Utility of olfactory identification test for screening of cognitive dysfunction in community-dwelling older adults
Background There is a need for a large-scale screening test that can be used to detect dementia in older individuals at an early stage. Olfactory identification deficits have been shown to occur in the early stages of dementia, indicating their usefulness in screening tests. This study investigated...
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PeerJ Inc.
2021-12-01
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| Online Access: | https://peerj.com/articles/12656.pdf |
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| author | Satoshi Nogi Kentaro Uchida Jumpei Maruta Hideo Kurozumi Satoshi Akada Masatsugu Shiba Koki Inoue |
| author_facet | Satoshi Nogi Kentaro Uchida Jumpei Maruta Hideo Kurozumi Satoshi Akada Masatsugu Shiba Koki Inoue |
| author_sort | Satoshi Nogi |
| collection | DOAJ |
| description | Background There is a need for a large-scale screening test that can be used to detect dementia in older individuals at an early stage. Olfactory identification deficits have been shown to occur in the early stages of dementia, indicating their usefulness in screening tests. This study investigated the utility of an olfactory identification test as a screening test for mild cognitive dysfunction in community-dwelling older people. Methods The subjects were city-dwelling individuals aged over 65 years but under 85 years who had not been diagnosed with dementia or mild cognitive impairment. The Japanese version of the Mild Cognitive Impairment Screen was used to evaluate cognitive function. Based on the results, the subjects were divided into two groups: healthy group and cognitively impaired group. Olfactory identification abilities based on the Japanese version of the University of Pennsylvania Smell Identification Test were compared between the groups. Results There were 182 participants in total: 77 in the healthy group and 105 in the cognitively impaired group. The mean olfactory identification test score of the cognitively impaired group was significantly lower than that of the healthy group. The cognitive impairment test score was significantly correlated with the olfactory identification test score. Conclusions Cross-sectional olfactory identification deficits at baseline in community-dwelling older adults reflected cognitive dysfunction. Assessing olfactory identification ability might be useful as a screening test for mild cognitive dysfunction in community-dwelling older people. |
| first_indexed | 2024-03-09T08:02:08Z |
| format | Article |
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| language | English |
| last_indexed | 2024-03-09T08:02:08Z |
| publishDate | 2021-12-01 |
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| spelling | doaj.art-fbe9ab1c479745c1b58478b69625cc3d2023-12-03T00:41:04ZengPeerJ Inc.PeerJ2167-83592021-12-019e1265610.7717/peerj.12656Utility of olfactory identification test for screening of cognitive dysfunction in community-dwelling older adultsSatoshi Nogi0Kentaro Uchida1Jumpei Maruta2Hideo Kurozumi3Satoshi Akada4Masatsugu Shiba5Koki Inoue6Neuropsychiatry, Osaka City University Graduate School of Medicine, Osaka, JapanNeuropsychiatry, Osaka City University Graduate School of Medicine, Osaka, JapanNeuropsychiatry, Osaka City University Graduate School of Medicine, Osaka, JapanNeuropsychiatry, Osaka City University Graduate School of Medicine, Osaka, JapanNeuropsychiatry, Osaka City University Graduate School of Medicine, Osaka, JapanMedical Statistics, Osaka City University Graduate School of Medicine and Faculty of Medicine, Osaka, JapanNeuropsychiatry, Osaka City University Graduate School of Medicine, Osaka, JapanBackground There is a need for a large-scale screening test that can be used to detect dementia in older individuals at an early stage. Olfactory identification deficits have been shown to occur in the early stages of dementia, indicating their usefulness in screening tests. This study investigated the utility of an olfactory identification test as a screening test for mild cognitive dysfunction in community-dwelling older people. Methods The subjects were city-dwelling individuals aged over 65 years but under 85 years who had not been diagnosed with dementia or mild cognitive impairment. The Japanese version of the Mild Cognitive Impairment Screen was used to evaluate cognitive function. Based on the results, the subjects were divided into two groups: healthy group and cognitively impaired group. Olfactory identification abilities based on the Japanese version of the University of Pennsylvania Smell Identification Test were compared between the groups. Results There were 182 participants in total: 77 in the healthy group and 105 in the cognitively impaired group. The mean olfactory identification test score of the cognitively impaired group was significantly lower than that of the healthy group. The cognitive impairment test score was significantly correlated with the olfactory identification test score. Conclusions Cross-sectional olfactory identification deficits at baseline in community-dwelling older adults reflected cognitive dysfunction. Assessing olfactory identification ability might be useful as a screening test for mild cognitive dysfunction in community-dwelling older people.https://peerj.com/articles/12656.pdfDementiaEarly diagnosisMass screeningOlfaction disordersOlfactory identificationCommunity-dwelling older adults |
| spellingShingle | Satoshi Nogi Kentaro Uchida Jumpei Maruta Hideo Kurozumi Satoshi Akada Masatsugu Shiba Koki Inoue Utility of olfactory identification test for screening of cognitive dysfunction in community-dwelling older adults PeerJ Dementia Early diagnosis Mass screening Olfaction disorders Olfactory identification Community-dwelling older adults |
| title | Utility of olfactory identification test for screening of cognitive dysfunction in community-dwelling older adults |
| title_full | Utility of olfactory identification test for screening of cognitive dysfunction in community-dwelling older adults |
| title_fullStr | Utility of olfactory identification test for screening of cognitive dysfunction in community-dwelling older adults |
| title_full_unstemmed | Utility of olfactory identification test for screening of cognitive dysfunction in community-dwelling older adults |
| title_short | Utility of olfactory identification test for screening of cognitive dysfunction in community-dwelling older adults |
| title_sort | utility of olfactory identification test for screening of cognitive dysfunction in community dwelling older adults |
| topic | Dementia Early diagnosis Mass screening Olfaction disorders Olfactory identification Community-dwelling older adults |
| url | https://peerj.com/articles/12656.pdf |
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