J Korean Neurol Assoc.  2001 Nov;19(6):585-591.

Estimating the Validity of the Korean Version of Expanded Clinical Dementia Rating (CDR) Scale

• Choi SH
• Na DL
• Lee BH
• Hahm DS
• Jeong JH
• Yoon SJ
• Yoo KH
• Ha CK
• Han IW
• Dementia Research Group

Abstract

BACKGROUND: The Clinical Dementia Rating (CDR) scale is broadly accepted by clinicians as a staging measure for dementia. The aim of this study was to test inter-rater reliability and concurrent validity of the Korean version of the CDR.
METHODS
Participants included 34 persons without dementia and 41 patients with Alzheimer's disease, and 37 patients with vascular dementia. The participants and their informed collateral sources were interviewed by a rater using a semistructured clinical interview. To obtain concurrent validity, all the participants received K-MMSE, K-SKT (Syndrom Kurz Test), and a 15-items abbreviated K-BNT on the same day. We also tested inter-rater reliability among four raters using a videotape design.
RESULTS
Agreements of the overall CDR ratings (kappa, 0.86-1.0) and Sum of Boxes of CDR (CDR-SB) (gamma, 0.89-1.0) by the four raters were high. Both global CDR and CDR-SB correlated significantly with K-MMSE, K-SKT and the abbreviated K-BNT. The Orientation and Memory box score correlated significantly with orientation and memory scores of K-MMSE.
CONCLUSIONS
The Korean version of CDR appears to be a reliable and valid tool as a staging measure for Korean dementia patients.

Keyword

Dementia; Alzheimer's disease; Vascular dementia

MeSH Terms

Alzheimer Disease
Dementia*
Dementia, Vascular
Humans
Memory
Videotape Recording