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Mediating role of instrumental activities of daily living ability on cognitive function of older adults living alone: A 4-year longitudinal study from the Kasama study

The aim of this study was to clarify the effect of living alone on the cognitive function of older people and the mediating effect of instrumental activities of daily living (IADL) ability. The data for a final sample of 3276 participants aged 65 years and above who did not require long-term care at...

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Autores principales: Fujii, Keisuke, Fujii, Yuya, Kitano, Naruki, Sato, Ayane, Hotta, Kazushi, Okura, Tomohiro
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Lippincott Williams & Wilkins 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8500616/
https://www.ncbi.nlm.nih.gov/pubmed/34622849
http://dx.doi.org/10.1097/MD.0000000000027416
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author Fujii, Keisuke
Fujii, Yuya
Kitano, Naruki
Sato, Ayane
Hotta, Kazushi
Okura, Tomohiro
author_facet Fujii, Keisuke
Fujii, Yuya
Kitano, Naruki
Sato, Ayane
Hotta, Kazushi
Okura, Tomohiro
author_sort Fujii, Keisuke
collection PubMed
description The aim of this study was to clarify the effect of living alone on the cognitive function of older people and the mediating effect of instrumental activities of daily living (IADL) ability. The data for a final sample of 3276 participants aged 65 years and above who did not require long-term care at the baseline were used from a 4-year prospective cohort study conducted in Kasama City, Japan. Demographic data including age, sex, and depression at baseline were used as covariates. The Kihon checklist evaluated the IADL ability at baseline and cognitive function at follow-up. The characteristics of those living alone and with others were compared using the student t test and χ(2) test. The effect of living alone on cognitive function was analyzed using logistic regression analysis. Mediation analyses determined the mediating effects of IADL. A total of 325 participants were living alone; they were significantly older than those living with others, more likely to be female, not provide emotional support, and have low physical function, more severe depression, and lower IADL disability. Living alone had a significantly lower risk of cognitive decline at follow-up than living with others. The mediation analysis revealed that IADL disability at follow-up was significantly associated with cognitive decline. Thus, greater IADL ability decreased cognitive decline risk. Older people living alone had a significantly lower risk of cognitive decline, and cognitive function significantly mediated IADL ability. Health support for enhancing IADL abilities may help older people living alone maintain good cognitive function.
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spelling pubmed-85006162021-10-12 Mediating role of instrumental activities of daily living ability on cognitive function of older adults living alone: A 4-year longitudinal study from the Kasama study Fujii, Keisuke Fujii, Yuya Kitano, Naruki Sato, Ayane Hotta, Kazushi Okura, Tomohiro Medicine (Baltimore) 4600 The aim of this study was to clarify the effect of living alone on the cognitive function of older people and the mediating effect of instrumental activities of daily living (IADL) ability. The data for a final sample of 3276 participants aged 65 years and above who did not require long-term care at the baseline were used from a 4-year prospective cohort study conducted in Kasama City, Japan. Demographic data including age, sex, and depression at baseline were used as covariates. The Kihon checklist evaluated the IADL ability at baseline and cognitive function at follow-up. The characteristics of those living alone and with others were compared using the student t test and χ(2) test. The effect of living alone on cognitive function was analyzed using logistic regression analysis. Mediation analyses determined the mediating effects of IADL. A total of 325 participants were living alone; they were significantly older than those living with others, more likely to be female, not provide emotional support, and have low physical function, more severe depression, and lower IADL disability. Living alone had a significantly lower risk of cognitive decline at follow-up than living with others. The mediation analysis revealed that IADL disability at follow-up was significantly associated with cognitive decline. Thus, greater IADL ability decreased cognitive decline risk. Older people living alone had a significantly lower risk of cognitive decline, and cognitive function significantly mediated IADL ability. Health support for enhancing IADL abilities may help older people living alone maintain good cognitive function. Lippincott Williams & Wilkins 2021-10-08 /pmc/articles/PMC8500616/ /pubmed/34622849 http://dx.doi.org/10.1097/MD.0000000000027416 Text en Copyright © 2021 the Author(s). Published by Wolters Kluwer Health, Inc. https://creativecommons.org/licenses/by-nc/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution-Non Commercial License 4.0 (CCBY-NC), where it is permissible to download, share, remix, transform, and buildup the work provided it is properly cited. The work cannot be used commercially without permission from the journal. http://creativecommons.org/licenses/by-nc/4.0 (https://creativecommons.org/licenses/by-nc/4.0/)
spellingShingle 4600
Fujii, Keisuke
Fujii, Yuya
Kitano, Naruki
Sato, Ayane
Hotta, Kazushi
Okura, Tomohiro
Mediating role of instrumental activities of daily living ability on cognitive function of older adults living alone: A 4-year longitudinal study from the Kasama study
title Mediating role of instrumental activities of daily living ability on cognitive function of older adults living alone: A 4-year longitudinal study from the Kasama study
title_full Mediating role of instrumental activities of daily living ability on cognitive function of older adults living alone: A 4-year longitudinal study from the Kasama study
title_fullStr Mediating role of instrumental activities of daily living ability on cognitive function of older adults living alone: A 4-year longitudinal study from the Kasama study
title_full_unstemmed Mediating role of instrumental activities of daily living ability on cognitive function of older adults living alone: A 4-year longitudinal study from the Kasama study
title_short Mediating role of instrumental activities of daily living ability on cognitive function of older adults living alone: A 4-year longitudinal study from the Kasama study
title_sort mediating role of instrumental activities of daily living ability on cognitive function of older adults living alone: a 4-year longitudinal study from the kasama study
topic 4600
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8500616/
https://www.ncbi.nlm.nih.gov/pubmed/34622849
http://dx.doi.org/10.1097/MD.0000000000027416
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