Analysis on the mortality trend of senior dementia in Ningbo of Zhejiang Province from 2002 to 2021
Objective To analyze the mortality and its influencing factors of senior dementia in Ningbo from 2002 to 2021,and provide the scientific basis for formulating the prevention and control strategy of senior dementia.Methods The data of all death cases caused by senior dementia and the registered population in the same period of Ningbo from 2002 to 2021 were collected.The crude mortality caused by senior dementia,the standardized rates of the Chinese population(China rate)and the standardized rates of the world population(world rate)were calculated.The used software was SPSS 20.0.Joinpoint 4.9.1.0 software was used to calculate the average annual percent change(AAPC),and analyze the mortality trend caused by senior dementia.The differential decomposition method was used to calculate the added value and contribution of demographic aging and non-demographic factors to mortality.Results From 2002 to 2021,there were 8 617 death cases caused by senior dementia in Ningbo,the crude mortality was 38.43/105,the China rate was 33.44/105 and the world rate was 44.25/105.The crude mortality and the world rate showed a downward trend.The AAPC values were-1.08％and-1.48％(P＜0.05),respectively.From 2002 to 2021,the China rates of males and females showed a downtrend,AAPC values were-1.59％and-1.65％,respectively(P＜0.05).But the China rate(25.95/105)of senior dementia in males was significantly lower than that(40.87/105)in females(P＜0.05).From 2002 to 2021,there was no significant change of China rate of senior dementia in rural area,AAPC value was-0.98％(P＞0.05);China rate of senior dementia in urban area showed a downtrend,AAPC value was-3.33％(P＜0.05).China rate(28.90/105)of senior dementia in urban area was significantly lower that that(36.42/105)in rural area(P＜0.05).From 2002 to 2021,the crude mortality of senior dementia in 70-＜80 years old group showed a downtrend,AAPC value was-3.29％(P＜0.05).The difference between the crude mortality of senior dementia in all population in 2021 and 2002 was 2.19/105.The added value of population aging on mortality was 6.59/105,the contribution rate was 300.65％.The added value of mortality due to non-demographic factors was-4.40/105,the contribution rate was-200.65％.Conclusion The demographic aging may result in the increasing mortality caused by senior dementia,the change of other non-demographic factors may result in the decreasing mortality caused by senior dementia.The mortality caused by senior dementia in Ningbo shows a downtrend.It should explore the prevention and treatment strategy for senior dementia in females,rural areas and high age group,and take the targeted measures to improve the life quality and to reduce the mortality for senior dementia patients.
NETL
NSTL
万方数据
