Just over half of decrease due to fall in acute myocardial infarction event rates
THURSDAY, Jan. 26 (HealthDay News) -- From 2002 to 2010 in England, there was a decrease of about half in the total mortality rate for acute myocardial infarction, according to a study published online Jan. 25 in BMJ.
Kate Smolina, from the Department of Public Health in Oxford, U.K., and colleagues describe trends in event and case fatality rates for acute myocardial infarction from 2002 to 2010. Participants included 840,175 people of all ages who were admitted to hospital or died suddenly from acute myocardial infarction.
The investigators found that, from 2002 to 2010, there was a decrease by about half in the age-standardized total mortality rate, while the age-standardized event and case fatality rates decreased by approximately one third. For men, the annual decrease averaged 4.8 percent in the acute myocardial infarction rate, 3.6 percent in the case fatality rate, and 8.6 percent in the total mortality rate. The corresponding figures for women were 4.5, 4.2, and 9.1 percent. The relative contributions of reductions in the event and case fatality rates to the decrease in the acute myocardial infarction mortality rate were, respectively, 57 and 43 percent for men and 52 and 48 percent for women. Relative contributions varied with age, sex, and geographic region.
"Just over half of the decline in deaths from acute myocardial infarction during the 2000s in England can be attributed to a decline in event rate and just less than half to improved survival at 30 days. Both prevention of acute myocardial infarction and acute medical treatment have contributed to the decline in deaths from acute myocardial infarction over the past decade," the authors write.