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P4‐392: PREDICTING DAYTIME MANIFESTATIONS OF CHALLENGING BEHAVIOURS IN ADVANCED STAGES OF DEMENTIA USING PRE‐DAYTIME ACCELEROMETRY: POST‐HOC ANALYSIS OF THE DZNE ROSTOCK INSIDEDEM STUDY
Author(s) -
Amaefule Chimezie O.,
Goerss Doreen,
Halek Margareta,
Kernebeck Sven,
Kirste Thomas,
Teipel Stefan J.
Publication year - 2019
Publication title -
alzheimer's and dementia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.713
H-Index - 118
eISSN - 1552-5279
pISSN - 1552-5260
DOI - 10.1016/j.jalz.2019.06.4063
Subject(s) - dementia , medicine , physical medicine and rehabilitation , post hoc analysis , accelerometer , physical therapy , psychology , disease , computer science , pathology , operating system
with dementia (PWD) opens up new and promising technological development of cyber-human systems to enable early caregiver intervention. Caregivers shoulder most of the burden of dementia caregiving, and the BESI project seeks to reduce burden and improve caregiver self-efficacy. Methods: This mixed methods, remote ethnographic study is explored in a 3-phase, multi-year plan. In Phase 1 we developed the BESI system, completed usability studies in Alzheimer’s Disease support groups using the Systems Usability Scale (SUS), and refined the system. Dyads (caregivers + PWD) who live at home are studied for 30 days in Phase 2 with continuous data collection during the deployment period. A tablet application for caregivers is used to log PWD activities, agitation events, and input markers of caregiver self-efficacy. Using wearable wrist technology (e.g. Pebble ), agitation severity level, physical, behavioral, and social activities of the PWD are captured. Post-deployment surveys of all ten dyads provided data on the system usability from questions posed with Likert-type scaling response ratings between 1 and 6 plus qualitative feedback. Results: Between phases 1 & 2, the tablet application was updated to enhance interface usability for caregivers. Scores for the ten questions (rated 1-6) on ease of use of the tablet were in the very easy range (5.11 5.90). Agreement on use of the table device yielded SUS scores (rated 1-5) with range of 2.67 4.56. Preliminary analysis of the subjective feedback indicates overall positive impressions in working with the technologies. Conclusions: Phase 2 results facilitated targeted changes in BESI, improving overall usability for the final phase of the study. Caregivers consistently demonstrated willingness to help – including working with technologies previously unfamiliar. These subjectoriented design decisions influenced the team in understanding caregiver and PWD dyad interactions with technologies. The full qualitative report will be available in June 2019.