Abstract 14350: Trend in Acute Myocardial Infarction Mortality among Elderly People in China, 2002-2008
Background: In the US and China cardiovascular disease is the leading cause of death, but the trends may be distinctly different. In the US hospitalizations for AMI have declined by more than 20% since 2002. We sought to determine recent changes in death caused by AMI in China based on data available from the China Ministry of Health.
Methods: The data source was the China Ministry of Health 2002-2008 annual reports. Mortality was defined as death caused by AMI, and the population at risk was defined as individuals aged 65 years or older. Mortality rates for each year were calculated per 100,000 person-years. Descriptive analysis was conducted for overall trend and sub-group analysis was conducted by gender, age and urban/rural to understand potential disparities in mortality.
Results: From 2002-2008, the overall AMI mortality rate increased from 248 per 100,000 person-years in 2002 to 391 in 2008 for patients aged 65 or older, a 58% relative increase. The increase in AMI mortality was not uniformly observed across age groups, urban/rural and gender. The relative increases were 24% and 72% for age 65-69 and 85 or older groups, respectively. Large urban areas had a relative increase of 36% vs. 150% for rural areas. The relative increases were 31% (large urban) vs. 111% (rural) and 28% (large urban) vs. 210% (rural) for age 65-69 and 85 or older groups, respectively. Female who lived in an urban environment had a higher relative increase than male (38% vs. 32%).
Conclusions: Based on Chinese Ministry of Health 2002-2008 annual reports, the observed AMI mortality rates between 2002 and 2008 have increased by relative 58% for the elderly population in China. Further work is necessary to determine if the changes are the result of better diagnostic methods or a changing epidemiology.
- © 2010 by American Heart Association, Inc.