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Indicator Details — Native Americans: Crude Prevalence of Hypertensiona
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a  P<0.001 for comparison of prevalence by age and obesity; P=0.3 for gender.

About 40% of this American Indian cohort had hypertension at baseline, and prevalence of hypertension was higher in older and obese study participants.
Chart Explanation: About 40% of this American Indian cohort had hypertension at baseline. Prevalence of hypertension was significantly higher among older and obese study participants, relative to their counterparts, but hypertension did not differ by gender.
The Strong Heart Study consisted of several components and three study exams (baseline, 1989-1992; second exam, 1993-1995; and third exam, 1998-1999), followed by morbidity and mortality surveillance of 4,500 tribal participants. Strong Heart enrolled men and women aged 45-74 at baseline from 13 American Indian tribes/communities in Arizona, Oklahoma, and the Dakotas. A total of 4,533 Strong Heart participants had baseline information on hypertension status, by self-reported diagnosis, measured blood pressure >140/>90 mmHg, or reported use of antihypertensive medications.
Description of MeasurePrevalence of hypertension
Data SourceStrong Heart Study
Type of Data SourcePrivate
Data SetSHS
Health Care System DataNo
Regional or National?National
Demographic GroupAmerican Indians aged 45-74 from 13 tribes/communities 
NumeratorNumber of participants existing hypertension at baseline exam
DenominatorAll participants at baseline exam
Definition of CKD--- 
Glomerular filtration rate---
Primary Data Source IndicatorPercentage of participants with existing hypertension at baseline exam, as indicated by self-reported diagnosis, use of antihypertensives, or measured blood pressure >140/>90 mmHg
Primary Indicator Method of MeasurementQuestionnaire, Exam
Frequency of Measurement (Primary)Once (cross-sectional at baseline exam)
U.S. Region Covered by Primary VariableArizona, Oklahoma, and the Dakotas
Period Currently Available1989–1992
Pending DataPossible continued passive follow-up only
Additional Data Items of InterestAge, gender, obesity, diabetes
Limitations of IndicatorPossible misclassification
Analytical ConsiderationsAnalysis performed by SHS investigators; denominators for each study exam and indicator must be defined properly

Suggested Citation:
Centers for Disease Control and Prevention. Chronic Kidney Disease Surveillance System—United States.
website. http://www.cdc.gov/ckd