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A sudden death risk score specifically for hypertension: based on 25648 individual patient data from six randomized controlled trials
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2017 (English)In: Journal of Hypertension, ISSN 0263-6352, E-ISSN 1473-5598, Vol. 35, no 11, p. 2178-2184Article in journal (Refereed) Published
Abstract [en]

Objective: To construct a sudden death risk score specifically for hypertension (HYSUD) patients with or without cardiovascular history. Methods: Data were collected from six randomized controlled trials of antihypertensive treatments with 8044 women and 17 604 men differing in age ranges and blood pressure eligibility criteria. In total, 345 sudden deaths (1.35%) occurred during a mean follow-up of 5.16 years. Risk factors of sudden death were examined using a multivariable Cox proportional hazards model adjusted on trials. The model was transformed to an integer system, with points added for each factor according to its association with sudden death risk. Results: Antihypertensive treatment was not associated with a reduction of the sudden death risk and had no interaction with other factors, allowing model development on both treatment and placebo groups. A risk score of sudden death in 5 years was built with seven significant risk factors: age, sex, SBP, serum total cholesterol, cigarette smoking, diabetes, and history of myocardial infarction. In terms of discrimination performance, HYSUD model was adequate with areas under the receiver operating characteristic curve of 77.74% (confidence interval 95%, 74.13-81.35) for the derivation set, of 77.46% (74.09-80.83) for the validation set, and of 79.17% (75.94-82.40) for the whole population. Conclusion: Our work provides a simple risk-scoring system for sudden death prediction in hypertension, using individual data from six randomized controlled trials of antihypertensive treatments. HYSUD score could help assessing a hypertensive individual's risk of sudden death and optimizing preventive therapeutic strategies for these patients.

Place, publisher, year, edition, pages
LIPPINCOTT WILLIAMS & WILKINS , 2017. Vol. 35, no 11, p. 2178-2184
Keywords [en]
cardiovascular diseases, cardiovascular risk factor, diabetes, hypertension, risk score, sudden death
National Category
Cardiac and Cardiovascular Systems Public Health, Global Health, Social Medicine and Epidemiology
Identifiers
URN: urn:nbn:se:umu:diva-140876DOI: 10.1097/HJH.0000000000001451ISI: 000411899000011PubMedID: 28650919OAI: oai:DiVA.org:umu-140876DiVA, id: diva2:1158422
Available from: 2017-11-20 Created: 2017-11-20 Last updated: 2018-06-09Bibliographically approved

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Al-Gobari, Muaamar

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