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Heart Disease and Stroke Maps Data Sources
Mortality Data
We obtained death
certificate data through the National Center for Health
Statistic's (NCHS's) National Vital Statistics System,1 a
compilation of statistics from all death certificates filed in the 50
states and the District of Columbia. For each decedent, underlying
cause of death, age, race, ethnicity, gender, and county of residence at
the time of death were abstracted from computerized death certificate
files.
Stroke Deaths
Stroke deaths were defined as those
for which the underlying cause of death listed on the death certificate
was cerebrovascular disease, defined according to the International
Classification of Diseases, 9th Revision, Clinical Modification
(ICD–9–CM).2 The ICD–9–CM codes for cerebrovascular
disease are 430–438.
Heart Disease Deaths
We defined a heart disease death as any death for which the underlying
cause of death recorded on the death certificate fell into the category
"diseases of the heart," as defined by the National Center for Health
Statistics. This category included deaths coded 390–398, 402, 404–429
under the Ninth Revision of the International Classification of Diseases
and codes I00–I09, I11, I13, I20–I51 under the Tenth Revision of the
International Classification of Diseases.
Population
Data
We obtained population
data for all U.S. counties from the U.S. Bureau of the Census.
These postcensal estimates were calculated by the U.S. Bureau of the
Census through extrapolation of linear trends in population growth and
intercounty migration patterns between the 1980 and 1990 censuses.
References
- CDC. National Vital
Statistics System Web site. Available at http://www.cdc.gov/nchs/nvss.htm.
Accessed June 12, 2002.
- US Department of
Health and Human Services. The International Classification of
Diseases, 9th Revision, Clinical Modification. Washington, DC: US
Department of Health and Human Services, Public Health Service, Health
Care Financing Administration; 1980. DHHS publication no. (PHS) 80–1260.
Date last reviewed:
05/12/2006
Content source: Division for Heart Disease and Stroke
Prevention,
National Center for Chronic Disease Prevention and
Health Promotion |
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