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The development and validation of a dementia behavior disturbance inventory

Published online by Cambridge University Press:  27 September 2005

Li-Yu Tang ,
Ping-Keung Yip ,
En-Chang Wu  and
Kai-Kuen Leung
Li-Yu Tang
Affiliation:
College of Nursing, National Yang Ming University, Taiwan, R.O.C.
Ping-Keung Yip
Affiliation:
Department of Neurology, National Taiwan University Hospital and National Taiwan University, College of Medicine, Taiwan, R.O.C.
En-Chang Wu
Affiliation:
School of Psychology, National Taiwan University College of Science, Taiwan, R.O.C.
Kai-Kuen Leung
Affiliation:
Department of Family Medicine, National Taiwan University Hospital and National Taiwan University, College of Medicine, Taiwan, R.O.C.
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Abstract

Objective: To develop an instrument that measures observable problematic behaviors in patients with dementia.

Methodology: We used focus group interviews to identify the problematic behaviors of patients with dementia. Eighty-two behaviors grouped into 12 domains were generated from the data collected from five different focus groups. After conducting a content validation process, a 72-item Dementia Behavior Disturbance Inventory (DBDI) rated by a frequency and a disturbance scale was formed. The DBDI was administered to 200 institutionalized elderly patients with dementia by formal caregivers for psychometric evaluation.

Results: Inter-item correlation of items in each domain was performed for item reduction. Forty-eight items remained after this procedure. Exploratory factor analysis obtained nine factors that explained 59.2% and 59.6% of the total variance in the frequency and disturbance scales, respectively. Cronbach's α of the entire 48-item frequency and disturbance scales was 0.88 and 0.91, respectively. Most of the factors had acceptable internal consistency reliability. Test–re-test reliability coefficients of the frequency and disturbance scales were 0.78 and 0.64, respectively. The DBDI was weakly but positively related to functions of daily activities and ambulation.

Conclusion: The DBDI demonstrates promising psychometrical properties as an instrument to assess problematic behaviors in elderly people with dementia.

Keywords

Alzheimer's diseasedementiabehavioral problemscaregiver
Type
Research Article
Information
International Psychogeriatrics , Volume 18 , Issue 1 , March 2006 , pp. 95 - 110
Copyright
© International Psychogeriatric Association 2005

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