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Brief summary: During the COVID-19 pandemic, older people with multimorbidity suffered an accelerated cognitive decline and elevated dementia risk, highlighting actions to assist the vulnerable population to tackle neurocognitive challenges.
Funding sources: The present study was supported by the National Natural Science Foundation of China (project no. 81974490), the Non-profit Central Research Institute Fund of Chinese Academy of Medical Sciences (2021-RC330-001) and 2019 Irma and Paul Milstein Program for Senior Health Research Project. The funder had no role in the study design; the collection, analysis, and interpretation of data; the writing of the manuscript; or the decision to submit the article for publication.
Conflicts of interest: None.
Author contributions: Chenglong Li contributed to the formal analysis and writing the original draft. Rong Hua and Darui Gao contributed to data curation and manuscript editing efforts. Fanfan Zheng and Wuxiang Xie conceptualized the study design and funding acquisition, as well as manuscript reviewing and editing efforts. All authors had full access to the data in the study and can take responsibility for the integrity of the data and the accuracy of the data analysis. Fanfan Zheng and Wuxiang Xie are the guarantors. The corresponding author attests that all listed authors meet authorship criteria and that no others meeting the criteria have been omitted.
Data availability statement: Original survey dataset from the HRS is freely available to all bonafide researchers. Access to data can be obtained by visiting their websites (https://hrs.isr.umich.edu/about).
