Amy L Alderson1, Thomas A Novack. 1. Department of Physical Medicine and Rehabilitation, University of Alabama, Birmingham, USA. amy_alderson@shepherd.org
Abstract
OBJECTIVE: To evaluate the reliability and utility of a brief quantitative measure of cognitive recovery, the Cognitive Log (Cog-Log), developed for daily use with rehabilitation inpatients to provide information about the recovery of higher neurocognitive processes including verbal recall, attention, working memory, motor sequencing, and response inhibition. DESIGN: Descriptive study of the Cog-Log's normative scores, reliability (interrater, internal consistency), and validity as shown by its relationship to standard neuropsychologic measures. SETTING: Inpatient rehabilitation hospital affiliated with a large university medical center. PARTICIPANTS: One hundred fifty neurorehabilitation inpatients with acquired brain injury; 83 young adults without acquired brain injury were included to provide normative data. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: The Cog-Log; standardized neuropsychologic measures of memory (Wechsler Memory Scale-Revised, Rey Auditory Verbal Learning Test), language, attention (Wechsler Adult Intelligence Scale-Revised), and reasoning (Trail Making Test). RESULTS: Reliability analysis showed strong interrater reliability across items (Spearman r, .749-1.00) and high internal consistency (Cronbach alpha=.778). Factor analysis of the Cog-Log using principal components extraction revealed a unitary factor (eigenvalue=3.48). Cog-Log items designed to measure working memory and immediate and delayed verbal memory were most strongly predictive of performance on similar standardized neuropsychologic measures administered on the same day. CONCLUSION: The Cog-Log appears to be a reliable and efficient tool for measuring ongoing neurocognitive recovery during inpatient rehabilitation.
OBJECTIVE: To evaluate the reliability and utility of a brief quantitative measure of cognitive recovery, the Cognitive Log (Cog-Log), developed for daily use with rehabilitation inpatients to provide information about the recovery of higher neurocognitive processes including verbal recall, attention, working memory, motor sequencing, and response inhibition. DESIGN: Descriptive study of the Cog-Log's normative scores, reliability (interrater, internal consistency), and validity as shown by its relationship to standard neuropsychologic measures. SETTING: Inpatient rehabilitation hospital affiliated with a large university medical center. PARTICIPANTS: One hundred fifty neurorehabilitation inpatients with acquired brain injury; 83 young adults without acquired brain injury were included to provide normative data. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: The Cog-Log; standardized neuropsychologic measures of memory (Wechsler Memory Scale-Revised, Rey Auditory Verbal Learning Test), language, attention (Wechsler Adult Intelligence Scale-Revised), and reasoning (Trail Making Test). RESULTS: Reliability analysis showed strong interrater reliability across items (Spearman r, .749-1.00) and high internal consistency (Cronbach alpha=.778). Factor analysis of the Cog-Log using principal components extraction revealed a unitary factor (eigenvalue=3.48). Cog-Log items designed to measure working memory and immediate and delayed verbal memory were most strongly predictive of performance on similar standardized neuropsychologic measures administered on the same day. CONCLUSION: The Cog-Log appears to be a reliable and efficient tool for measuring ongoing neurocognitive recovery during inpatient rehabilitation.
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