Abstract
BACKGROUND: The global burden of disease research shows that the disease burden of dementia (including Alzheimer's disease and other dementias) is increasing. OBJECTIVE: This study aims to analyze the trends of dementia deaths among residents in Suzhou and explore the impact of population aging on dementia mortality rates during the period from 2004 to 2023. METHODS: The study utilizes demographic dementia mortality data of Suzhou's registered residents over the 20-year period for comprehensive analysis. Joinpoint regression analysis was employed to estimate the average annual percentage changes (AAPC) in indicators for dementia. Using the method of decomposing the differences of mortality rates to evaluate the contribution of population aging to dementia mortality. RESULTS: The population composition ratios of aged ≥60 and ≥65 in 2023 were 25.70% and 20.24%, respectively; The number of dementia deaths from 2004 to 2023 was 24 014, and the average age of death caused by dementia increased from 79.74 ± 11.20 years old to 84.13 ± 8.49 years old. Dementia death age rose significantly over time, varying by gender. The crude mortality rate increased from 14.67/100 000 in 2004 to 21.55/100 000 in 2023, but the standardized mortality rate decreased from 9.16/100 000 in 2004 to 5.91/100 000 in 2023; The increase in the crude mortality rate of residents in 2023 was 213.66% attributed to the contribution rate of population aging. CONCLUSIONS: The overall crude mortality rate of dementia among residents in Suzhou is still on the rise, and population aging is a key factor.