Development of the Korean Version of the Consortium to Establish a Registry for Alzheimer's Disease Assessment Packet (CERAD-K): Clinical and Neuropsychological Assessment Batteries

TLDR

The CERAD‑K was developed by translating the English‑American CERAD batteries into Korean with back‑translation, preserving the original structure, and then administered in a standardized manner to 106 dementia patients (including 78 AD) and 186 controls from three university hospitals and two elderly welfare centers to establish its psychometric properties. The CERAD‑K reliably distinguished controls from dementia and AD patients, demonstrated substantial inter‑rater and 1‑month test‑retest reliability, and proved to be an equally valid and reliable equivalent of the English CERAD batteries.

Abstract

A Korean version of the Consortium to Establish a Registry for Alzheimer's Disease Assessment Packet (CERAD-K) was created. The English-American version of CERAD clinical and neuropsychological assessment batteries was translated into Korean, and the psychometrical properties of the cognitive tests in the CERAD-K were established. In the translation, including back-translation, the basic structures of all measures in the original CERAD batteries were maintained. The CERAD-K was administered in a standardized manner to 106 dementia patients (aged 70.4 ± 8.1 years), including 78 Alzheimer's disease (AD) patients, and 186 controls (aged 68.4 ± 4.6 years) who were recruited from 3 university hospitals and 2 elderly welfare centers. The cognitive tests in the CERAD-K successfully differentiated controls from the dementia patients and from the AD patients. They also showed substantial interrater reliability and 1-month test-retest reliability. The CERAD-K is an equally reliable and valid equivalent for the English version of the CERAD clinical and neuropsychological assessment batteries.