MedStar Authors catalog › Details for: Utilizing harmonization and common surveillance methods to consolidate 4 cohorts: the Western Alaska Tribal Collaborative for Health (WATCH) study.
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Utilizing harmonization and common surveillance methods to consolidate 4 cohorts: the Western Alaska Tribal Collaborative for Health (WATCH) study.

by Umans, Jason G; Howard, Barbara V.
Citation: International Journal of Circumpolar Health. 72, 2013..Journal: International journal of circumpolar health.ISSN: 1239-9736.Full author list: Koller KR; Wolfe AW; Metzger JS; Austin MA; Hopkins SE; Kaufmann C; Jolly SE; Ebbesson SO; Umans JG; Howard BV; Boyer BB.UI/PMID: 23671836.Subject(s): Adolescent | Adult | Aged | Aged, 80 and over | Alaska/ep [Epidemiology] | Arctic Regions/ep [Epidemiology] | *Cardiovascular Diseases/eh [Ethnology] | Chronic Disease | Cohort Studies | Databases, Factual | *Diabetes Mellitus/eh [Ethnology] | Female | *Health Surveys/sn [Statistics & Numerical Data] | Humans | Incidence | *Inuits | Male | Middle Aged | Risk Factors | Rural Population/sn [Statistics & Numerical Data] | *Sentinel Surveillance | Young AdultInstitution(s): MedStar Health Research InstituteActivity type: Journal Article.Medline article type(s): Journal Article | Research Support, American Recovery and Reinvestment Act | Research Support, N.I.H., Extramural | Research Support, Non-U.S. Gov'tOnline resources: Click here to access online Digital Object Identifier: (Click here) Abbreviated citation: Int J Circumpolar Health. 72, 2013.Local Holdings: Available online through MWHC library: 2002 - present.Abstract: BACKGROUND: According to health status reports, chronic disease prevalence appears to be rising in western Alaska Native (AN) people, and accurate population-based data are needed. Four cohort studies of western AN people were conducted in the Norton Sound and Yukon-Kuskokwim regions, but none have been large enough to allow reliable estimates of rates of chronic diseases and evaluate their risk factors.Abstract: OBJECTIVE: In this article, the methods used to combine 4 major cohort studies of rural western AN people are described and the benefits and challenges encountered in combining data and standardizing surveillance methods for these studies are discussed.Abstract: DESIGN: Tribal permission was obtained for each cohort study and the consolidated study. Data from baseline exams were directly combined or harmonized into new variables. Common surveillance methods were developed and implemented to identify incidence and risk factors for cardiovascular disease (CVD) events and type 2 diabetes.Abstract: RESULTS: A cohort of 4,569 western AN participants (2,116 men and 2,453 women), aged 18-95 years, was established to study CVD and diabetes prevalence. Prospective surveillance data over an average 6.7-year follow-up can now be used to study CVD and diabetes incidence and associated risk factors in a subset of 2,754 western AN participants (1,218 men and 1,536 women) who consented to initial surveillance.Abstract: CONCLUSIONS: The combined cohort provides statistical power to examine incidence rates and risk factors for CVD and diabetes and allows for analyses by geographic region. The data can be used to develop intervention programmes in these populations and others.

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