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  • Title: [Adaptation and validation of CAMDEX-DS (Cambridge Examination for Mental Disorders of Older People with Down's Syndrome and others with intellectual disabilities) in Spanish population with intellectual disabilities].
    Author: Esteba-Castillo S, Dalmau-Bueno A, Ribas-Vidal N, Vilà-Alsina M, Novell-Alsina R, García-Alba J.
    Journal: Rev Neurol; 2013 Oct 16; 57(8):337-46. PubMed ID: 24081888.
    Abstract:
    INTRODUCTION: Dementia caused by Alzheimer's disease commonly affects the adult population with Down's syndrome. This population presents two characteristic clinical features: a semiologic pattern that differs from the typical Alzheimer's disease, and previous intellectual deficits that may confound the clinical diagnosis. There is a clear need to validate specific instruments adapted to Spanish population. AIM: To adapt and to validate CAMDEX-DS (Cambridge Examination for Mental Disorders of Older People with Down's Syndrome and Others with Intellectual Disabilities) in Spanish population. PATIENTS AND METHODS: 146 patients with intellectual disability (mild to moderate) were recruited and assessed with CAMDEX-DS, K-BIT I and DMR tests. Test-retest reliability, inter-rater concordance and validity statistic were performed between CAMDEX-DS and clinical diagnosis. This is an observational, multicenter, cross-sectional and validation study. RESULTS: Test-retest and inter-rater reliability achieved kappa coefficient values of 0.92 and 0.91, respectively. Agreement (kappa index) for CAMDEX-DS on clinical diagnosis compared to other clinical criteria was high: CAMDEX-DS vs DSM-IV (kappa = 0.95; p < 0,001); CAMDEX-DS vs ICD-10 (kappa = 0.97; p < 0.001). All item-test correlations ranged between 0,31 and 0,69. Internal reliability-calculated using Chronbach's alpha scored 0.93. CONCLUSIONS: The Spanish version of CAMDEX-DS is a valid instrument with high applicability for people with intellectual disability. It shows good psychometric properties. The Cambridge Cognitive Examination for Older Adults with Down's Syndrome (CAMCOG-DS) can set two key points by the level of intellectual disability on the suspicion of cognitive impairment in people with Down's syndrome. TITLE: Adaptacion y validacion del Cambridge Examination for Mental Disorders of Older People with Down's Syndrome and Others with Intellectual Disabilities (CAMDEX-DS) en poblacion española con discapacidad intelectual. UNLABELLED: Introduccion. La demencia causada por la enfermedad de Alzheimer afecta comunmente a la poblacion adulta con sindrome de Down. Esta poblacion presenta dos rasgos clinicos caracteristicos: la presencia de demencia con semiologia distinta a la enfermedad de Alzheimer tipica y deficits intelectuales previos que pueden confundir el diagnostico clinico. Existe una evidente necesidad de validar instrumentos especificos en castellano adaptados a esta poblacion. Objetivo. Adaptar y validar el Cambridge Examination for Mental Disorders of Older People with Down's Syndrome and Others with Intellectual Disabilities (CAMDEX-DS) en poblacion española. Pacientes y metodos. Se consideraron 146 pacientes con discapacidad intelectual (leve-moderada). Se realizo un estudio de validacion de tipo observacional, transversal y multicentrico. Se administraron los siguientes tests: CAMDEX-DS, test breve de inteligencia de Kaufman y Dementia Questionnaire for Persons with Mental Retardation. Se calculo la fiabilidad test-retest, la fiabilidad interjueces, la concordancia del CAMDEX-DS para el diagnostico clinico y la validez. Resultados. La fiabilidad test-retest e interjueces obtuvo un coeficiente kappa de 0,92 y 0,91, respectivamente. El indice kappa del CAMDEX-DS para el diagnostico clinico respecto al resto de los criterios clinicos utilizados fue alto: CAMDEX-DS frente a DSM-IV (kappa = 0,95; p < 0,001); CAMDEX-DS frente a Clasificacion Internacional de Enfermedades, decima revision (kappa = 0,97; p = 0,000). Todas las correlaciones item-test oscilaban entre 0,31 y 0,69. La fiabilidad interna calculada mediante el alfa de Cronbach fue de 0,93. Conclusiones. La version española del CAMDEX-DS es un instrumento valido, de alta aplicabilidad a personas con discapacidad intelectual, que muestra buenas propiedades psicometricas. El Cambridge Cognitive Examination for Older Adults with Down's Syndrome (CAMCOG-DS) permite establecer dos puntos de corte para la sospecha de deterioro cognitivo en el grupo de personas con sindrome de Down en funcion del nivel de discapacidad intelectual previo.
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