Re-standardization of the Korean- Instrumental Activities of Daily Living (K-IADL): Clinical Usefulness for Various Neurodegenerative Diseases
Dementia and Neurocognitive Disorders
;
: 11-22, 2018.
Article
in English
| WPRIM
| ID: wpr-713162
ABSTRACT
BACKGROUND AND PURPOSE:
Evaluating instrumental activities of daily living (IADL) is an important part of procedure to diagnose dementia. The Korean-Instrumental Activities of Daily Living (K-IADL) has been used extensively in Korea. However, its cut-off score has not been reformulated since 2002. The purpose of this study was to yield a new optimal cut-off score for the K-IADL and confirm the validity of this new cut-off score with various dementia groups.METHODS:
We retrospectively collected a total of 2,347 patients' K-IADL data from 6 general hospitals in Korea. These patients had mild cognitive impairment (MCI) or dementia with various etiologies for cognitive impairment. We also recruited a normal control group (n=254) from the community. Korean-Mini Mental State Examination, Short version of the Geriatric Depression Scale, Clinical Dementia Rating, and Global Deterioration Scale were administered to all participants. Caregivers completed K-IADL and Barthel Index.RESULTS:
K-IADL scores were significantly different among dementia subgroups, but not significantly different among MCI subgroups. Based on internal consistency, correlations with other scales, and factor analysis, K-IADL showed excellent reliability and validity. The new optimal cut-off score to diagnose dementia was 0.40, which gave a sensitivity of 0.901 and a specificity of 0.916. Positive predictive value for dementia using the new cut-off score was 94.2% for Alzheimer's disease, 100% for vascular dementia, and 84% for Parkinson's disease.CONCLUSIONS:
Our results illustrate that the new K-IADL cut-off score of 0.40 is reliable and valid for screening impairments of daily functioning resulting from various etiologies.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Parkinson Disease
/
Weights and Measures
/
Activities of Daily Living
/
Dementia, Vascular
/
Mass Screening
/
Reproducibility of Results
/
Retrospective Studies
/
Sensitivity and Specificity
/
Caregivers
/
Cognition Disorders
Type of study:
Diagnostic study
/
Observational study
/
Prognostic study
/
Screening study
Limits:
Humans
Country/Region as subject:
Asia
Language:
English
Journal:
Dementia and Neurocognitive Disorders
Year:
2018
Type:
Article
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