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American Journal of Epidemiology Vol. 126, No. 5: 871-881
Copyright © 1987 by The Johns Hopkins University School of Hygiene and Public Health

research-article

TRENDS IT CORONARY HEART DISEASE IN QUEENSLAND, 1971–1980 AN INTERPRETATION

VICTOR SISKIND1,, CHRISTOPHER BAIN1 and ANDREW WILSON2

1Department of Social and Preventive Medicine, University of Queensland Medical School Herston Road, Herston Q. 4006, Australia
2Department of Community Medicine, University of Sydney, Westrnead Centre Sydney, New South Wales, Australia

Reprint requests to Dr. Victor Siskind

Routine data on mortality and hospital activity were used to estimate changes in coronary heart disease mortality, case fatality, and hospitalizations In the Australian state of Queensland over the decade 1971–1980. Acute myocardial infarction (International Classification of Diseases (lCD) 410) and other lschemic heart disease (lCD 411–414) were considered separately. For acute myocardial infarction, age-adjusted total mortality declined by about one fourth in both men and women; in-hospital mortality decreased somewhat more and deaths out of hospital correspondingly less. The age-adjusted case fatality ratio fell by the same amount (29%), in both sexes. Similar trends occurred at all ages. Admission rates decreased 11% in men and 18% in women. Similar patterns were evident for other ischemlc heart disease except for admissions, which rose 23% among men and remained at the same level in women. These findings suggest that both declining Incidence, particularly in the form of fewer deaths out of hospital, and Improvements in care may have contributed to the general decline in coronary heart disease mortality In this community. Without direct measures of incidence or changing disease severity, the relative contributions of each factor cannot be examined.

coronary disease; hospitalization; morbidity; mortality


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