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  • Title: Effectiveness of the Kaufman Brief Intelligence Test in people with Prader-Willi syndrome.
    Author: Jaime MP, Gerk A, Stegmann J.
    Journal: J Intellect Disabil Res; 2024 Jan; 68(1):45-52. PubMed ID: 37732721.
    Abstract:
    BACKGROUND: Evaluating intelligence using conventional tools is very complex in patients with Prader-Willi Syndrome (PWS), as it is time consuming and requires levels of care that are difficult to sustain for this population. Therefore, we explore the ability of a brief test to assess intelligence in these patients. METHODS: This study included individuals with a genetically confirmed diagnosis of PWS, with regular attendance at transdisciplinary treatment in an institution dedicated to the care of rare diseases in Argentina. The Wechsler Intelligence Scale for Children (WISC-IV), the Wechsler Adult Intelligence Scale (WAIS-III) and the Kaufman Brief Intelligence Test (K-BIT) were used. RESULTS: Correlation was obtained between the scales in paediatric and adult populations. Within the paediatric population, no significant differences were identified between the WISC-IV scale (Wechsler for paediatrics) and the K-BIT (56.4 ± 8.6, vs. 53.4 ± 10.1, P = 0.28), with a good agreement between the methods {intraclass correlation 0.79 [95% confidence interval (CI) 0.15-0.95]}. Regarding the adult population, the discrimination of the WAIS-III scale (Wechsler for adults) and the K-BIT of adults (16 years and over) presented an acceptable concordance [0.77 (95% CI -0.09; 0.93)], although also underestimating the results (58.3 ± 7.2 vs. 51.1 ± 11.2, P < 0.0001). CONCLUSIONS: We observed the feasibility and potential usefulness of a brief intelligence test (K-BIT) in patients with PWS with an acceptable agreement with conventional tools.
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