{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,27]],"date-time":"2026-06-27T23:31:40Z","timestamp":1782603100238,"version":"3.54.5"},"reference-count":14,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2018,11,22]],"date-time":"2018-11-22T00:00:00Z","timestamp":1542844800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Geriatrics Gerontology Int"],"published-print":{"date-parts":[[2019,1]]},"abstract":"<jats:sec><jats:title>Aim<\/jats:title><jats:p>The present study aimed to assess the interrater reliability and construct the validity of a novel, convenient informant\u2010based Alzheimer's disease assessment scale to prepare its final version.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>For the assessment, site investigators, co\u2010medicals and, if available, medical staff other than doctors or co\u2010medicals interviewed study informants to assess individuals using this scale. We then analyzed the interrater reliability and construct validity using factor analysis and item response characteristics.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>In this study, 427 eligible participants were enrolled. We first examined the interrater reliability, and found that the lower limit of the confidence interval of each item was never &lt;0.4 (except for the item \u201cdelusion of theft\u201d). After deleting this item, the 14 items of this scale were organized into three domains (activities of daily living, behavioral and psychological symptoms of dementia, and cognitive function) through factor analysis. After discussion of the similarity of two items and their integration into one item, we confirmed that the final version of the 13\u2010item scale showed almost the same degree of interrater reliability and construct validity as the former version of this scale.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The final version of this novel Alzheimer's disease assessment scale had high interrater reliability and construct validity. We named it the ABC (activities of daily living, behavioral and psychological symptoms of dementia, and cognitive function) Dementia Scale. Further studies on its validation are required. <jats:bold>Geriatr Gerontol Int 2019; 19: 18\u201323<\/jats:bold>.<\/jats:p><\/jats:sec>","DOI":"10.1111\/ggi.13552","type":"journal-article","created":{"date-parts":[[2018,11,23]],"date-time":"2018-11-23T07:07:44Z","timestamp":1542956864000},"page":"18-23","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["Development of a novel convenient Alzheimer's disease assessment scale, the ABC Dementia Scale, using item response theory"],"prefix":"10.1111","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4353-3424","authenticated-orcid":false,"given":"Yumi","family":"Umeda\u2010Kameyama","sequence":"first","affiliation":[{"name":"Department of Geriatric Medicine, Graduate School of Medicine The University of Tokyo  Tokyo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takahiro","family":"Mori","sequence":"additional","affiliation":[{"name":"Department of Neuropsychiatry, Faculty of Medicine Kagawa University  Kagawa Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kenji","family":"Wada\u2010Isoe","sequence":"additional","affiliation":[{"name":"Division of Neurology, Department of Brain and Neurosciences, Faculty of Medicine Tottori University  Tottori Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takashi","family":"Kikuchi","sequence":"additional","affiliation":[{"name":"Translational Research Informatics Center, Foundation for Biomedical Research and Innovation  Hyogo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shinsuke","family":"Kojima","sequence":"additional","affiliation":[{"name":"Translational Research Informatics Center, Foundation for Biomedical Research and Innovation  Hyogo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tatsuo","family":"Kagimura","sequence":"additional","affiliation":[{"name":"Translational Research Informatics Center, Foundation for Biomedical Research and Innovation  Hyogo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Akinori","family":"Ueki","sequence":"additional","affiliation":[{"name":"Ueki Dementia and Geriatric Psychiatry Clinic  Hyogo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Toshiyuki","family":"Watabe","sequence":"additional","affiliation":[{"name":"Watabe Clinic  Yamagata Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chiaki","family":"Kudoh","sequence":"additional","affiliation":[{"name":"KUDOH CHIAKI Clinic for Neurosurgery &amp; Neurology  Tokyo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Masahiro","family":"Akishita","sequence":"additional","affiliation":[{"name":"Department of Geriatric Medicine, Graduate School of Medicine The University of Tokyo  Tokyo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yu","family":"Nakamura","sequence":"additional","affiliation":[{"name":"Department of Neuropsychiatry, Faculty of Medicine Kagawa University  Kagawa Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"name":"and ABC dementia scale study group","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2018,11,22]]},"reference":[{"key":"e_1_2_7_2_1","volume-title":"National Dementia Strategy (New Orange Plan)"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/0022-3956(75)90026-6"},{"key":"e_1_2_7_4_1","first-page":"1339","article-title":"Development of the revised version of Hasegawa's dementia scale (HDS\u2010R)","volume":"2","author":"Kato S","year":"1991","journal-title":"Jpn J Geriatr Psychiatry"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1159\/000084558"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1097\/01.wad.0000213853.04861.02"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.5014\/ajot.53.5.471"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.1186\/alzrt48"},{"key":"e_1_2_7_9_1","doi-asserted-by":"crossref","first-page":"27","DOI":"10.1186\/alzrt89","article-title":"Validation of the relevant outcome scale for Alzheimer's disease: a novel multidomain assessment for daily medical practice","volume":"3","author":"Holthoff VA","year":"2011","journal-title":"Alzheimers Res Ther"},{"key":"e_1_2_7_10_1","doi-asserted-by":"publisher","DOI":"10.1002\/gps.3805"},{"key":"e_1_2_7_11_1","volume-title":"Diagnostic and Statistical Manual of Mental Disorders","year":"2000"},{"key":"e_1_2_7_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jalz.2011.03.005"},{"key":"e_1_2_7_13_1","doi-asserted-by":"publisher","DOI":"10.1212\/WNL.34.7.939"},{"key":"e_1_2_7_14_1","volume-title":"Practical Statistics for Medical Research","author":"Altman DG","year":"1999"},{"key":"e_1_2_7_15_1","doi-asserted-by":"publisher","DOI":"10.1192\/bjp.140.6.566"}],"container-title":["Geriatrics &amp; 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