http://stroke.ahajournals.org/content/45/9/2575.abstract?etoc
The Minnesota Stroke Survey
- Kamakshi Lakshminarayan, MD, PhD;
- Alan K. Berger, MD, MS;
- Candace C. Fuller, PhD, MPH;
- David R. Jacobs Jr, PhD;
- David C. Anderson, MD;
- Lyn M. Steffen, PhD;
- Arthur Sillah, MPH;
- Russell V. Luepker, MD, MS
+ Author Affiliations
- Correspondence to Kamakshi Lakshminarayan, MD, PhD, Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, 1300 S Second St, Suite 300, Minneapolis, MN 55454-1015. E-mail laksh004@umn.edu
Abstract
Background and Purpose—We report on trends in poststroke survival, both in the early period after stroke and over the long term. We examine these
trends by stroke subtype.
Methods—The
Minnesota Stroke Survey is a study of all hospitalized patients with
acute stroke aged 30 to 74 years in the Minneapolis–St
Paul metropolis. Validated stroke events were
sampled for survey years 1980, 1985, 1990, 1995, and 2000 and subtyped
as ischemic
or hemorrhagic by neuroimaging for survey
years 1990, 1995, and 2000. Survival was obtained by linkage to vital
statistics
data through the year 2010.
Results—There were 3773 acute stroke events. Age-adjusted 10-year survival improved from 1980 to 2000 (men 29.5% and 46.5%; P<0.0001; women 32.6% and 50.5%; P<0.0001). Ten-year ischemic stroke survival (n=1667) improved from 1990 to 2000 (men 35.3% and 50%; P=0.0001; women 38% and 55.3%; P<0.0001). Ten-year hemorrhagic stroke survival showed a trend toward improvement, but this (n=489) did not reach statistical
significance, perhaps because of their smaller number (men 29.7% and 45.8%; P=0.06; women 39.2% and 49.6%; P=0.2). Markers of stroke severity including unconsciousness or major neurological deficits at admission declined from 1980
to 2000 while neuroimaging use increased.
Conclusions—These
poststroke survival trends are likely because of multiple factors,
including more sensitive case ascertainment shifting
the case mix toward less severe strokes,
improved stroke care and risk factor management, and overall
improvements in population
health and longevity.
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