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J Psychosom Res. 2004 Sep;57(3):297-305.

Development of the Korean version of the Geriatric Depression Scale and its short form among elderly psychiatric patients.

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1
Department of Psychiatry, Inha University Hospital, Incheon, South Korea.

Abstract

OBJECTIVE:

The aim of this study was to evaluate the diagnostic validity of the Korean version of the Geriatric Depression Scale (GDS-K) and its short form among elderly psychiatric patients.

METHOD:

After three preliminary trials, the authors translated the GDS, including the Geriatric Depression Scale-Short Form (SGDS) into Korean. The GDS-K, the Korean version of the SGDS (SGDS-K), Hamilton Rating Scale for Depression (HRS-D), and the Center for Epidemiologic Studies Depression Scale (CES-D) were administered to 154 elderly psychiatric patients. In addition, the Diagnostic Interview Schedule (DIS-III-R) was administered independently to diagnose DSM-III-R major depression. Reliability and validity test, optimal cutoff point estimation, and receiver operating characteristics (ROC) curve analysis were performed to investigate the diagnostic validity of the GDS-K and SGDS-K.

RESULTS:

Internal consistency-reliability and concurrent validity of the GDS-K and SGDS-K associated with other depression scales (HRS-D, CES-D) were excellent. Content validity and discriminant validity, which differentiate DSM-III-R major depression from nonmajor depression was also good. We suggest a score of 16 as the optimal cutoff point of GDS-K for screening DSM-III-R major depression among clinical populations and a score of 8 as optimal cutoff score of SGDS-K. ROC curve analysis indicated high diagnostic validity for both GDS-K and SGDS-K in assessing DSM-III-R major depression. Moreover, we found that the GDS-K and SGDS-K were highly correlated (r=.9522). This finding suggests that the SGDS-K can be used as an adequate substitute for the GDS-K.

CONCLUSION:

The GDS-K and SGDS-K proved valid and reliable case-finding tools for screening DSM-III-R major depression among the elderly psychiatric patients in Korea. The relatively high cutoff points of both the GDS-K and SGDS-K require further evaluation from the viewpoint of culturally determined response style in elderly Koreans.

[Indexed for MEDLINE]

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