Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/46905
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Type: Journal article
Title: Smoking and elevated blood pressure are the most important risk factors for subarachnoid hemorrhage in the Asia-Pacific region: An overview of 26 cohorts involving 306 620 participants
Author: Feigin, V.
Parag, V.
Lawes, C.
Rodgers, A.
Suh, I.
Woodward, M.
Jamrozik, K.
Ueshima, H.
Citation: Stroke, 2005; 36(7):1360-1365
Publisher: Lippincott Williams & Wilkins
Issue Date: 2005
ISSN: 0039-2499
1524-4628
Abstract: Background and Purpose--The cause of subarachnoid hemorrhage (SAH) is poorly understood and there are few large cohort studies of risk factors for SAH. We investigated the risk of SAH mortality and morbidity associated with common cardiovascular risk factors in the Asia-Pacific region and examined whether the strengths of these associations were different in Asian and Australasian (predominantly white) populations. Methods--Cohort studies were identified from Internet electronic databases, searches of proceedings of meetings, and personal communication. Hazard ratios (HRs) for systolic blood pressure (SBP), current smoking, total serum cholesterol, body mass index (BMI), and alcohol drinking were calculated from Cox models that were stratified by sex and cohort and adjusted for age at risk. Results--Individual participant data from 26 prospective cohort studies (total number of participants 306 620) that reported incident cases of SAH (fatal and/or nonfatal) were available for analysis. During the median follow-up period of 8.2 years, a total of 236 incident cases of SAH were observed. Current smoking (HR, 2.4; 95% CI, 1.8 to 3.4) and SBP >140 mm Hg (HR, 2.0; 95% CI, 1.5 to 2.7) were significant and independent risk factors for SAH. Attributable risks of SAH associated with current smoking and elevated SBP (140 mm Hg) were 29% and 19%, respectively. There were no significant associations between the risk of SAH and cholesterol, BMI, or drinking alcohol. The strength of the associations of the common cardiovascular risk factors with the risk of SAH did not differ much between Asian and Australasian regions. Conclusions--Cigarette smoking and SBP are the most important risk factors for SAH in the Asia-Pacific region.
Keywords: subarachnoid hemorrhage
Description: © 2005 American Heart Association
RMID: 0020081299
DOI: 10.1161/01.STR.0000170710.95689.41
Published version: http://stroke.ahajournals.org/cgi/content/abstract/01.STR.0000170710.95689.41v1
Appears in Collections:Medicine publications

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