Known-Group Validity and Inter-Rater Reliability of the Dynamic Loewenstein Occupational Therapy Cognitive Assessment (DLOTCA) - Thai Version
Keywords:Dynamic Loewenstein Occupational Therapy Cognitive Assessment, cognitive impairment, psychometric property, neurological dysfunction, occupational therapy
Objectives: To investigate the known-group validity and inter-rater reliability of the Dynamic Loewenstein Occupational Therapy Cognitive Assessment (DLOTCA) - Thai version.
Study design: Descriptive cross-sectional design.
Setting: Four hospitals and four community rehabilitation centers in Chiang Mai province, Thailand.
Subjects: Thirty-seven patients with cognitive impairment and 37 healthy subjects were recruited by using the purposive sampling method.
Methods: The DLOTCA - Thai version was administered to the subjects. People with cognitive impairment were evaluated by two occupational therapists. The known-group validity was determined by using a comparative design between the groups with the Mann-Whitney U test and within the groups with the Wilcoxon signed-rank test. The reliability between the two raters was analyzed by using the intra-class correlation coefficient (ICC).
Results: The DLOTCA - Thai version successfully differentiated the pre-mediation scores between the two groups. People with cognitive impairment showed lower cognitive abilities and needed higher levels of mediation. Significant differences were found between the pre- and post-mediation scores within each group, which indicated high known-group validity of the DLOTCA - Thai version. The ICC between the two raters ranged from 0.914 to 1.000 that showed the high inter-rater reliability of the instrument.
Conclusions: From the results of the high degree of the known-group validity and inter-rater reliability, the DLOTCA - Thai version is an effective tool for identifying cognitive abilities in neurological dysfunction with cognitive impairment in clinical settings. This assessment tool also suggests potential change and provides an indication of the level of mediation that would benefit cognitive intervention.
Keywords: Dynamic Loewenstein Occupational Therapy Cognitive Assessment, cognitive impairment, psychometric property, neurological dysfunction, occupational therapy
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