• Psychogeriatrics · Dec 2011

    Reliability and validity of the Japanese version of the Agitated Behaviour in Dementia Scale in Alzheimer's disease: three dimensions of agitated behaviour in dementia.

    • Katsuyoshi Torii, Shutaro Nakaaki, Koichi Banno, Yoshie Murata, Junko Sato, Hiroshi Tatsumi, Katsuo Yamanaka, Jin Narumoto, Masaru Mimura, Tatsuo Akechi, and Toshi A Furukawa.
    • Department of Psychiatry and Cognitive-Behavioural Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
    • Psychogeriatrics. 2011 Dec 1; 11 (4): 212-20.

    BackgroundAgitation in dementia seriously affects not only patients' quality of life (QOL), but also caregivers' QOL. Thus, an appropriate assessment of agitated behaviour in dementia is needed for clinical management. We developed the Japanese version of the Agitated Behaviour in Dementia scale (ABID), examined its reliability and validity, and carried out its factor analysis to elucidate its factor structure.MethodsThe Japanese version of the ABID was given caregivers of 149 Japanese patients with Alzheimer's disease (AD). The internal-consistency, test-retest reliability and concurrent validity of the Japanese version of the ABID were then examined. A factor analysis was used to examine the agitated behavioural dimensions underlying ABID.ResultsThe Japanese version of the ABID showed an excellent internal reliability for both frequency ratings (Cronbach's α= 0.89) and reaction ratings (Cronbach's α= 0.92), and an excellent test-retest reliability for both frequency ratings and reaction ratings. The total score for the frequency ratings of the ABID was significantly associated with the Cohen-Mansfield Agitation Inventory (CMAI), and the total score for the reaction ratings of the ABID was significantly associated with the Zarit Burden Interview. The factor analysis showed three subtypes: physically agitated behaviour, verbally agitated behaviour and psychosis symptoms.ConclusionsThe Japanese version of the ABID promises to be useful for assessing agitated behaviour in patients with AD. Importantly, understanding these subtypes of agitated behaviour might have implications for individualized treatment plans.© 2011 The Authors. Psychogeriatrics © 2011 Japanese Psychogeriatric Society.

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