Analysis of trends and characteristics of mortality of ischemic heart disease over the age of 35 years old in China, 2004-2011

Abstract

To analyze the features of distribution and variation trends of mortality of ischemic heart disease over the age of 35 years old in China, 2004-2011. A total of 493 274 cases were recruited in the study, the mortality data of the ischemic heart diseases were collected from the national disease surveillance point (DSP) system between 2004 and 2011. The change of ischemic heart disease standardized mortality was described, and the annual change percentage of age group mortality and standardized mortality were analyzed using log linear regression method. In 2004-2011, the standardized mortality of ischemic heart disease over the age of 35 showed an upward trend in each regions of China.In 2004, the ischemic heart disease standardized mortality over the age of 35 was 176.2/100 000 among males and 131.7/100 000 among females in urban areas, and the figures increased to 204.6/100 000 and 147.9/100 000 respectively in 2011.In 2004, the ischemic heart disease standardized mortality over the age of 35 was 164.4/100 000 among males and 122.2/100 000 among females in rural areas, and the figures increased to 236.8/100 000 and 151.5/100 000 respectively in 2011. The ischemic heart disease standardized mortality was lower in rural regions than in urban regions in 2004, but it changed to be higher in rural regions than in urban regions in 2011 both in males and female. The annual growth rate of ischemic heart disease mortality over the age of 35 was separately 5.00% in male and 3.65% in female. The annual growth rate was highest among males in rural areas (7.09%), followed by females in rural areas (5.06%). The growth rate was lowest among females in urban areas (1.69%).It was found that the increasing trends of ischemic heart disease mortality of males both in urban and rural areas, and females in rural areas was statistically significant (P < 0.05). The mortality of ischemic heart disease has still been showing an uprising trend, especially in the rural areas.