Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2009 May 1;169(9):1070-8.
doi: 10.1093/aje/kwp029. Epub 2009 Mar 24.

Stroke rates: 1980-2000: the Minnesota Stroke Survey

Kamakshi Lakshminarayan  1 , David C Anderson, David R Jacobs Jr, Cheryl A Barber, Russell V Luepker
Affiliations

Stroke rates: 1980-2000: the Minnesota Stroke Survey

Kamakshi Lakshminarayan et al. Am J Epidemiol. .

Abstract

In this paper, the authors report trends in hospitalized stroke rates among Minneapolis-St. Paul, Minnesota (population 2.6 million) metropolitan area residents aged 30-74 years from 1980 to 2000. Cases were identified from lists of discharge diagnoses provided by hospitals serving the target population. Age-adjusted, sex-specific stroke attack rates were computed for each survey year by using 5 different diagnostic definitions: 2 based purely on International Classification of Diseases, Ninth Revision (ICD-9) codes and 3 including clinical and neuroimaging criteria. Stroke rates, as measured by a highly specific clinical definition, remained stable from 1980 to 2000 for women. For men, these rates declined modestly from 1980 to 1990 and leveled off during 1990-2000. In contrast, use of stroke-related ICD-9 discharge codes declined significantly from 1980 to 2000: 35% among men and 16% among women. Neuroimaging use increased significantly from 75% of cases in 1980 to 98% in 2000. Short-term (28-day) stroke survival improved significantly, by 16% for women and 12% for men, from 1980 to 2000. The decline in stroke ICD-9 code usage reflects the influence of increased neuroimaging on discharge coding. The improved short-term survival in the face of stable, clinically defined stroke rates may imply treatment advances or ascertainment of less severe strokes, possibly masking a true decline in stroke rates.

PubMed Disclaimer

Figures

Figure 1.
Figure 1.
Trends in stroke attack rates among men (A) and women (B) aged 30–74 years in the Minneapolis-St. Paul metropolitan area population from 1980 to 2000, by various stroke metrics in the Minnesota Stroke Survey. Square: International Classification of Diseases, Ninth Revision (ICD-9) code 431, 432, 434, 436, 437; dark circle: first-position ICD-9 code 431, 432, 434, 436, 437; diamond: World Health Organization stroke; open circle: Minnesota Stroke Survey stroke metric; star: neuroimaging stroke. Refer to the Materials and Methods section of the text for definitions of the various metrics.
Figure 2.
Figure 2.
Short-term and long-term survival trends after stroke in men (A) and women (B) aged 30–74 years in the Minneapolis-St. Paul metropolitan area population from 1980 to 2000 for cases determined according to the clinical Minnesota Stroke Survey definition of stroke. Refer to the Materials and Methods section of the text for a definition of this metric. Diamond: 1980; square: 1985; triangle: 1990; dark circle: 1995; open circle: 2000. Case fatality data are shown in Table 5.
See this image and copyright information in PMC

References

    1. Rosamond W, Flegal K, Furie K, et al. Heart disease and stroke statistics—2008 update: a report from the American Heart Association Statistics Committee and Stroke Statistics Subcommittee. Circulation. 2008;117(4):e25–e146. - PubMed
    1. Mokdad AH, Ford ES, Bowman BA, et al. Prevalence of obesity, diabetes, and obesity-related health risk factors, 2001. JAMA. 2003;289(1):76–79. - PubMed
    1. Clinical alert: benefit of carotid endarterectomy for patients with high-grade stenosis of the internal carotid artery. National Institute of Neurological Disorders and Stroke Stroke and Trauma Division. North American Symptomatic Carotid Endarterectomy Trial (NASCET) investigators. Stroke. 1991;22(6):816–817. - PubMed
    1. Stroke Prevention in Atrial Fibrillation Study. Final results. Circulation. 1991;84(2):527–539. - PubMed
    1. The International Stroke Trial (IST): a randomised trial of aspirin, subcutaneous heparin, both, or neither among 19435 patients with acute ischaemic stroke. International Stroke Trial Collaborative Group. Lancet. 1997;349(9065):1569–1581. - PubMed

Publication types