A psychometric evaluation of a Chinese version of the Cardiac Depression Scale

Wang, Wenru, Thompson, David R., Chair, Sek Ying and Hare, David L. (2008) A psychometric evaluation of a Chinese version of the Cardiac Depression Scale. Journal of Psychosomatic Research, 65 2: 123-129. doi:10.1016/j.jpsychores.2008.03.010


Author Wang, Wenru
Thompson, David R.
Chair, Sek Ying
Hare, David L.
Title A psychometric evaluation of a Chinese version of the Cardiac Depression Scale
Journal name Journal of Psychosomatic Research   Check publisher's open access policy
ISSN 0022-3999
Publication date 2008-08-01
Sub-type Article (original research)
DOI 10.1016/j.jpsychores.2008.03.010
Open Access Status
Volume 65
Issue 2
Start page 123
End page 129
Total pages 7
Place of publication Oxford , New York
Publisher Elsevier
Language eng
Subject C1
920103 Cardiovascular System and Diseases
110201 Cardiology (incl. Cardiovascular Diseases)
Formatted abstract
Objective
This study aimed to evaluate the validity, reliability, and cultural relevance of the Cardiac Depression Scale (CDS) as a disease-specific screening tool for Chinese cardiac patients.

Methods
The language equivalency and content validity of the Chinese version of the CDS (C-CDS) were evaluated. Measurement performance was tested on 200 Chinese cardiac patients and repeated on 40 patients for test–retest reliability.

Results
One item pertaining to sexual activity was removed from the Chinese version due to poor cultural relevance. The C-CDS demonstrated acceptable internal consistency (Cronbach's α of .91 for the total scale and .53–.78 for the subscales). The high correlation (r=.64–.89) between items and the remainder of their own scale provides further evidence of internal consistency. The test–retest reliability was satisfactory with intraclass correlation coefficients of .94 for the overall scale and .73–.92 for the six subscales. The total and subscale scores that were not significantly different (P>.05) over a 2-week period further support the stability of the instrument. There was acceptable concurrent validity with moderate (r≥.3, P<.001) correlations between the C-CDS and the Chinese version of the Hospital Anxiety and Depression Scale. Principal component analysis revealed six factors, and one dimension was extracted from the data set, which closely resembles the structure of the original instrument.

Conclusion
Empirical data support the C-CDS as a valid and reliable disease-specific tool in assessing depressed mood in Chinese-speaking patients with cardiac disease.
Keyword Cardiac
Depression
Cross-cultural validation
Chinese
Q-Index Code C1
Q-Index Status Confirmed Code

 
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Created: Sat, 18 Apr 2009, 04:13:19 EST by Allison Peacock on behalf of Faculty Of Health Sciences