Copyright © 1999 by the European Society of Cardiology.
Trends in three-year survival following acute myocardial infarction, 19831992
Department of Community Health, Faculty of Medicine and Health Science, University of Auckland, Auckland, New Zealand
Received July 7, 1998; accepted October 28, 1998
Abstract
Aims As part of an investigation into the decline in coronary heart disease mortality rates in New Zealand, we examined long-term survival trends following acute myocardial infarction.
Methods and Results A 3-year follow-up of patients on a community-based register of coronary heart disease for the period 19831992 in Auckland, New Zealand, part of the World Health Organizations MONICA (multinational Monitoring of Trends and Determinants in Cardiovascular Disease) Project, has been completed. The 3-year survival status of acute myocardial infarction patients aged 2564 years who were alive 28 days after their first event has been obtained. The 2940 men and women followed for 3 years after an acute myocardial infarction showed significant steady improvement over the 10-year study period (P=0·004). The 3-year survival of patients registered in 19831984 was 86% and by 19911992 it was 92%.
Conclusion The gains in long-term survival following acute myocardial infarction are statistically significant but contribute only marginally to the decline in coronary heart disease death rates in Auckland since most deaths occur in the first 28 days after the event.
Key Words: Myocardial infarction population survival trends
f1 Correspondence: Alistair W. Stewart, Department of Community Health, Faculty of Medicine and Health Science, 85 Park Rd, University of Auckland, Private Bag 92019, Auckland, New Zealand.