Trends in the incidence of hospitalized acute myocardial infarction and stroke in Korea, 2006-2010

Abstract

This study attempted to calculate and investigate the incidence of hospitalized acute myocardial infarction (AMI) and stroke in Korea. Using the National Health Insurance claim data, we investigated patients whose main diagnostic codes included AMI or stroke during 2006 to 2010. As a result, we found out that the number of AMI hospitalized patients had decreased since 2006 and amounted to 15,893 in 2010; and that the number of those with stroke had decreased since 2006 and amounted to 73,501 in 2010. The age-standardized incidence rate of hospitalized AMI, after adjustment for readmission, was 41.6 cases per 100,000-population in 2006, and had decreased to 29.4 cases in 2010 (for trend P < 0.001). In the case of stroke was estimated at 172.8 cases per 100,000-population in 2006, and had decreased to 135.1 cases in 2010 (for trend P < 0.001). In conclusion, the age-standardized incidence rates of both hospitalized AMI and stroke in Korea had decreased continuously during 2006 to 2010. We consider this decreasing trend due to the active use of pharmaceuticals, early vascular intervention, and the national cardio-cerebrovascular disease care project as the primary and secondary prevention efforts.

Keywords: Acute Myocardial Infarction; Epidemiology; Patient Readmission; Stroke.

Fig. 1

Age-standardized incidence rate of hospitalized AMI after adjustment for readmission, 2006-2010. (A) Incidence overall and by sex. (B) Incidence by age groups (year).

Fig. 2

Age-standardized incidence rate of stroke after adjustment for readmission, 2006-2010. (A) Incidence overall and by sex. (B) Incidence by age groups (year).