Determining optimal cutoff scores of Cognitive Abilities Screening Instrument to identify dementia and mild cognitive impairment in Taiwan.
BMC Geriatr
; 24(1): 216, 2024 Mar 02.
Article
em En
| MEDLINE
| ID: mdl-38431549
ABSTRACT
BACKGROUND:
The early detection of dementia depends on efficient methods for the assessment of cognitive capacity. Existing cognitive screening tools are ill-suited to the differentiation of cognitive status, particularly when dealing with early-stage impairment.METHODS:
The study included 8,979 individuals (> 50 years) with unimpaired cognitive functions, mild cognitive impairment (MCI), or dementia. This study sought to determine optimal cutoffs values for the Cognitive Abilities Screening Instrument (CASI) aimed at differentiating between individuals with or without dementia as well as between individuals with or without mild cognitive impairment. Cox proportional hazards models were used to evaluate the value of CASI tasks in predicting conversion from MCI to all-cause dementia, dementia of Alzheimer's type (DAT), or to vascular dementia (VaD).RESULTS:
Our optimized cutoff scores achieved high accuracy in differentiating between individuals with or without dementia (AUC = 0.87-0.93) and moderate accuracy in differentiating between CU and MCI individuals (AUC = 0.67 - 0.74). Among individuals without cognitive impairment, scores that were at least 1.5 × the standard deviation below the mean scores on CASI memory tasks were predictive of conversion to dementia within roughly 2 years after the first assessment (all-cause dementia hazard ratio [HR] = 2.81 - 3.53; DAT 1.28 - 1.49; VaD 1.58). Note that the cutoff scores derived in this study were lower than those reported in previous studies.CONCLUSION:
Our results in this study underline the importance of establishing optimal cutoff scores for individuals with specific demographic characteristics and establishing profiles by which to guide CASI analysis.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Demência Vascular
/
Transtornos Cognitivos
/
Doença de Alzheimer
/
Disfunção Cognitiva
Limite:
Humans
País/Região como assunto:
Asia
Idioma:
En
Revista:
BMC Geriatr
Assunto da revista:
GERIATRIA
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
Taiwan