alexa Risk factors for intracerebral hemorrhage in the general population: a systematic review.
Materials Science

Materials Science

Journal of Nanomedicine & Nanotechnology

Author(s): Ariesen MJ, Claus SP, Rinkel GJ, Algra A

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Abstract BACKGROUND AND PURPOSE: Although data on some risk factors for intracerebral hemorrhage (ICH) already are beyond doubt, for other factors, the evidence is less clear. We performed a systematic overview of case-control and cohort studies on risk factors for ICH. METHODS: We searched MEDLINE, LILACS, EXTRAMED, and Pascal from 1966 to 2001 to identify studies. Studies were included if they met predefined methodological criteria. When possible, 2x2 tables were extracted and combined with the Mantel-Haenszel method. Summary odds ratios (ORs) were calculated for case-control studies, and summary relative risks (RRs) were found for cohort studies and for case-control and cohort studies combined. RESULTS: Fourteen case-control and 11 cohort studies were identified. We could not always combine the results of case-control and cohort studies. In cohort studies, the crude RR for age (every 10-year increase) was 1.97 (95\% confidence interval [CI], 1.79 to 2.16). In case-control studies, the crude OR for high alcohol intake was 3.36 (95\% CI, 2.21 to 5.12) and for hypertension was 3.68 (95\% CI, 2.52 to 5.38). Two cohort studies showed an increasing risk of ICH with increasing degree of hypertension. In cohort and case-control studies combined, the crude RR for sex (male versus female) was 3.73 (95\% CI, 3.28 to 4.25); for current smoking, 1.31 (95\% CI, 1.09 to 1.58); and for diabetes, 1.30 (95\% CI, 1.02 to 1.67). CONCLUSIONS: Risk factors for ICH appeared to be age, male sex, hypertension, and high alcohol intake. High cholesterol tends to be associated with a lower risk of ICH. We could not assess whether these risk factors are independent. This article was published in Stroke and referenced in Journal of Nanomedicine & Nanotechnology

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