10.1161/HYPERTENSIONAHA.112.197376ISI: 000312386200013OAI: oai:DiVA.org:uu-192439DiVA: diva2:600319
Available from: 2013-01-24 Created: 2013-01-21 Last updated: 2013-01-24Bibliographically approved

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Bjorklund-Bodegard, KristinaLind, Lars
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