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Reliability and validity of the Thai version of the Calgary Depression Scale for Schizophrenia.
Neuropsychiatr Dis Treat 2013; 9:113-8ND

Abstract

AIM

The purpose of this study was to assess the reliability and validity of the Thai version of the Calgary Depression Scale for Schizophrenia (CDSS) for the evaluation of depression in patients with schizophrenia.

METHODS

Sixty patients with schizophrenia according to Diagnostic and Statistical Manual of Mental Disorders: Fourth Edition; Text Revision (DSM-IV-TR) criteria were recruited to the study The Thai version of the CDSS, the Montgomery-Åsberg Depression Rating Scale (MADRS), the Hamilton Depression Rating Scale, 17-item version (HDRS-17), and the Positive and Negative Syndrome Scale (PANSS) were administered. A major depressive episode diagnosed by a psychiatrist according to the DSM-IV-TR was used as a gold standard.

RESULTS

The internal consistency of the Thai version of the CDSS was very good (Cronbach's alpha = 0.869). The inter-rater reliability was found to be in substantial agreement with the intra-class correlation coefficient of 0.979. The test-retest reliability over a period of 3 days was high, with an intra-class correlation coefficient of 0.861. The Thai version of the CDSS showed significant correlations with the MADRS (r = 0.887), the HDRS-17 (r = 0.865), and the depression item of the Positive and Negative Syndrome Scale (PANSS-G6) (r = 0.833). The areas under the receiver operating characteristic curve of the CDSS, MADRS, HDRS-17, and PANSS-G6 against the DSM-IV-TR criteria for major depressive episode were 0.993, 0.954, 0.966, and 0.933, respectively. The optimal cut-off score to discriminate between depressed and non-depressed patients was 6/7, with a sensitivity of 92.31% and specificity of 97.87%.

CONCLUSION

The Thai version of the CDSS is a reliable and valid measure for the evaluation of depression in Thai patients with schizophrenia.

Authors+Show Affiliations

Department of Psychiatry, Faculty of Medicine.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

23355781

Citation

Suttajit, Sirijit, et al. "Reliability and Validity of the Thai Version of the Calgary Depression Scale for Schizophrenia." Neuropsychiatric Disease and Treatment, vol. 9, 2013, pp. 113-8.
Suttajit S, Srisurapanont M, Pilakanta S, et al. Reliability and validity of the Thai version of the Calgary Depression Scale for Schizophrenia. Neuropsychiatr Dis Treat. 2013;9:113-8.
Suttajit, S., Srisurapanont, M., Pilakanta, S., Charnsil, C., & Suttajit, S. (2013). Reliability and validity of the Thai version of the Calgary Depression Scale for Schizophrenia. Neuropsychiatric Disease and Treatment, 9, pp. 113-8. doi:10.2147/NDT.S40292.
Suttajit S, et al. Reliability and Validity of the Thai Version of the Calgary Depression Scale for Schizophrenia. Neuropsychiatr Dis Treat. 2013;9:113-8. PubMed PMID: 23355781.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Reliability and validity of the Thai version of the Calgary Depression Scale for Schizophrenia. AU - Suttajit,Sirijit, AU - Srisurapanont,Manit, AU - Pilakanta,Sutrak, AU - Charnsil,Chawanun, AU - Suttajit,Siritree, Y1 - 2013/01/16/ PY - 2013/1/29/entrez PY - 2013/1/29/pubmed PY - 2013/1/29/medline KW - 17-item version KW - CDSS KW - Montgomery-Åsberg Depression Rating Scale KW - Positive and Negative Syndrome Scale KW - the Hamilton Depression Rating Scale SP - 113 EP - 8 JF - Neuropsychiatric disease and treatment JO - Neuropsychiatr Dis Treat VL - 9 N2 - AIM: The purpose of this study was to assess the reliability and validity of the Thai version of the Calgary Depression Scale for Schizophrenia (CDSS) for the evaluation of depression in patients with schizophrenia. METHODS: Sixty patients with schizophrenia according to Diagnostic and Statistical Manual of Mental Disorders: Fourth Edition; Text Revision (DSM-IV-TR) criteria were recruited to the study The Thai version of the CDSS, the Montgomery-Åsberg Depression Rating Scale (MADRS), the Hamilton Depression Rating Scale, 17-item version (HDRS-17), and the Positive and Negative Syndrome Scale (PANSS) were administered. A major depressive episode diagnosed by a psychiatrist according to the DSM-IV-TR was used as a gold standard. RESULTS: The internal consistency of the Thai version of the CDSS was very good (Cronbach's alpha = 0.869). The inter-rater reliability was found to be in substantial agreement with the intra-class correlation coefficient of 0.979. The test-retest reliability over a period of 3 days was high, with an intra-class correlation coefficient of 0.861. The Thai version of the CDSS showed significant correlations with the MADRS (r = 0.887), the HDRS-17 (r = 0.865), and the depression item of the Positive and Negative Syndrome Scale (PANSS-G6) (r = 0.833). The areas under the receiver operating characteristic curve of the CDSS, MADRS, HDRS-17, and PANSS-G6 against the DSM-IV-TR criteria for major depressive episode were 0.993, 0.954, 0.966, and 0.933, respectively. The optimal cut-off score to discriminate between depressed and non-depressed patients was 6/7, with a sensitivity of 92.31% and specificity of 97.87%. CONCLUSION: The Thai version of the CDSS is a reliable and valid measure for the evaluation of depression in Thai patients with schizophrenia. SN - 1176-6328 UR - https://www.unboundmedicine.com/medline/citation/23355781/Reliability_and_validity_of_the_Thai_version_of_the_Calgary_Depression_Scale_for_Schizophrenia_ L2 - https://dx.doi.org/10.2147/NDT.S40292 DB - PRIME DP - Unbound Medicine ER -