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Background. The incidence and mortality of all types of strokes, including intracerebral hemorrhages,
declined during the 1970s. However, some evidence exists that these trends stabilized
or reversed during the 1980s. In the present study, a large North American population
was observed from 1981 to 1989 to assess changes in the annual hospital admission
rates of intracerebral hemorrhage. Method. Data provided by the Connecticut Health Information Management and Exchange (CHIME,
Wallingford, Connecticut), a state-wide clinical database of records submitted voluntarily
by all of Connecticut's 36 acute care, nongovernment hospitals, was analyzed for all
patients with primary diagnosis of intracerebral hemorrhage (ICD-9-CM=431) for the
fiscal years 1981, 1983, 1985, 1987, 1988, and 1989. Results. During the time periods studied, there were 3,277 hospitalizations with a primary
diagnosis of intracerebral hemorrhage. There was an initial annual hospital admission
rate of 12 per 100,000 in 1981. Rates steadily increased to nearly 20 per 10,000 in
1988 and 1989. This increase in hospital admission rates from intracerebral hemorrhage
was statistically significant when the data were adjusted for gender, race, and age
(P<.001). When admission rates for intracerebral hemorrhage were stratified by age,
admission rates increased dramatically only in those 65 years and older (P<.001). The in-hospital death rate decreased during the study decade (P=.004); however, age-adjusted analysis indicated that in-hospital deaths increased
significantly (P<.001) in patients 65 years and older. Conclusions. Hospital admission rates for intracerebral hemorrhage nearly doubled from 1981 to
1989. This change may be due to an actual increase in the annual incidence of intracerebral
hemorrhage caused by mechanisms that are not yet fully understood.
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Article info
Publication history
Accepted:
January 8,
1997
Received:
August 8,
1996
Identification
Copyright
© 1997 National Stroke Division. Published by Elsevier Inc.
