Declining rates of coronary heart disease in New Zealand and Australia 1983-1993

R Beaglehole, A. Stewart, R. Jackson, A. Dobson, P. Mcelduff, K. D'Este, R.F. Heller, K. Jamrozik, Michael Hobbs, R.W. Parsons, Robyn Broadhurst

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Abstract

The authors report the results of 10 years of monitoring of trends in the rates of major nonfatal and fatal coronary events and in case fatality in Auckland, New Zealand, and in Newcastle and Perth, Australia. Continuous surveillance of all suspected myocardial infarctions and coronary deaths in people aged 35-64 years was undertaken in the three centers as part of the World Health Organization's Multinational Monitoring of Trends and Determinants in Cardiovascular Disease (MONICA) Project, For nonfatal definite myocardial infarction, there were statistically significant declines in rates in all centers in both men and women, with estimated average changes between 2.5% and 3.7% per year during the period 1984-1993, Rates of all coronary deaths also declined significantly in all three populations for both men and women. In absolute terms, there was, in general, a greater reduction in prehospital deaths than in deaths after hospitalization. Although 28-day case fatality remains high at between 35% and 50%, in the Australian centers it declined significantly by between 1.0% and 2.9% per year, and in Auckland there was also a small decline, However, since most deaths occur outside the hospital in people without a previous history of coronary heart disease, an increased emphasis on primary prevention is necessary.
Original languageEnglish
Pages (from-to)707-713
JournalAmerican Journal of Epidemiology
Volume145
Issue number8
DOIs
Publication statusPublished - 1997

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