{"doi":"10.1016/j.tjpad.2025.100370","title":"Trends in cognitive impairment among older adults in China from 2002 to 2022: Evaluating the impact of the COVID-19 pandemic","abstract":"BACKGROUND: Cognitive impairment is a growing public health concern, particularly in aging populations. While trends in CI prevalence in China were studied up to 2018, no previous research has explored how the COVID-19 pandemic has affected these trends. OBJECTIVES: This study aims to extend the analysis to 2022, examining the impact of the pandemic on cognitive impairment prevalence. PARTICIPANTS: The Chinese Longitudinal Healthy Longevity Survey (CLHLS) data across multiple waves (2002 to 2022) was used (n=64,872). MEASUREMENTS: Cognitive impairment was assessed using a Chinese version of the Mini-Mental State Examination (MMSE). The rural/urban-sex-single age-specific prevalence of cognitive impairment across different waves were estimated using the DemoRates R package. Cognitive impairment trends before and after the onset of the COVID-19 pandemic were compared to identify any significant changes. RESULTS: In 2018 and previous waves, an average of 16,191 participants per wave were surveyed (four waves), with a cognitive impairment prevalence of 4.3%. In 2022, post-COVID-19, the survey included 14,022 participants and showed a significant increase in CI prevalence to 6.8%. The observed trends were independent of gender, age group, and residential environment (P-trend < 0.001). However, a significant decrease in mean calf circumference, increase in proportion of overweight participants, and increases in daily fruit and vegetable intake and regular physical activity were notable after the pandemic. CONCLUSION: The study suggests that the COVID-19 pandemic may have contributed to the observed increase in cognitive impairment prevalence in China, underscoring the importance of further research into the long-term cognitive effects of global health crises. These findings highlight the need to strengthen healthcare systems to support cognitive health in an aging population, while considering both pandemic-related and ongoing factors in the management of cognitive impairment.","journal":"The Journal of Prevention of Alzheimer s Disease","year":2025,"id":547030,"datarank":0.0,"base_score":0.0,"endowment":0.0,"self_citation_contribution":0.0,"citation_network_contribution":0.0,"self_endowment_contribution":0.0,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":1,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.8976,"is_data_producer":false,"deposit_databanks":null,"is_oa":true,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2025-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":1048661,"name":"Kaisy Xinhong Ye","orcid":"0000-0002-6924-9213","position":1,"is_corresponding":false},{"id":610038,"name":"Qiushi Feng","orcid":"0000-0002-3572-4442","position":2,"is_corresponding":false},{"id":1439050,"name":"Yan Mo","orcid":"0000-0002-5469-5691","position":3,"is_corresponding":false},{"id":1439051,"name":"Zuqi Cai","orcid":"0009-0000-5577-2663","position":4,"is_corresponding":false},{"id":437836,"name":"Chunbo Li","orcid":"0000-0002-3387-4439","position":5,"is_corresponding":false},{"id":284702,"name":"Jin‐Tai Yu","orcid":"0000-0002-7686-0547","position":6,"is_corresponding":false},{"id":1236883,"name":"Bin Li","orcid":"0000-0003-1692-8957","position":7,"is_corresponding":false},{"id":264262,"name":"Andrea B. Maier","orcid":"0000-0001-7206-1724","position":8,"is_corresponding":false},{"id":39344,"name":"Yi Zeng","orcid":"0000-0001-8354-2945","position":9,"is_corresponding":false},{"id":1439471,"name":"Zhenglian Wang","orcid":null,"position":10,"is_corresponding":false},{"id":108396,"name":"Lei Feng","orcid":"0000-0002-4414-9910","position":0,"is_corresponding":true}],"reference_count":29,"raw_metadata":null,"created_at":"2026-07-19T02:53:36.567932Z","pmid":"40973521","pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}