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CORONAVIRUS COVID-19 Global Cases by the Center for Systems Science and Engineering (CSSE) at Johns Hopkins University (JHU) ...

sábado, 25 de noviembre de 2017

‘Perfil de deterioro cognitivo grave’, una escala válida y fiable para la evaluación de la enfermedad de Alzheimer avanzada

The validity and reliability of the Spanish version of the Severe Cognitive Impairment Profile (SCIP) for the cognitive assessment of persons with advanced stages of Alzheimer's disease

Abstract

in English, Spanish

INTRODUCTION:

Few validated tools exist in Spanish for conducting a precise assessment of the cognitive functioning of persons with advanced dementia. This population is a challenge due to the large number of persons who reach these states and owing to the complexity of the care that they require. This study presents a validated Spanish version of an instrument, the Severe Cognitive Impairment Profile (SCIP), which allows assessment of the cognitive functioning of persons with advanced Alzheimer's disease.

PATIENTS AND METHODS:

We conducted a cross-sectional study with 133 subjects (29 males and 104 females; mean age: 81.61 ± 7.41 years) diagnosed with Alzheimer's disease in moderate to very severe stages, according to the Global Deterioration Scale (GDS 5-7). The following were performed: discrimination analyses of the items, a study of the internal consistency and interrater reliability and test-retest. Likewise, the factorial structure and the validity of the instrument were also tested.

RESULTS:

Only 1% of the 160 items on the scale were found to be non-discriminatory. The internal consistency of the scale is adequate, as is the interrater and the test-retest reliability. As regards the validity of the construct, the correlation with the mini-mental state examination is 0.74 (p < 0.01) and significant differences are found between the SCIP and the three levels of the GDS that were analysed. The factorial structure of the scales shows the existence of a single factor that accounts for 66.12% of the variance.

CONCLUSIONS:

The SCIP scale is a useful, reliable and valid instrument for the exhaustive evaluation in Spanish of the cognitive functions of persons with dementia in moderate to very severe states.



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