Determinants of behavioral and psychological symptoms of dementia: A scoping review of the evidence

BACKGROUND

Behavioral and psychological symptoms of dementia (BPSD) are prevalent in people with neurodegenerative diseases.

PURPOSE

In this scoping review the Kales, Gitlin and Lykestos framework is used to answer the question: What high quality evidence exists for the patient, caregiver and environmental determinants of five specific BPSD: aggression, agitation, apathy, depression and psychosis?

METHOD

An a priori review protocol was developed; 692 of 6013 articles retrieved in the search were deemed eligible for review. Gough's Weight of Evidence Framework and the Cochrane Collaboration's tool for assessing risk of bias were used. The findings from 56 high quality/low bias articles are summarized.

DISCUSSION

Each symptom had its own set of determinants, but many were common across several symptoms: neurodegeneration, type of dementia, severity of cognitive impairments, and declining functional abilities, and to a lesser extent, caregiver burden and communication.

CONCLUSION

Research and policy implications are relevant to the National Plan to Address Alzheimer's Disease.

Marijuana Use Is Associated with Behavioral Approach and Depressive Symptoms in Adolescents and Emerging Adults

BACKGROUND

Repeated CB1 binding due to THC results in downregulation of the endocannabinoid system in cortex and limbic regions, perhaps disrupting frontolimbic functioning. This is particularly a concern in young adults who are still undergoing neurodevelopment in frontal and limbic regions. Such disruptions may be linked to increased depressive symptoms, anxiety symptoms, and executive dysfunction, and decreased behavioral approach.

OBJECTIVES

Here we examine the influence of young adult marijuana use on anxiety, depressive symptoms, behavioral approach, and executive dysfunction. The influence of alcohol and gender were also assessed.

METHODS

84 participants (42 MJ, 42 controls) aged 18-25 were balanced for gender (39 F). Exclusion criteria included: MRI contraindications, left handed, comorbid Axis-I disorders, major medical or neurologic disorders, prenatal issues, or prenatal alcohol/illicit drug exposure, or excessive other drug use. Participants completed the FrsBE, BIS/BAS, State-Trait Anxiety Inventory (State), and BDI-II. Multiple regressions were run to predict anxiety, depressive symptoms, behavioral approach, and executive dysfunction from MJ group status, past year alcohol use, gender, and MJ*gender interactions, controlling for cotinine and ecstasy.

RESULTS

MJ group predicted increased depressive symptoms (p =.049). Decreased fun-seeking (p =.04), reward response (p =.01), and BAS total (p =.01) were predicted by MJ group. Gender predicted decreased reward responsiveness in females (p =.049) and decreased BIS in females (p =.03). Female marijuana users had increased anxiety symptoms (p =.04) and increased disinhibition (p =.04). Increased cotinine predicted increased drive (p =.046), reward responsiveness (p =.008) and BAS Total (p =.02). Apathy and Executive Dysfunction were not predicted by any measures. All results had small effect sizes.

CONCLUSIONS/IMPORTANCE

Depressive symptoms were greater in MJ users, while behavioral approach was decreased. Cotinine levels predicted increased behavioral approach. Female MJ users also had greater anxiety and disinhibition. In sum, these findings suggest sub-clinical threshold deficits related to regular marijuana use that are indicative of a need to prevent marijuana use in adolescents and young adults.

Dementia Family Caregivers' Willingness to Pay for an In-home Program to Reduce Behavioral Symptoms and Caregiver Stress

OBJECTIVES

Our objective was to determine whether family caregivers of people with dementia (PwD) are willing to pay for an in-home intervention that provides strategies to manage behavioral symptoms and caregiver stress and to identify predictors of willingness-to-pay (WTP).

METHODS

During baseline interviews of a randomized trial and before treatment assignment, caregivers were asked how much they were willing to pay per session for an eight-session program over 3 months. We stratified the sample into those who refused to provide a WTP, those willing to pay $US0, and those willing to pay > $US0. We used a two-part model, controlling for demographic characteristics, to predict adjusted mean WTP and to examine associations between WTP, clinical features (cognition, function, behavioral symptoms), and time spent assisting PwD with daily activities. First, we used logistic regression to model the probability a caregiver was willing to pay > $US0. Second, we used a generalized linear model (log link and Gamma distribution) to estimate the amount caregivers were willing to pay conditional on WTP > $US0.

RESULTS

Of 250 dyads enrolled, 226 (90%) had complete data and were included in our analyses. Of 226 dyads, 26 (11%) refused to provide a WTP value, 72 (32%) were willing to pay $US0, and 128 (57%) were willing to pay > $US0. In the combined model, mean adjusted WTP was $US36.00 (95% confidence interval [CI] 26.72-45.27) per session. Clinical features were not significantly associated with WTP. One additional hour providing PwD assistance was associated with a $US1.64 (95% CI 0.23-3.04) increase in WTP per session.

CONCLUSION

As caregivers spend more time assisting with daily activities, they are willing to pay more for a supportive program.

CLINICAL TRIAL REGISTRATION NUMBER

NCT01892579.

SHARING Choices: A Pilot Study to Engage Family in Advance Care Planning of Older Adults With and Without Cognitive Impairment in the Primary Care Context

CONTEXT

Few advance care planning (ACP) interventions proactively engage family or address the needs of older adults with and without cognitive impairment in the primary care context.

OBJECTIVES

To pilot a multicomponent intervention involving: an introductory letter describing a new clinic initiative and inviting patients to complete a patient-family pre-visit agenda-setting checklist, share their electronic health information with family, and talk about their wishes for future care with a trained ACP facilitator (SHARING Choices).

METHODS

SHARING Choices was delivered to 40 patient-family dyads from 3 primary care clinics. Facilitators completed post-ACP reports. Patient and family participants completed baseline and 6-week surveys.

RESULTS

Patients were on average 75 years (range 65-90). Family were spouses (85.0%) or adult children (15.0%). At 6 weeks, nearly half of dyads participated in ACP conversations (n = 19) or used the agenda-setting checklist (n = 17), one-third (n = 13) registered family to access the patient's portal account, and most (n = 28) provided the primary care team with a new or previously completed advance directive. Of 12 patients who screened positive for cognitive impairment, 9 completed ACP conversations and 10 provided the clinic with an advance directive. ACP engagement, measured on a 4-point scale, was comparatively lower at baseline and 6 weeks among family (3.05 and 3.19) than patients (3.56 and 3.54). Patients remarked that SHARING Choices clarified communication and preferences while family reported a better understanding of their role in ACP and communication.

CONCLUSION

SHARING Choices was acceptable among older adults with and without cognitive impairment and may increase advance directive completion.

A longitudinal evaluation of family caregivers' willingness to pay for an in-home nonpharmacologic intervention for people living with dementia: results from a randomized trial

OBJECTIVE

To determine the willingness-to-pay (WTP) of family caregivers to learn care strategies for persons living with dementia (PLwD).

DESIGN

Randomized clinical trial.

SETTING

Community-dwelling PLwD and their caregivers (dyads) in Maryland and Washington, DC.

PARTICIPANTS

250 dyads.

INTERVENTION

Tailored Activity Program (TAP) compared to attention control. TAP provides activities tailored to the PLwD and instructs caregivers in their use.

MEASUREMENT

At baseline, 3 and 6 months, caregivers were asked their WTP per session for an 8-session 3-month in-home nonpharmacologic intervention to address behavioral symptoms and functional dependence.

RESULTS

At baseline, 3 and 6 months, caregivers assigned to TAP were willing to pay $26.10/session (95%CI:$20.42, $33.00), $28.70 (95%CI:$19.73, $39.30), and $22.79 (95%CI: $16.64, $30.09), respectively; attention control caregivers were willing to pay $37.90/session (95%CI: $27.10, $52.02), $30.92 (95%CI: $23.44, $40.94), $27.44 (95%CI: $20.82, $35.34), respectively. The difference in baseline to 3 and 6 months change in WTP between TAP and the attention control was $9.58 (95%CI: -$5.00, $25.47) and $7.15 (95%CI: -$5.72, $21.81). The difference between TAP and attention control in change in the proportion of caregivers willing to pay something from baseline to 3 and 6 months was -12% (95%CI: -28%, -5%) and -7% (95%CI:-25%, -11%), respectively. The difference in change in WTP, among caregivers willing to pay something, between TAP and attention control from baseline to 3 and 6 months was $17.93 (95%CI: $0.22, $38.30) and $11.81 (95%CI: -$2.57, $28.17).

CONCLUSIONS

Family caregivers are willing to pay more for an intervention immediately following participation in a program similar to which they were asked to value.

Sharing health care wishes among older adults with cognitive impairment in primary care: Results from a randomized controlled trial

INTRODUCTION

Best practices for conducting advance care planning (ACP) among persons with cognitive impairment exist, but evidence-based models are lacking for the primary care setting.

METHODS

We tested a remote multicomponent ACP model (SHARE) versus minimally enhanced usual care in 273 person-family dyads from eight primary care practices.

RESULTS

Mean patient age was 88.0 years, 85 (31.1%) were Black/Latino; 189 (69.2%) had moderate-to-severe cognitive impairment. Most (101/145; 69.6%) intervention dyads engaged in ACP. At follow-up, no treatment effect was observed for care partner-reported quality of communication about end-of-life care at 6 or 12 months, but intervention patients reported better quality of communication about end-of-life care at 12 months. Intervention care partners and patients reported greater readiness to engage in ACP at 6 and 12 months, respectively, and increased completion of key aspects of ACP.

DISCUSSION

SHARE supported key aspects of ACP processes and communication about end-of-life care.

HIGHLIGHTS

Primary care-based models of ACP for persons with dementia are lacking. Involving persons with cognitive impairment in remote ACP is feasible with care partner involvement. Results indicate benefit for aspects of ACP processes and communication about end-of-life care.

Developing archetypes for key roles in a pragmatic trial: implementing human-centered design to promote advance care planning in primary care

BACKGROUND

Archetypes are representations of a group of people with shared behaviors, attitudes, and characteristics. The design and use of archetypes have potential application to increase partnership and support when embedding and scaling interventions but methodological approaches have not been developed.

OBJECTIVE

To describe the methodology of designing archetypes for use in a pragmatic trial of advance care planning in the primary care context, SHARING Choices ((NCT04819191). We present resulting archetypes representing three key roles (primary care champion, advance care planning facilitator, and patient) in our pragmatic trial.

METHODS

Our process for developing archetypes involved 4 steps: 1) Identify roles for archetype development, 2) Identify Shareholders and Data Sources for Archetype Development, 3) Generate unique archetypes and their distinguishing traits, and 4) Iteratively refine archetypes through exposure, scrutiny, and shareholder input. We also developed a process map to communicate our methodology.

RESULTS

We created 6 distinct archetypes for the primary care champion role, 5 archetypes for the advance care planning facilitator role and 6 archetypes for the patient role. For each archetype we described strengths, challenges, prevailing emotions, and successful approaches to collaboration (e.g., "what works for me"). Unique opportunities for synergy between archetypes (such as with facilitator and champion) and potential challenges between archetypes (such as for facilitator and patient) suggest ways to improve training and support of key roles.

DISCUSSION

Our process for creating archetypes for use in implementation research was iterative and informative in discussion of implementation with shareholders. We expect this methodology to be useful for anticipating and analyzing many aspects of implementation.

Perceived Barriers and Facilitators of Implementing a Multicomponent Intervention to Improve Communication With Older Adults With and Without Dementia (SHARING Choices) in Primary Care: A Qualitative Study

INTRODUCTION

Implementing patient- and family-centered communication strategies has proven challenging in primary care, particularly for persons with dementia. To address this, we designed SHARING Choices, a multicomponent intervention combining patient and family partnered agenda setting, electronic portal access, and supports for advance care planning (ACP). This qualitative descriptive study describes factors affecting SHARING Choices implementation within primary care.

METHODS

Semi-structured interviews or focus groups with patient/family dyads (family, friends, unpaid caregivers) and primary care stakeholders (clinicians, staff, administrators) elicited perceived barriers and facilitators of SHARING Choices implementation. Field notes and interview transcripts were coded using template analysis along the Consolidated Framework for Implementation Research (CFIR) constructs. Content analysis identified themes not readily categorized within CFIR.

RESULTS

About 22 dyads, including 14 with cognitive impairment, and 30 stakeholders participated in the study. Participants were receptive to the SHARING Choices components. Enablers of SHARING Choices included adaptability of the intervention, purposive engagement of family (particularly for patients with dementia), consistency with organizational priorities, and the relative advantage of SHARING Choices compared to current practices. Perceived barriers to implementation included intervention complexity, space constraints, workflow, and ACP hesitancy. The ACP facilitator was perceived as supportive in addressing individual and organizational implementation barriers including patient health and technology literacy and clinician time for ACP discussions.

CONCLUSIONS

Patients, family, and primary care clinicians endorsed the objectives and individual components of SHARING Choices. Strategies to enhance adoption were to simplify materials, streamline processes, leverage existing workflows, and embed ACP facilitators within the primary care team.

Assessing Advance Care Planning Fidelity within the Context of Cognitive Impairment: The SHARE Trial

CONTEXT

Advance care planning (ACP) is critical among primary care patients with cognitive impairment, but few interventions have tested ACP with this population.

OBJECTIVE

Describe the development and evaluation of a tool for assessing ACP fidelity within the context of cognitive impairment, including inter-rater reliability, convergent validity, and overall fidelity using clinical trial data.

DESIGN

SHARE is a multicomponent intervention inclusive of facilitated ACP conversations. From a two group, single blind, randomized controlled trial, recorded ACP conversations were rated for fidelity. 145 primary care patients and their care partners were randomized to receive the intervention. Participating patients were 80+ years, had a care partner, and indications of cognitive impairment. An ACP Fidelity Checklist was developed with three subscales: Meeting Set-Up; ACP Meeting Topics; and Communication Skills. Scores were converted to percentages (100% = perfect fidelity) with a target of ≥80% fidelity. A post-ACP meeting report completed by ACP facilitators was used to assess convergent validity of the checklist. Intra-class correlation (ICC) was to evaluate inter-rater reliability.

RESULTS

ACP conversations averaged 33.6 minutes (SD = 14.1). The mean fidelity score across N = 91 rated meetings was 82.9%, with a range of 77.3%-90.6% for subscales. 63.7% of meetings achieved a rating of ≥80%. Cognitive function was positively associated with patient participation (rho = .59, P < 0.001). For checklist items, ICC scores ranged from 0.43-0.96. Post-ACP meeting form scores were correlated with the checklist Meeting Topics subscale (r = 0.36, P = 0.001).

CONCLUSIONS

Assessing the fidelity of ACP conversations involving primary care patients living with cognitive impairment and their care partners is feasible.

Sharing Health Care Wishes in Primary Care (SHARE) among older adults with possible cognitive impairment in primary care: Study protocol for a randomized controlled trial

OBJECTIVE

Little is known about effective strategies to improve advance care planning (ACP) for persons with cognitive impairment in primary care, the most common setting of care. We describe a randomized controlled trial to test the efficacy of a multicomponent communication intervention, "Sharing Healthcare Wishes in Primary Care" (SHARE).

PARTICIPANTS

Planned enrollment of 248 dyads of adults 80 years and older with possible cognitive impairment and their care partner, from primary care clinics at 2 Mid-Atlantic health systems.

METHODS

The treatment protocol encompasses an introductory letter from the clinic; access to a designated facilitator trained in ACP; person-family agenda-setting to align perspectives about the family's role; and print education. The control protocol encompasses minimally enhanced usual care, which includes print education and a blank advance directive. Randomization occurs at the individual dyad-level. Patient and care partner surveys are fielded at baseline, 6-, 12-, and 24- months. Fidelity of interventionist delivery of the protocol is measured through audio-recordings of ACP conversations and post-meeting reports, and by ongoing monitoring and support of interventionists.

OUTCOMES

The primary outcome is quality of end-of-life care communication at 6 months; secondary outcomes include ACP process measures. An exploratory aim examines end-of-life care quality and bereaved care partner experiences for patients who die by 24 months.

CONCLUSIONS

Caregiver burden, clinician barriers, and impaired decisional capacity amplify the difficulty and importance of ACP discussions in the context of cognitive impairment: this intervention will comprehensively examine communication processes for this special subpopulation in a key setting of primary care.

REGISTRATION

ClinicalTrials.gov: NCT04593472.

Advance Care Planning, End-of-Life Preferences, and Burdensome Care: A Pragmatic Cluster Randomized Clinical Trial

Importance

Primary care is a key setting for advance care planning (ACP).

Objective

To test the effects of a multicomponent primary care-based ACP intervention (SHARING Choices) on documented end-of-life preferences and potentially burdensome care at end of life.

Design, Setting, and Participants

This pragmatic cluster randomized clinical trial in primary care practices from 2 health systems was conducted between March 2021 and April 2022. Adults 65 years and older with a scheduled in-person or telehealth visit with clinicians from participating practices were eligible for inclusion.

Interventions

The treatment protocol encompassed an introductory letter from the clinic, access to a designated facilitator trained in ACP, a person-family agenda-setting checklist, shared access to the patient portal, a mailed advance directive, and print education. The control protocol encompassed usual care.

Main Outcomes and Measures

Primary outcomes included (1) new electronic health record-documented end-of-life preferences (advance directive or medical orders for life-sustaining treatment) at 12 months among those without documentation at baseline and (2) receipt of potentially burdensome care within 6 months of death among a subsample of Maryland residents with serious illness who died within 18 months of study entry from health information exchange data.

Results

There were 19 practices in the intervention arm and 32 practices in the control arm. The study included 22 949 patients in the intervention group (13 575 women [59.2%]; mean [SD] age, 73.9 [7.2] years; 1674 [7.3%] with diagnosed dementia) and 41 966 in the control group (25 057 women [59.7%]; mean [SD] age, 74.0 [7.1] years; 3223 [7.9%] with diagnosed dementia). A total of 17 907 patients (27.6%) were Black, 1373 (2.1%) were Hispanic, 40 345 (62.2%) were White, and 5290 (8.2%) were another race (including American Indian or Alaska Native, Asian, and Native Hawaiian or Other Pacific Islander, and missing race). Grant-funded facilitators initiated 17 931 outreach attempts by phone (13 963 [77.9%]) and through the patient portal (3968 [22.1%]) to patients from intervention practices, and 1181 engaged in facilitator-led ACP conversations. New end-of-life preferences were documented for 2190 of 18 314 patients in the intervention arm (12.0%) and 2130 of 32 321 in the control arm (6.6%). This treatment effect was significant for the overall cohort (adjusted odds ratio, 2.15; 95% CI, 2.02-2.30) and present but attenuated for Black patients, those 75 years and older, and those diagnosed dementia. Among 1498 Maryland resident decedents, potentially burdensome care was higher in the intervention group (150 of 521 [28.8%] vs 204 of 977 [20.9%]; adjusted odds ratio, 1.40; 95% CI, 1.08-1.81).

Conclusions and Relevance

In this pragmatic cluster randomized clinical trial, the SHARING Choices intervention increased new documentation of end-of-life preferences but also increased potentially burdensome care at end of life. Mixed findings underscore the importance of comprehensive support for those with serious illness and prioritizing patient-relevant outcomes in ACP interventional research.

Trial Registration

ClinicalTrials.gov Identifier: NCT04819191.