The reliability, validity, sensitivity, specificity and predictive values of the Chinese version of the Rowland Universal Dementia Assessment Scale

Chia Wei Chen, Hsin Chu, Chia Fen Tsai, Hui Ling Yang, Jui Chen Tsai, Min Huey Chung, Yuan Mei Liao, Mei ju Chi, Kuei Ru Chou

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Aims and objectives: The purpose of this study was to translate the Rowland Universal Dementia Assessment Scale into Chinese and to evaluate the psychometric properties (reliability and validity) and the diagnostic properties (sensitivity, specificity and predictive values) of the Chinese version of the Rowland Universal Dementia Assessment Scale. Background: The accurate detection of early dementia requires screening tools with favourable cross-cultural linguistic and appropriate sensitivity, specificity, and predictive values, particularly for Chinese-speaking populations. Design: This was a cross-sectional, descriptive study. Methods: Overall, 130 participants suspected to have cognitive impairment were enrolled in the study. A test-retest for determining reliability was scheduled four weeks after the initial test. Content validity was determined by five experts, whereas construct validity was established by using contrasted group technique. The participants' clinical diagnoses were used as the standard in calculating the sensitivity, specificity, positive predictive value and negative predictive value. Results: The study revealed that the Chinese version of the Rowland Universal Dementia Assessment Scale exhibited a test-retest reliability of 0·90, an internal consistency reliability of 0·71, an inter-rater reliability (kappa value) of 0·88 and a content validity index of 0·97. Both the patients and healthy contrast group exhibited significant differences in their cognitive ability. The optimal cut-off points for the Chinese version of the Rowland Universal Dementia Assessment Scale in the test for mild cognitive impairment and dementia were 24 and 22, respectively; moreover, for these two conditions, the sensitivities of the scale were 0·79 and 0·76, the specificities were 0·91 and 0·81, the areas under the curve were 0·85 and 0·78, the positive predictive values were 0·99 and 0·83 and the negative predictive values were 0·96 and 0·91 respectively. Conclusion: The Chinese version of the Rowland Universal Dementia Assessment Scale exhibited sound reliability, validity, sensitivity, specificity and predictive values. Relevance to clinical practice: This scale can help clinical staff members to quickly and accurately diagnose cognitive impairment and provide appropriate treatment as early as possible.

Original languageEnglish
Pages (from-to)3118-3128
Number of pages11
JournalJournal of Clinical Nursing
Volume24
Issue number21-22
DOIs
Publication statusPublished - Nov 1 2015

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Reproducibility of Results
Dementia
Sensitivity and Specificity
Aptitude
Linguistics
Psychometrics
Area Under Curve
Cross-Sectional Studies
Population
Cognitive Dysfunction

Keywords

  • Chinese
  • Chinese version of the Rowland Universal Dementia Assessment Scale
  • Dementia
  • Reliability
  • Sensitivity
  • Specificity
  • Validity

ASJC Scopus subject areas

  • Nursing(all)

Cite this

The reliability, validity, sensitivity, specificity and predictive values of the Chinese version of the Rowland Universal Dementia Assessment Scale. / Chen, Chia Wei; Chu, Hsin; Tsai, Chia Fen; Yang, Hui Ling; Tsai, Jui Chen; Chung, Min Huey; Liao, Yuan Mei; Chi, Mei ju; Chou, Kuei Ru.

In: Journal of Clinical Nursing, Vol. 24, No. 21-22, 01.11.2015, p. 3118-3128.

Research output: Contribution to journalArticle

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abstract = "Aims and objectives: The purpose of this study was to translate the Rowland Universal Dementia Assessment Scale into Chinese and to evaluate the psychometric properties (reliability and validity) and the diagnostic properties (sensitivity, specificity and predictive values) of the Chinese version of the Rowland Universal Dementia Assessment Scale. Background: The accurate detection of early dementia requires screening tools with favourable cross-cultural linguistic and appropriate sensitivity, specificity, and predictive values, particularly for Chinese-speaking populations. Design: This was a cross-sectional, descriptive study. Methods: Overall, 130 participants suspected to have cognitive impairment were enrolled in the study. A test-retest for determining reliability was scheduled four weeks after the initial test. Content validity was determined by five experts, whereas construct validity was established by using contrasted group technique. The participants' clinical diagnoses were used as the standard in calculating the sensitivity, specificity, positive predictive value and negative predictive value. Results: The study revealed that the Chinese version of the Rowland Universal Dementia Assessment Scale exhibited a test-retest reliability of 0·90, an internal consistency reliability of 0·71, an inter-rater reliability (kappa value) of 0·88 and a content validity index of 0·97. Both the patients and healthy contrast group exhibited significant differences in their cognitive ability. The optimal cut-off points for the Chinese version of the Rowland Universal Dementia Assessment Scale in the test for mild cognitive impairment and dementia were 24 and 22, respectively; moreover, for these two conditions, the sensitivities of the scale were 0·79 and 0·76, the specificities were 0·91 and 0·81, the areas under the curve were 0·85 and 0·78, the positive predictive values were 0·99 and 0·83 and the negative predictive values were 0·96 and 0·91 respectively. Conclusion: The Chinese version of the Rowland Universal Dementia Assessment Scale exhibited sound reliability, validity, sensitivity, specificity and predictive values. Relevance to clinical practice: This scale can help clinical staff members to quickly and accurately diagnose cognitive impairment and provide appropriate treatment as early as possible.",
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AU - Chu, Hsin

AU - Tsai, Chia Fen

AU - Yang, Hui Ling

AU - Tsai, Jui Chen

AU - Chung, Min Huey

AU - Liao, Yuan Mei

AU - Chi, Mei ju

AU - Chou, Kuei Ru

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