Reliability and Validity of the Korean Version of Short Blessed Test (SBT-K) as a Dementia Screening Instrument.
- Author:
Dong Young LEE
1
;
Jong Choul YOON
;
Kang Uk LEE
;
Jin Hyeong JHOO
;
Ki Woong KIM
;
Jung Hie LEE
;
Jong Inn WOO
Author Information
1. Department of Neuropsychiatry, Seoul National University Hospital & Neuroscience research institute, Seoul National University, College of Medicine, Seoul, Korea.
- Publication Type:Original Article
- Keywords:
Dementia;
Screening instrument;
SBT-K;
Reliability;
Validity
- MeSH:
Dementia*;
Humans;
Mass Screening*;
Reproducibility of Results*;
ROC Curve;
Sensitivity and Specificity
- From:Journal of Korean Neuropsychiatric Association
1999;38(6):1365-1375
- CountryRepublic of Korea
- Language:Korean
-
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.