About this trial
This pilot randomized controlled trial evaluates the feasibility and preliminary efficacy of VICA, an AI-powered virtual care assistant that delivers evidence-based education, symptom monitoring, and coaching to informal caregivers of people living with Alzheimer's disease and related dementias (ADRD). Sixty caregiver-patient dyads will be randomized 1:1 to VICA or an attention-control education app (Dementia Guide Expert) for 3 months. The study will assess recruitment, VICA acceptance/usability, and engagement (Aim 1), and estimate effect sizes for reducing patient behavioral and psychological symptoms of dementia (BPSD) and caregiver distress (Aim 2).
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Age ≥ 65 years
Community-dwelling
Diagnosed with ADRD
Clinical notes indicate behavioral and psychological symptoms of dementia (BPSD) Inclusion Criteria: Informal Caregiver
Disqualifiers
Life expectancy less than 6 months
Clinician-reported cognitive impairment
Clinician-reported severe mental illness or substance use disorder
Clinician-reported life expectancy of less than 6 months
Trial design
Parallel
Treatments tested in this trial
VICA - Virtual Informal Care Assistant
DeviceAn AI-powered avatar delivering conversational, speech-to-speech and text-based education, resource information, and symptom-monitoring support to informal caregivers of patients with Alzheimer's disease and related dementias (ADRD), grounded in the ABC collaborative dementia care model via a retrieval-augmented generation system.
Education only BPSD mobile app
DeviceAccess to Dementia Guide Expert, an existing free, education-only BPSD mobile app (ENGAGE-IL initiative, University of Illinois at Chicago), used on the same 3x/week, \~20 minute schedule for 3 months. No interactive coaching, assessment, or personalized response.
Treatment groups
Trial outcomes
Primary outcomes
Neuropsychiatric Inventory (NPI) total score
A 12-domain caregiver-informant-rated measure of patient behavioral and psychological symptoms of dementia. Each domain is scored as frequency (1-4) times severity (1-3) if present, or 0 if absent. Domain scores are summed for a Total Score ranging 0-144; higher scores indicate more frequent and/or severe symptoms.
Neuropsychiatric Inventory-Distress (NPI-D) Scale
Derived from the same 12-domain NPI interview. For each domain in which a symptom is present, the caregiver rates how emotionally distressing that behavior is to them, from 0 (not at all) to 5 (very severely). Ratings are summed across domains for a total score of 0-60; higher scores indicate greater caregiver distress.
Assessment completion rate
Recruitment rate
Recruitment rate computed monthly as # approached, # agreeing, and \# consenting, tracked continuously throughout the accrual period.
Secondary outcomes
Patient Health Questionnaire-9 (PHQ-9)
A 9-item caregiver-reported measure of depressive symptom severity. Scored 0-27; higher scores indicate more severe depression.
Generalized Anxiety Disorder 7-item Scale (GAD-7)
A 7-item caregiver self-report measure of anxiety symptom severity, scored 0-3 per item and summed for a total ranging 0-21; higher scores indicate more severe anxiety.
Sponsors and contacts
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Indiana University
Lead sponsor
University of Notre Dame
Collaborator
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