ArticleFrontiers in aging neuroscience2021
Associations Between Cognitive Function, Depression, and Olfactory Function in Elderly People With Dementia in Korea.
Article in Frontiers in aging neuroscience, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
13 citing papers in PubMed, 1 synthesis or guideline pooled it, 16 citations in OpenAlex.
- Olfaction and Executive Cognitive Performance: A Systematic Review.Frontiers in psychology · 2022Pooled it
- Quantification of identifying cognitive impairment using olfactory-stimulated functional near-infrared spectroscopy with machine learning: a post hoc analysis of a diagnostic trial and validation of an external additional trial.Alzheimer's research & therapy · 2023Trial
- Olfactory impairment associated with cognitive decline: findings from cognitive domain assessments among older adults in West Jakarta, Indonesia.BMC geriatrics · 2026Article
- Assessment and behavioural management options for older adults with declined smell and taste functions: a scoping review.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2026Article
- The microbiota-metabolite-immune axis in the olfactory cleft microenvironment: mechanisms and therapeutic implications for dysbiosis-driven olfactory dysfunction in chronic rhinosinusitis.Frontiers in immunology · 2026Review
- Interaction Between Smoking and Olfactory Function on Frailty: A Population-Based Cross-Sectional Study.Health science reports · 2025Article
- Aging-associated sensory decline and Alzheimer's disease.Molecular neurodegeneration · 2024Review
- Article
- Correlation of Molecular Status with Preoperative Olfactory Function in Olfactory Groove Meningioma.Cancers · 2024Article
- Association Between Olfactory Dysfunction and Cognitive Impairment in Dementia-Free Older Adults: A Prospective Cohort Study in Taiwan.Journal of Alzheimer's disease : JAD · 2023Article
- Odor familiarity and improvement of olfactory identification test in Chinese population.Frontiers in psychology · 2023Article
- A potential biomarker of cognitive impairment: The olfactory dysfunction and its genes expression.Annals of clinical and translational neurology · 2022Article
- Interactive Effects of Agitation and Cognitive Impairment on Odor Identification in Patients With Late-Life Depression.Frontiers in psychiatry · 2022Article
Corrections and comments
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Authors and funding
3 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Early detection is important for delaying or preventing cognitive impairment. Since olfactory dysfunction and depression are common symptoms of cognitive dysfunction, they may serve as measurable risk indicators. This study was designed to identify the relationship between olfaction, depression, and each domain of cognitive function in elderly dementia patients in South Korea. Study participants were 108 patients who visited the outpatient clinic between March and September 2019. More significant impairment of olfactory function was found in those with mild (7.48 ± 1.28) or moderate (7.37 ± 2.22) test scores of the Expanded Clinical Dementia Rating (CDR) scale than in those with questionable scores (20.58 ± 6.18). The language domain of cognitive function, age, and education level showed 39.2% explanatory power for olfactory function (
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.