Clinical utility of an assessment scale for engagement in activities for patients with moderate-to-severe dementia: additional analysis.

BACKGROUND: We developed the assessment scale for engagement in activities (ASEA), an assessment tool used to quantify engagement in therapeutic activities for patients with moderate-to-severe dementia. In this study, we report additional analyses to confirm the viability of ASEA as a reliable measurement scale. METHODS: This study included 195 patients with moderate-to-severe dementia in a psychiatric acute-phase hospital. Additional analyses based on the Consensus-based Standards for the Selection of Health Measurement Instruments (COSMIN) checklist were as follows: (i) exploratory and confirmatory factor analysis; (ii) standard error of measurement (SEM), minimal detectable change (MDC) and limit of agreement (LOA); (iii) short change score from baseline to 2 weeks; and (iv) correlation to the facial expression analysis system. RESULTS: Exploratory factor analysis yielded two factors. This two-factor model of ASEA exhibited an acceptable and validated model fit (comparative fit index = 0.954, Tucker Lewis index = 0.936, goodness-of-fit index = 0.927, adjusted goodness-of-fit index = 0.873, root mean square error of approximation = 0.091, standardised root mean square residual = 0.045) by confirmatory factor analysis. SEM and MDC were 1.29 and 3.80, respectively. The Bland-Altman plot for examining LOA showed no apparent fixed bias. From baseline to 2 weeks later, 129 participants were retested. The mean ASEA total score improved significantly (Wilcoxon signed-rank test; P < 0.01, effect size = 0.25) from baseline (14.30 ± 2.63) to 2 weeks later (15.00 ± 2.73). The correlation between each emotion value was calculated using Kokoro sensor, which is an affect analysis based on human facial expression data using deep learning. For the 36 video data samples, the total score and domains of arousal, interaction, and affect in ASEA were statistically significantly correlated with the emotion value of joy, engagement, and valence (Spearman rank correlation; P < 0.05). CONCLUSIONS: Among the few evaluation methods specific to severe dementia, ASEA is a useful scale for quantifying and evaluating the state of engagement in therapeutic activities.

Development of an assessment scale for engagement in activities for patients with moderate to severe dementia.

BACKGROUND: Various types of therapy, including occupational therapy, are utilised for the treatment of moderate to severe dementia. In order to determine the optimal rehabilitation strategy for such patients and examine the treatment efficacy, an assessment scale for engagement in various group activities that can be easily applied in clinical situations is required. We herein report the development of the Assessment Scale for Engagement in Activities (ASEA) and its clinical utility. METHODS: The ASEA was developed by nine occupational therapists and a psychiatrist with experience in developing measures for dementia, in accordance with the COSMIN (COnsensus-based Standards for the selection of health status Measurement INstruments) checklist. This assessment comprises 10 items covering four domains: Engagement in the Activity, Interaction, Arousal, and Affect. Participants with moderate to severe dementia who resided in a psychiatric acute phase hospital in Japan were assessed in terms of engagement in activities using the ASEA and Todai-shiki Observational Rating Scale (TORS), and in terms of cognitive function using the Mini-Mental State Examination (MMSE). We examined the internal consistency, inter- and intra-rater reliability, content validity, and concurrent validity of the ASEA. RESULTS: Cronbach's alpha of the ASEA was 0.889. The overall inter-rater reliability was 0.937 (Spearman rank correlation, P < 0.001), and the intraclass correlation (ICC) for each item was 0.490-0.965 (P < 0.018-0.001). The overall test-retest reliability was 0.778 (Spearman's rank correlation, P < 0.001), and the ICC for each item was 0.498-0.863 (P < 0.023-0.001). The test-retest correlations were significant for almost all items, aside from 'Interaction with others' (P = 0.051). The concurrent validity, examined using the TORS and MMSE, was 0.920 and 0.304 (Spearman's rank correlation, P < 0.001-0.006). CONCLUSIONS: The ASEA has confirmed reliability and validity, aside from 'Interaction with others' regarding test-retest reliability. Generally, this assessment tool has clinical utility and allows the evaluation of activity engagement among patients with moderate to severe dementia.