Development and evaluation of a short version of the quality of life questionnaire for dementia

Seishi Terada, Etsuko Oshima, Chikako Ikeda, Satoshi Hayashi, Osamu Yokota, Yosuke Uchitomi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Background: There are many quality of life (QOL) instruments for evaluating dementia patients. The QOL questionnaire for Dementia (QOL-D) is one of such instruments and a validated objective measure of QOL for patients with dementia. It comprises 31 items encompassing six domains. However, with 31 items, its length is a disadvantage. The purpose of this study was to develop a short version of QOL-D (short QOL-D). Methods: We used data from two studies. The participants were 264 inpatients with dementia in the first sample and 395 outpatients at a memory clinic in the second sample. We used maximum likelihood factor analysis with promax rotation to reduce the number of items. Results: We produced a nine-item version of QOL-D (short QOL-D) with positive (six items) and negative (three items) dimensions. The correlation coefficients of short and total versions of QOL-D were 0.892-0.918 for total scores, 0.903-0.936 for positive dimension scores, and 0.788-0.837 for negative dimension scores. Total short QOL-D scores showed a significant correlation to the Geriatric Depression Scale score and the apathy score of the Neuropsychiatric Inventory. Conclusions: The short QOL-D produced results comparable with that of the full version. Reducing the number of items may make administration of the instrument easier.

Original languageEnglish
Pages (from-to)103-110
Number of pages8
JournalInternational Psychogeriatrics
Volume27
Issue number1
DOIs
Publication statusPublished - Jan 12 2015

Fingerprint

Dementia
Quality of Life
Apathy
Geriatrics
Statistical Factor Analysis
Surveys and Questionnaires
Inpatients
Outpatients
Depression
Equipment and Supplies

Keywords

  • dementia
  • factor analysis
  • health-related QOL
  • quality of life (QOL)

ASJC Scopus subject areas

  • Geriatrics and Gerontology
  • Psychiatry and Mental health
  • Gerontology
  • Clinical Psychology
  • Medicine(all)

Cite this

Development and evaluation of a short version of the quality of life questionnaire for dementia. / Terada, Seishi; Oshima, Etsuko; Ikeda, Chikako; Hayashi, Satoshi; Yokota, Osamu; Uchitomi, Yosuke.

In: International Psychogeriatrics, Vol. 27, No. 1, 12.01.2015, p. 103-110.

Research output: Contribution to journalArticle

Terada, Seishi ; Oshima, Etsuko ; Ikeda, Chikako ; Hayashi, Satoshi ; Yokota, Osamu ; Uchitomi, Yosuke. / Development and evaluation of a short version of the quality of life questionnaire for dementia. In: International Psychogeriatrics. 2015 ; Vol. 27, No. 1. pp. 103-110.
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