{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,1]],"date-time":"2025-10-01T16:21:09Z","timestamp":1759335669541},"reference-count":34,"publisher":"Korean Neuropsychiatric Association","issue":"10","license":[{"start":{"date-parts":[[2020,10,16]],"date-time":"2020-10-16T00:00:00Z","timestamp":1602806400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"name":"Chung-Ang University Hospital"},{"DOI":"10.13039\/501100002460","name":"Chung-Ang University","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100002460","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["psychiatryinvestigation.org"],"crossmark-restriction":true},"short-container-title":["Psychiatry Investig"],"published-print":{"date-parts":[[2020,10,25]]},"abstract":"<jats:p>Objective We aimed to find the optimal cut-off scores for screening of odor detection threshold, odor discrimination, and odor identification tests for detection of mild cognitive impairment (MCI) and dementia in Korean elderly.Methods A total of 195 elderly people were divided into three groups: the normal cognition (NC), MCI, and dementia groups. All participants underwent neurocognitive and olfactory function tests. We used k-means cluster analysis and receiver operating characteristic (ROC) analysis to identify the most appropriate cut-off value.Results To distinguish the MCI from NC groups, odor identification [area under the curve (AUC)=0.670, p&lt;0.007] with a cut-off point of 7 showed greater validity for screening (sensitivity\/specificity=0.462\/0.837) than did other olfactory function tests. To distinguish the MCI and dementia from NC as well, odor identification (AUC=0.817, p=0.002) with a cut-off point of 7 showed the highest validity for screening (0.785\/0.654). To distinguish MCI from AD, an odor detection threshold (AUC=0.722, p=0.001) with a cut-off point of 2 showed the highest validity for screening (0.785\/0.654).Conclusion Olfactory function tests may be a useful screening tool for cognitive decline before clinical symptoms of dementia have completely developed. This tool can be used as a supplementary tool to enhance the sensitivity of traditional cognitive tests to screen for dementia.<\/jats:p>","DOI":"10.30773\/pi.2020.0203","type":"journal-article","created":{"date-parts":[[2020,10,16]],"date-time":"2020-10-16T02:38:28Z","timestamp":1602815908000},"page":"1021-1030","update-policy":"http:\/\/dx.doi.org\/10.30773\/crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Cut-Off Scores of an Olfactory Function Test for Mild Cognitive Impairment and Dementia"],"prefix":"10.30773","volume":"17","author":[{"given":"Hye Ri","family":"Kim","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sun Mi","family":"Kim","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wonshik","family":"Seong","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hyun 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