The K-T cancellation test in the older adults: Normative data and construct validity
2013
Wu, Ya-Huei | de Rotrou, Jocelyne | Vidal, Jean-Sébastien | Jeandel, Claude | Rigaud, Anne-Sophie | Kesse-Guyot, Emmanuelle | Hanon, Olivier | Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP) | Université Paris Descartes - Paris 5 (UPD5) | Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier) | Unité de Recherche en Epidémiologie Nutritionnelle (UREN) ; Université Paris 13 (UP13)-Institut National de la Recherche Agronomique (INRA)-Conservatoire National des Arts et Métiers [Cnam] (Cnam)-Université Sorbonne Paris Cité (USPC)-Institut National de la Santé et de la Recherche Médicale (INSERM)
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Show more [+] Less [-]English. Since cutoff scores are necessary for differentiating normal cognitive functioning from dementia, the main objective of this study was to establish normative data of the K-T test, a standardized cancellation test. The construct validity of K-T test was also investigated. In total, 2471 cognitively intact elderly subjects from the SU.VI.MAX 2 study were included in the present study. Younger subjects, women and subjects with higher education had a higher number of correct answers and fewer omission errors. Participants made few commission errors and only the educational level was found to have a significant effect. Normative data for correct responses and efficiency were stratified by age, education, and gender. Correlation analysis showed that the K-T test was significantly correlated to validated neuropsychological tests assessing executive functions. This study permits to strengthen the utility of the K-T test to detect impairment of the executive components involved in the task.
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