A comprehensive approach to psychometric assessment of instruments used in dementia educational interventions for health professionals: A cross-sectional study

Yao Wang, Dongxia Xiao, Guoping He

    Research output: Contribution to journalArticlepeer-review

    8 Citations (Scopus)

    Abstract

    Background: Suboptimal care for people with dementia in hospital settings has been reported and is attributed to the lack of knowledge and inadequate attitudes in dementia care among health professionals. Educational interventions have been widely used to improve care outcomes; however, Chinese-language instruments used in dementia educational interventions for health professionals are lacking. Objectives: The aims of this study were to select, translate and evaluate instruments used in dementia educational interventions for Chinese health professionals in acute-care hospitals. Design: A cross-sectional study design was used. Participants and setting: A modified stratified random sampling was used to recruit 442 participants from different levels of hospitals in Changsha, China. Methods: Dementia care competence was used as a framework for the selection and evaluation of Alzheimer's Disease Knowledge Scale and Dementia Care Attitudes Scale for health professionals in the study. These two scales were translated into Chinese using forward and back translation method. Content validity, test-retest reliability and internal consistency were assessed. Construct validity was tested using exploratory factor analysis. Known-group validity was established by comparing scores of Alzheimer's Disease Knowledge Scale and Dementia Care Attitudes Scale in two sub-groups. A person-centred care scale was utilised as a gold standard to establish concurrent validity of these two scales. Results: Results demonstrated acceptable content validity, internal consistency, test-retest reliability and concurrent validity. Exploratory factor analysis presented a single-factor structure of the Chinese Alzheimer's Disease Knowledge Scale and a two-factor structure of the Chinese Dementia Care Attitudes Scale, supporting the conceptual dimensions of the original scales. The Chinese Alzheimer's Disease Knowledge Scale and Chinese Dementia Care Attitudes Scale demonstrated known-group validity evidenced by significantly higher scores identified from the sub-group with a longer work experience compared to those in the sub-group with less work experience. Conclusions: The use of dementia care competence as a framework to inform the selection and evaluation of instruments used in dementia educational interventions for health professionals has wide applicability in other areas. The results support that Chinese Alzheimer's Disease Knowledge Scale and Chinese Dementia Care Attitudes Scale are reliable and valid instruments for health professionals to use in acute-care settings.

    Original languageEnglish
    Pages (from-to)568-577
    Number of pages10
    JournalInternational Journal of Nursing Studies
    Volume52
    Issue number2
    DOIs
    Publication statusPublished - 1 Feb 2015

    Keywords

    • Dementia care competence
    • Dementia educational interventions
    • Health professionals
    • Instrument validation
    • Translation

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