The development and validation of the self-reported cognitive function scale
Date Issued
2016
Date
2016
Author(s)
Wang, Hsiao-Lin
Abstract
The Chinese Version of NEUROQOL Applied General Concerns Scale (NeuroQOL-AC-GC) and NEUROQOL Applied Executive Function Scale (NeuroQOL-AC-EF) were developed to evaluate the cognitive functions of the clients with neurological disease. There were 44 and 42 items within each scale. The aim of this study are to investigate the psychometric properties of these two scales for normal subjects dwelling in community of Taiwan. There were 200 normal subjects participating in the study. Their age ranged from 18 to 63, the mean age is 28.55(SD=9.7); 62% were male; 76.5% were single. Rasch measurement model and classic test theory were applied to analyze the data. The final NeuroQOL-AC-GC contains 42 item of 4 or 5-point rating scales. All item had acceptable fit statistics and met unidimensionality requirement with Rasch analysis. It can measure participants’ cognitive level up to 98% accuracy. It can also be used to classify the subjects into 12 statistically distinct levels. The NeuroQOL-AC-EF contains 29 item of 3 or 4 or 5-point rating scales. All item had acceptable fit statistic and met unidimensionality requirement with Rasch analysis. It can measure participants’ cognitive level up to 70.5% accuracy. It can also be used to classify the subjects into 9 statistically distinct levels. The internal consistency of two scales were excellent (Cronbach''s alpha = 0.955 and 0.967 prospectively). There was mild to moderate correlation among variables of NeuroQOL-AC-EF and Wisconsin Card Sorting Test-64 (r=.052~.249,p=.000~.464；r=-.112~-.237, p=.000~.115). There were moderate correlation among variables of NeuroQOL-AC-EF, Mini-Mental State Examination, WMS-III Working Memory total scole and Letter-Number Sequencing scole.(r=.424,p<0.001；r=.331,p<0.001；r=.347,p<0.001). There were significant differences of the general concerns score among groups varying degree of depression and anxiety severity. So were the results of the NeuroQOL-AC- GC. These results indicate that two scales can be used to differentiate the cognitive functions among persons with varying level of depression and anxiety. The findings provide further implication to suggest that these two scales could be potentially used as a tool to evaluate the needs for cognitive rehabilitation. According to our experiences, the results of the questionnaire were easy to transform to day to day task for training. The level of cognitive functions provided by the analysis could be used as an index of the progress of the rehabilitation of the clients. Finally, since the data of the the study was collected through the use of tablet PC via internet-based questionnaire, we found that it was easy and time-saving . In the future, there is need to collect data on the subjects with various mental illness diagnoses to provide further evidence of its psychometric qualities.
Subjects
Cognitive function
Self-reported scale
Rasch model
Quality of Life in Neurological Disorders measures(NEUROQOL)
Cognitive Function Scale
SDGs
Type
thesis
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