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Japanese Occupational Therapy Research Volume 30, Issue 5 （October 2011）

作業療法 30巻5号（2011年10月発行）

Japanese English

◆短報

地域在住高齢者の認知機能低下に関するスクリーニング検査項目の検討 The potential of brief cognitive assessment screening to discriminate cognitive functional decline 木村大介 ¹ , 竹田徳則 ¹ , 太田崇 ² Daisuke Kimura ¹ , Tokunori Takeda ¹ , Takashi Ota ² ¹星城大学リハビリテーション学部リハビリテーション学科作業療法学専攻 ²てっく訪問看護ステーション ¹Division of Occupational Therapy, Faculty of Care and Rehabilitation, Seijoh University ²Tekku Home-Visit Nursing Station キーワード：介護予防 , 認知機能 , （スクリーニング） , Preventive long-term care , Cognitive function , Screening Keyword: 介護予防 , 認知機能 , （スクリーニング） , Preventive long-term care , Cognitive function , Screening pp.626-630

発行日 2011年10月15日 Published Date 2011/10/15

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要旨：本研究の目的は，認知機能低下を簡便にスクリーニングできる検査項目とそのカットオフ値を示すことである．介護予防地域支援事業としての一次予防事業の参加ボランティア66名（平均年齢66.1歳，男性16名，女性50名）にMini-Mental State Examination（MMSE）と改訂長谷川式簡易知能評価スケール（HDS-R）を実施した．分析は，認知機能低下の有無を状態変数，MMSE，HDS-Rの下位項目を検定変数とし，判別分析を行い，抽出項目のROC曲線からカットオフ値と感度，特異度を求めた．その結果，検査項目としてMMSEの3単語遅延再生課題（カットオフ1問正答，感度97.9％，特異度82.4％）が抽出された．

　Background: Early detection of cognitive decline for the elderly may effectively prolong healthy life. Cognitive assessment is essential for early detection of cognitive decline; however, brief procedure and easily interpretable results are required.

　Atm: The aim of this study was to investigate whether brief cognitive assessment aided prediction of cognitive decline in patients with cognitive decline and in healthy subjects.

　Partcipants: The participants were 66 community dwelling elderly (16 men and 50 women); these individuals were not diagnosed with dementia. Their mean (SD) age was 66.1 (6.9) years.

　Methods: Cognitive decline was evaluated using Mini-Mental State Examination (MMSE) and the revised version of Hasegawa's Dementia Scale (HDS-R). Forward stepwise linear discriminant function analyses were used to examine the discriminative ability of the subscale scores of MMSE and HDS-R, and the selected subscale scores of MMSE and HDS-R were evaluated using receiver operating characteristic (ROC) analysis.

　Results: After the forward linear discriminant function analyses, 3-word-recall of MMSE was automatically selected. The optimal cut-off score for the 3-word-recall MMSE test was determined as 1/2; the sensitivity and specificity for this score were 97.9% and 82.4%, respectively.

　Conclusion: These data support the use of the 3-word-recall MMSE test as a potential screening test for cognitive function decline in the community-dwelling elderly.