Previous studies on the prevalence of multimorbidity and its patterns may not be comparable due to large heterogeneity in the study samples, definitions, eligible diseases, and analytical methods. Therefore, studies focused on multimorbidity are being increasingly emphasized. The challenges require a radical shift from disease-specific research to a more holistic view of our health. Multimorbidity is associated with impaired functional ability, higher healthcare costs, poorer quality of life and an increased mortality risk, challenging healthcare systems around the world. With an aging population, the number of people with multimorbidity (defined as the coexistence of two or more chronic diseases in the same person) is expected to rise at a rate of more than 1% per year by 2030 as the population ages. There will be 400 million Chinese citizens aged 65 or older by 2030. As one of the fastest-aging countries globally, China had 190.64 million people aged 65 or older in 2020, accounting for 13.5% of the total population. China is also facing many serious challenges related to aging. The global population is aging rapidly due to a combination of increased life expectancy and falling fertility. Guideline development, clinical management,and public intervention should target a group of diseases instead of a single condition. Multimorbidity is prevalent among older adults in Chinese. Logistic regression indicated that gender, age, marriage status, lifestyle (smoking status, drinking status, and physical activity), and socioeconomic status (household registration, education level, payment method of medical expenses) were the common predictors of multimorbidity for older adults, among which, being women, married, or engaged in physical activity was found to be a relative determinant as a protective factor for multimorbidity after the other covariates were controlled. The mean count of chronic diseases per participant was 2.14. The prevalence of multimorbidity was 63.46%. The prevalences of obesity, hypertension, diabetes, anemia, chronic kidney disease, hyperuricemia, dyslipidemia and fatty liver disease were 10.41%, 62.09%, 24.21%, 12.78%, 6.14%, 20.52%, 44.32%, and 33.25%, respectively. The Logistic analysis was adopted to explore the potential associated factors of multimorbidity.
Multimorbidity is defined as the presence of two or more clinically diagnosed or non self-reported chronic diseases among the eight chronic diseases surveyed in an individual.
This study was conducted based on the 2021 Shenzhen Healthy Ageing Research (SHARE), and involved analysis of 346,760 participants aged 65 or older.
This study aimed to investigate the prevalence of multimorbidity and its associated factors among the older population in China to propose policy recommendations for the management of chronic diseases in older adults.
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