Objective To understand the changes of life expectancy and death spectrum in Zhejiang province residents from 2011 to 2020, to analyze the main diseases factors affecting the growth of life expectancy, and to provide the reference for health decision-making.
Methods The data were from the registration information of death cases in the chronic disease monitoring information management system in Zhejiang. The crude mortality, life expectancy, cause-of-death life expectancy and age decomposition of life expectancy were used to analyze the changes of death spectrum in Zhejiang Province residents and to compare the influencing of life expectancy in different age groups and different death cause group. The software SAS 9.4 and Excel 2013 were used for the statistics analysis.
Results The life expectancy in Zhejiang province increased by 0.36 years annually from 2011 to 2020; The impact of the reduction of infant mortality on the growth of life expectancy is 15.37% of the whole age group, and the contribution rate of the elderly group accounted for 53.08%. The contribution of infant group to life expectancy gradually decreases, while of the elderly group significantly increases. The circulatory diseases and malignant tumors have always been the first and second causes of death in Zhejiang province, which were the main reason for the loss of life expectancy. The respiratory diseases were the main cause for growth of life expectancy over the past 10 years. The top five causes of life loss in 2020 were cerebrovascular disease, heart disease, lung cancer, chronic lower respiratory disease and accidental fall, respectively.
Conclusion Chronic diseases have become the main cause of death in Zhejiang province residents. To further improve the life expectancy of the population, it is necessary to establish and improve the comprehensive prevention and control system of chronic diseases, focus on the intervention of people over 60 years old, improving the health of residents in an aging society.
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