OBJECTIVES: Alzheimer's disease assessment scale-cognitive subscale (ADAS-Cog) has become a standard clinical trials outcome for cognition, but has been recognized as deficient in areas including coverage of cognitive domains, sensitivity and standardization. Computerized test batteries may address some of these issues. The cognitive drug research computerized assessment (CDR) system is validated in Alzheimer's disease (AD). This study was designed to further evaluate validity in relation to ADAS-Cog, mini mental state examination (MMSE) and cerebrospinal fluid (CSF) biomarkers and psychometric properties, in a population of Alzheimer's patients on stable anticholinesterase treatment. MATERIALS AND METHODS: Patients completed cognition assessments, CSF and blood sampling at baseline and 6 months later. Data for 65 patients were evaluated. RESULTS: The CDR system demonstrated good psychometric properties in this population. Measures of psychomotor speed showed possible sensitivity to decline over 6 months. CONCLUSIONS: There are a number of methodological problems with current cognition assessment methodology for clinical trials. Computerized measures and in particular millisecond reaction time measures, may address many of these issues.
OBJECTIVES:Alzheimer's disease assessment scale-cognitive subscale (ADAS-Cog) has become a standard clinical trials outcome for cognition, but has been recognized as deficient in areas including coverage of cognitive domains, sensitivity and standardization. Computerized test batteries may address some of these issues. The cognitive drug research computerized assessment (CDR) system is validated in Alzheimer's disease (AD). This study was designed to further evaluate validity in relation to ADAS-Cog, mini mental state examination (MMSE) and cerebrospinal fluid (CSF) biomarkers and psychometric properties, in a population of Alzheimer'spatients on stable anticholinesterase treatment. MATERIALS AND METHODS:Patients completed cognition assessments, CSF and blood sampling at baseline and 6 months later. Data for 65 patients were evaluated. RESULTS: The CDR system demonstrated good psychometric properties in this population. Measures of psychomotor speed showed possible sensitivity to decline over 6 months. CONCLUSIONS: There are a number of methodological problems with current cognition assessment methodology for clinical trials. Computerized measures and in particular millisecond reaction time measures, may address many of these issues.
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Authors: Nuno Mendonça; Antoneta Granic; John C Mathers; Carmen Martin-Ruiz; Keith A Wesnes; Chris J Seal; Carol Jagger; Tom R Hill Journal: J Am Med Dir Assoc Date: 2017-06-21 Impact factor: 4.669
Authors: Juha O Rinne; Keith Wesnes; Jeffrey L Cummings; Pasi Hakulinen; Merja Hallikainen; Jutta Hänninen; Michael Murphy; Henry Riordan; Mika Scheinin; Hilkka Soininen; Juha Rouru Journal: Alzheimers Dement (N Y) Date: 2016-12-08
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Authors: Blossom C M Stephan; Graciela Muniz-Terrera; Antoneta Granic; Joanna Collerton; Karen Davies; Brian K Saxby; Keith A Wesnes; Thomas B L Kirkwood; Carol Jagger Journal: Int J Geriatr Psychiatry Date: 2017-06-22 Impact factor: 3.485