J Korean Neuropsychiatr Assoc.
1999 Nov;38(6):1365-1375.
Reliability and Validity of the Korean Version of Short Blessed Test (SBT-K) as a Dementia Screening Instrument
- Affiliations
-
- 1Department of Neuropsychiatry, Seoul National University Hospital & Neuroscience research institute, Seoul National University, College of Medicine, Seoul, Korea.
- 2Department of General Psychiatry, Seoul National Mental Hospital, Seoul, Korea.
- 3Department of Neuropsychiatry, Yongin Mental Hospital, Yongin, Kyonggi Province, Korea.
- 4Research Institute of Aging & Physical Culture, Medical Research Center, Seoul National University, Seoul, Korea.
Abstract
- We aimed to develop the Korean version of Short Blessed test (SBT-K) by analyzing its reliability and validity, showing its usefulness as a dementia screening instrument. The translation, including back translation procedure, was carried out, keeping the basic structure of SBT. SBT-K. The Korean Version of Blessed Dementia Scale-Activity of Daily Living (BDS-ADL-K) and Clinical Dementia Rating Scale (CDR) were administered to 224 dementia patients and 191 control subjects, and The Korean Version of Consortium to Establish a Registry of Alzheimer's Disease-Mini-Mental State Examination (CERAD-MMSE-K) was to 157 patients and 167 controls. The correlation of SBT-K scores between two raters, correlation between the test and retest after one month, and its internal consistency were analyzed. To verify the concurrent validity of SBT-K, its correlation with each test: CERAD-MMSE-K, BDS-ADL-K, and CDR was analyzed. The sensitivity and specificity for each cut-off point of SBT-K were calculated and the Receiver Operator Characteristic (ROC) curve analysis was done to get its optimal cut-off point. SBT-K was found to have significantly high internal consistency, inter-rater reliability, and test-retest reliability. The significant correlation of SBT-K with each test described above was also shown. Its optimal cut-off point was estimated as 10/11, and the sensitivity and specificity were 0.85 and 0.90, respectively. The ROC curve analysis indicated that the diagnostic efficiency of SBT-K was comparable with CERAD-MMSE-K. We conclude that SBT-K has not only high reliability and validity, but also usefulness as a screening instrument for dementia.
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