Effectiveness of Caregiver Interventions on Patient Outcomes in Adults With Dementia or Alzheimer's Disease: A Systematic Review

Cognitive behavioural treatment for mild Alzheimer's patients and their caregivers (CBTAC): results of a randomised controlled trial

OBJECTIVES

This study aimed to evaluate the effects of a multicomponent psychotherapy programme for people with mild Alzheimer's dementia (AD) and their caregivers on depression and related neuropsychiatric symptoms.

METHOD

The cognitive behavioural therapy (CBT)-based treatment consisted of 25 weekly sessions, including behavioural activation, behaviour management, interventions for the caregiver, reminiscence, couples counselling, and cognitive restructuring. 41 participants and their caregivers were randomised to either the CBT or the control group, which received treatment-as-usual (TAU). Follow-ups took place at 6 and 12 months posttreatment. The primary outcome was depression in the patient with AD. The secondary outcomes were apathy, other neuropsychiatric symptoms, functional abilities, quality of life, and quality of the relationship with the caregiver.

RESULTS

Linear mixed models revealed a statistically significant superiority of CBT regarding clinician-rated depression at the 12-month follow-up with large effect sizes (within-subject d = 1.22, between-subject d = 1.00). Effect sizes were only moderate for self-rated depression and small for informant-rated depression. There was also a significant advantage for CBT regarding clinician-rated apathy, relationship quality, and informant-rated quality of life (QoL) but not for the other neuropsychiatric symptoms or self-rated QoL.

CONCLUSION

The results are very encouraging and support an adequately powered multicentre study.

Trial registration: ClinicalTrials.gov NCT01273272. Date of registration: 3 Jan 2011.

Transitional Palliative Care for Family Caregivers: Outcomes From a Randomized Controlled Trial

CONTEXT

Patients receiving inpatient palliative care often face physical and psychological uncertainties during transitions out of the hospital. Family caregivers often take on responsibilities to ensure patient safety, quality of care, and extend palliative care principles, but often without support or training, potentially compromising their health and well-being.

OBJECTIVES

This study tested an eight-week intervention using video visits between palliative care nurse interventionists and caregivers to assess changes in caregiver outcomes and patient quality of life.

METHODS

This randomized controlled trial, conducted from 2018 to 2022, enrolled adult caregivers in rural or medically underserved areas in Minnesota, Wisconsin, and Iowa. Eligible caregivers included those caring for patients who received inpatient palliative care and transitioned out of the hospital. The intervention group received teaching, guidance, and counseling from a palliative care nurse before and for eight weeks after hospital discharge. The control group received monthly phone calls but no intervention. Caregiver outcomes included changes in depression, burden, and quality of life, and patient quality of life, as reported by the caregiver.

RESULTS

Of those consented, 183 completed the intervention, and 184 completed the control arm; 158 participants had complete baseline and eight-week data. In unadjusted analyses, the intervention group and their care recipients showed statistically significant improvements in quality of life compared to the control group. Improvements persisted in adjusted analyses, and depression significantly improved. No differences in caregiver burden were observed.

CONCLUSION

Addressing rural caregivers' needs during transitions in care can enhance caregiver outcomes and improve patient quality of life.

A Methodological Approach for Documenting Multi-Component Interventions Targeting Family Caregivers

Managing the complex care needs of seriously ill patients transitioning from hospital to home can have detrimental effects on family caregivers (FCG). Multi-component interventions tailored to FCG needs are most effective at reducing caregiver burden, distress, and depression. However, gaps exist in determining best methods to assess, document, and analyze intervention components for FCGs. Common methods used to capture patient data during transitions in care may not be appropriate or allowed for FCG needs. As such, we present a methodological approach for electronically capturing, reporting, and analyzing multiple intervention components. This approach uses a standardized terminology and pathway for tailoring intervention components in real time while evaluating intervention effects across time. We use examples from a randomized controlled trial to illustrate the benefits of the current approach for analyzing the effectiveness of multi-component interventions in the context of caregiving research.

How both positive and burdensome caregiver experiences are associated with care recipient cognitive performance: Evidence from the National Health and Aging Trends Study and National Study of Caregiving

Introduction

Being an informal caregiver to a person with chronic disease, including persons living with dementia (PLWD), is a big role to take on and many caregivers experience both substantial burden and emotional reward related to caregiving. Care recipient factors (e.g., behavioral symptoms) are associated with caregiver experience. However, the relationship between caregiver and care recipient is bidirectional, so it is likely that caregiver factors impact the care recipient, though few studies have investigated this.

Methods

In the 2017 round of the National Health and Aging Trends Study (NHATS) and National Study of Caregiving (NSOC), we studied 1,210 care dyads--170 PLWD dyads and 1,040 without dementia dyads. Care recipients completed immediate and delayed word list memory tasks, the Clock Drawing Test, and a self-rated memory rating, while caregivers were interviewed about their caregiving experiences using a 34-item questionnaire. Using principal component analysis, we created a caregiver experience score with three components-Practical Care Burden, Positive Care Experiences, and Emotional Care Burden. We then investigated the cross-sectional association between caregiver experience components and care recipient cognitive test performance using linear regression models adjusted for age, sex, education, race, and depressive and anxiety symptoms.

Results

Among PLWD dyads, a higher caregiver Positive Care Experiences score was associated with better care recipient performance on the delayed word recall (B = 0.20, 95% CI 0.05, 0.36) and Clock Draw (B = 0.12, 95% CI 0.01, 0.24) tests while higher Emotional Care Burden score was associated with worse self-rated memory score (B = -0.19, 95% CI -0.39, -0.003). Among participants without dementia, higher Practical Care Burden score was associated with poorer care recipient performance on the immediate (B = -0.07, 95% CI -0.12, -0.01) and delayed (B = -0.10, 95% CI -0.16, -0.05) word recall tests.

Discussion

These findings support the concept that caregiving is bidirectional within the dyad and that positive variables can positively impact both members of the dyad. This suggests that caregiving interventions should target the caregiver and recipient both individually and as a unit, with the goal of holistically improving outcomes for both.

Dynamic structural equation modelling evaluating the progressively lowered stress threshold as an explanation for behavioural symptoms of dementia

Aim

To evaluate the progressively lowered stress threshold (PLST) conceptual model as an explanation for behavioural symptoms of dementia and test several of its hypothesized propositions. The PLST model suggests that due to impairments in coping, persons living with dementia have a reduced threshold for stress and respond with more behavioural symptoms of dementia as stress accumulates throughout the day.

Design

Intensive longitudinal design.

Methods

A sample of N = 165 family caregivers completed brief daily diary surveys for 21 days between the dates of 7/2019 and 8/2020, reporting on a total of 2841 days. Dynamic structural equation modelling was used as the analytic technique to examine the impact of caregiver and care recipient environmental stressors on the diversity of behavioural symptoms of dementia to account for the nested data structure and autoregressive relationships.

Findings

Results show direct relationships between environmental stressors and diversity of behavioural symptoms of dementia that same day and the following day.

Conclusion

Findings provide support for the PLST model propositions. Further, findings suggest an extension to the conceptual model is warranted given evidence of an exposure/recovery trajectory and the lagged effects of stress exposure on behavioural symptoms of dementia presentation.

Impact

This study tested whether a commonly used nursing model does in fact explain the occurrence of behavioural symptoms of dementia. The main findings support using the model as an intervention framework and suggest the model should be adapted to consider recovery trajectories. Since behavioural symptoms of dementia represent complex and dynamic temporal phenomena, traditional longitudinal assessments and analyses are an insufficient measurement modality for testing models. Findings inform the design of environmental‐modification type interventions for behavioural symptoms of dementia management and the methods to evaluate such interventions.

Effectiveness of caregiver non-pharmacological interventions for behavioural and psychological symptoms of dementia: An updated meta-analysis

BACKGROUND

The behavioural and psychological symptoms of dementia (BPSD) have significant negative effects on the health of both patients with dementia and their caregivers. However, the reported effectiveness of non-pharmacological interventions targeting caregivers of patients with dementia for BPSD is inconsistent.

METHODS

We systematically searched the databases PubMed, PsycINFO, CINAHL, Embase, Cochrane Library and four Chinese databases from 2010 through April 2021. The Standardised mean difference (SMD) was calculated using random-effects models. Risk of bias in individual studies was assessed using Cochrane Collaboration's tool, and the certainty of evidence was assessed using the five GRADE criteria.

RESULTS

Thirty-one randomised controlled trials (RCTs) involving 3501 dyads were included. The meta-analysis indicated that non-pharmacological interventions showed small but significant effects on both BPSD in patients with dementia (SMD = -0.14; 95% CI, -0.22 to -0.06; P = 0.001) and caregiver reactions to BPSD (SMD = -0.16; 95% CI, -0.25 to -0.07; P = 0.001). The effect sizes of BPSD in patients at follow-up (SMD = -0.24; 95% CI, -0.38 to -0.09; P = 0.002) were larger than those at post-test. Tailored interventions were associated with more substantial reductions in BPSD in patients (SMD = -0.24; 95% CI, -0.37 to -0.11; P < 0.001) than standardised interventions (SMD = -0.07; 95% CI, -0.18 to 0.04; P = 0.218).

CONCLUSIONS

Non-pharmacological interventions targeting caregivers have the potential to reduce BPSD in patients with dementia and improve caregiver negative reactions to BPSD. Moreover, tailored interventions seemed to be more effective in reducing BPSD, and more significant improvements in BPSD may be observed in long-term follow-up.

The relationship between perceived support and depression in spousal care partners: a dyadic approach

OBJECTIVES

Caregiving within a spousal partnership marks a novel relationship stage for couples. Caregiving introduces new stressors and affects couples' ability to cope, and potentially alters perceptions of emotional support. Prior research on older married couples illustrates how perceived support not only affects an individual's mental health, but also that of their partner. To date, the dyadic relationship between emotional support and mental health is largely unexamined among caregiving partners, where support expectations may differ.

METHOD

Actor partner interdependence models using linear mixed modeling were applied to data from spouses where one partner received caregiving within the 2014 and 2016 waves of the Health and Retirement Study. We examined the cross-sectional and lagged associations between perceived emotional support and strain from a spouse on actor and partner depression scores, as well as whether one was the caregiver or the care recipient moderated associations.

RESULTS

More positive perceptions of support were associated with lower depression scores for oneself (b= -0.55, p < 0.001) and one's partner (b= -0.24, p < 0.001). Actor effects-how one's own perceptions of support associate with one's own depressive symptomology-were stronger for care recipients than for caregivers (b= -0.83, p < 0.001 v. b= -0.26, p < 0.05). Higher perceptions of strain were also associated with higher depression scores for oneself (b = 0.57, p < 0.001) and one's partner (b = 0.39, p < 0.001), associations that remained even in lagged models.

CONCLUSIONS

The observation of both actor and partner effects in this study suggests opportunities to improve care recipient outcomes through intervention with caregivers or both members of the care dyad.

Differences in Burden Severity in Adult-Child Family Caregivers and Spousal Caregivers of Persons with Dementia

Researchers are continuing to focus on the nature and sources of burden of family caregivers of persons living with dementia. Caregiving stress and burden are assessed and addressed by social workers, including at high-risk times such as hospitalization. This study tested whether adult-child family caregivers experience greater perceived burden than spousal caregivers, accounting for risks of acute stress which can accompany hospitalization for their care recipient, where social workers may be meeting with family caregivers for the first time. Family caregivers (N = 76; n = 42 adult-child; n = 34 spouse) were recruited during care-recipient clinical treatment. The settings of care included an outpatient memory care program and an inpatient geriatric psychiatry service. Results showed that adult-child caregivers reported greater burden as compared with spousal caregivers, but no differences regarding depressive symptoms, perceived stress, or grief. After controlling for demographics and location of care, being an adult-child caregiver remained a predictor of greater burden severity. Being an adult-child family caregiver may place an individual at increased risk for experiencing high burden. These findings suggest socials workers should consider how adult-child caregivers may benefit from strategies to address and reduce burden, beyond those typically offered to spousal caregivers.

Interventions to Prevent or Delay Long-Term Nursing Home Placement for Adults with Impairments-a Systematic Review of Reviews

BACKGROUND

With continued growth in the older adult population, US federal and state costs for long-term care services are projected to increase. Recent policy changes have shifted funding to home and community-based services (HCBS), but it remains unclear whether HCBS can prevent or delay long-term nursing home placement (NHP).

METHODS

We searched MEDLINE (OVID), Sociological Abstracts, PsycINFO, CINAHL, and Embase (from inception through September 2018); and Cochrane Database of Systematic Reviews, Joanna Briggs Institute Database, AHRQ Evidence-based Practice Center, and VA Evidence Synthesis Program reports (from inception through November 2018) for English-language systematic reviews. We also sought expert referrals. Eligible reviews addressed HCBS for community-dwelling adults with, or at risk of developing, physical and/or cognitive impairments. Two individuals rated quality (using modified AMSTAR 2) and abstracted review characteristics, including definition of NHP and interventions. From a prioritized subset of the highest-quality and most recent reviews, we abstracted intervention effects and strength of evidence (as reported by review authors).

RESULTS

Of 47 eligible reviews, most focused on caregiver support (n = 10), respite care and adult day programs (n = 9), case management (n = 8), and preventive home visits (n = 6). Among 20 prioritized reviews, 12 exclusively included randomized controlled trials, while the rest also included observational studies. Prioritized reviews found no overall benefit or inconsistent effects for caregiver support (n = 2), respite care and adult day programs (n = 3), case management (n = 4), and preventive home visits (n = 2). For caregiver support, case management, and preventive home visits, some reviews highlighted that a few studies of higher-intensity models reduced NHP. Reviews on other interventions (n = 9) generally found a lack of evidence examining NHP.

DISCUSSION

Evidence indicated no benefit or inconsistent effects of HCBS in preventing or delaying NHP. Demonstration of substantial impacts on NHP may require longer-term studies of higher-intensity interventions that can be adapted for a variety of settings. Registration PROSPERO # CRD42018116198.

Function and Caregiver Support Associated With Readmissions During Home Health for Individuals With Dementia

OBJECTIVE

The purpose of this study was to determine the association between mobility, self-care, cognition, and caregiver support and 30-day potentially preventable readmissions (PPR) for individuals with dementia.

DESIGN

This retrospective study derived data from 100% national Centers for Medicare and Medicaid Services data files from July 1, 2013, through June 1, 2015.

PARTICIPANTS

Criteria from the Home Health Claims-Based Rehospitalization Measure and the Potentially Preventable 30-Day Post Discharge Readmission Measure for the Home Health Quality Reporting Program were used to identify a cohort of 118,171 Medicare beneficiaries.

MAIN OUTCOME MEASURE

The 30-day PPR rates with associated 95% CIs were calculated for each patient characteristic. Multilevel logistic regression was used to study the relationship between mobility, self-care, caregiver support, and cognition domains and 30-day PPR during home health, adjusting for patient demographics and clinical characteristics.

RESULTS

The overall rate of 30-day PPR was 7.6%. In the fully adjusted models, patients who were most dependent in mobility (odds ratio [OR], 1.59; 95% CI, 1.47-1.71) and self-care (OR, 1.73; 95% CI, 1.61-1.87) had higher odds for 30-day PPR. Patients with unmet caregiving needs had 1.11 (95% CI, 1.05-1.17) higher odds for 30-day PPR than patients whose caregiving needs were met. Patients with cognitive impairment had 1.23 (95% CI, 1.16-1.30) higher odds of readmission than those with minimal to no cognitive impairment.

CONCLUSIONS

Decreased independence in mobility and self-care tasks, unmet caregiver needs, and impaired cognitive processing at admission to home health are associated with risk of 30-day PPR during home health for individuals with dementia. Our findings indicate that deficits in mobility and self-care tasks have the greatest effect on the risk for PPR.

A Randomized Controlled Trial of Emotion Regulation Therapy for Psychologically Distressed Caregivers of Cancer Patients

BACKGROUND

Previous cognitive behavioral therapies for informal caregivers (ICs) have produced negligible effects. The purpose of this study was to evaluate, in a randomized controlled trial, the efficacy of Emotion Regulation Therapy adapted for caregivers (ERT-C) on psychological and inflammatory outcomes in psychologically distressed ICs and the cancer patients cared for.

METHODS

A total of 81 ICs with elevated psychological distress were randomly assigned to ERT-C or a waitlist condition and assessed pre-, mid-, and post-treatment. In 52 cases, the patient cared for by the IC was included. Patients did not receive ERT-C. Both the ERT-C and waitlist groups were followed 3 and 6 months post-treatment. Data were analyzed with multilevel models, and P values were two-sided.

RESULTS

Compared with ICs in the waitlist condition, ICs in the ERT-C condition experienced medium to large statistically significant reductions in psychological distress (Hedge's g = 0.86, 95% confidence interval [CI] = 0.40 to 1.32, P < .001), worry (g = 0.96, 95% CI = 0.50 to 1.42, P < .001), and caregiver burden (g = 0.53, 95% CI = 0.10 to 1.99, P = .007) post-treatment. No statistically significant effects were found for rumination (g = 0.24, 95% CI = -0.20 to 0.68, P = .220). Results concerning caregiver burden were maintained through 6 months follow-up. Although the effects on psychological distress and worry diminished, their end-point effects remained medium to large. No statistically significant effects on systemic inflammation were detected (C-reactive protein: g = .17, 95% CI = -0.27 to 0.61, P = .570; interleukin-6: g = .35, 95% CI = -0.09 to 0.79, P = .205; tumor necrosis factor-alpha: g = .11, 95% CI = -0.33 to 0.55, P = .686). Patients whose ICs attended ERT-C experienced a large increase in quality of life post-treatment (g = 0.88, 95% CI = 0.18 to 1.58, P = .017).

CONCLUSIONS

To our knowledge, this is the first randomized controlled trial evaluating the efficacy of ERT-C for ICs. Given the previous disappointing effects of other cognitive behavioral therapies for this population, the present findings are very encouraging. Identifying ICs with elevated psychological distress and providing them with relevant psychotherapy appears an important element of comprehensive cancer care.

The Effectiveness of Psychoeducational and Financial Intervention to Support Caregivers of Individuals With Alzheimer's Disease in Poland

BACKGROUND AND OBJECTIVES

The goal of this study is to create data-driven guidelines and tools for caregivers and health care professionals that will enable caregivers to be prepared for future caregiving-related challenges and decrease their levels of stress.

RESEARCH DESIGN AND METHODS

A total of 60 spousal caregivers of individuals with Alzheimer's disease (AD) living in Poland were recruited for this study. The participants were assigned to two different groups. The intervention group was provided with a five-session training focused on teaching coping strategies for managing difficult behaviors and provided with a stipend for a period of 6 months (a financial aid program recently launched by the local agency). A control group was not provided with any of the interventions but asked to complete the questionnaires. The effectiveness of each intervention was assessed at a baseline and 6 months after baseline evaluation.

RESULTS

Caregivers who received financial and educational training reported significantly decreased levels of depression and caregiver burden in comparison to the control group. The majority of caregivers emphasized that caregiving created financial problems and that their work has been underestimated by the government.

DISCUSSION AND IMPLICATIONS

This project addresses several issues of central importance to the success of building research foundation for the interventions. The results have the potential of generating more efficient and personalized interventions that address the needs of the caregiver as they occur, leading to increased knowledge of AD and decreased levels of depression and caregiver burden.

Dementia Caregiving Outcomes: The Impact of Caregiving Onset, Cognitive Impairment and Behavioral Problems

With a projected increase in the prevalence of Alzheimer's disease (AD) and related dementias, family caregiving is steadily increasing. Caring for an individual with AD is characterized as a "career," and within this career are a number of key transitions, including the onset of caregiving. Research reveals a number of negative emotional health outcomes for AD caregivers, including depression and role overload, but less research has examined the influence of key transitions on the emotional adaptation of caregivers. The purpose of this study is to examine how different patterns of caregiving onset (gradual and abrupt) impact emotional health outcomes for AD caregivers. This study also explores how care-recipient cognitive impairment and behavioral problems moderate these relationships. Cross-sectional, quantitative data from 100 caregivers completing self-administered surveys were used. A series of one-way ANOVAs and multiple regression analyses were conducted to address study aims. Results indicate that care-recipient cognition and behavioral problems moderated the relationship between caregiving onset and emotional health outcomes for caregivers who experienced a more abrupt entry into the caregiving role. Results suggest the importance of considering different onset transitions and moderating factors within the caregiving career to target clinical interventions. Implications for social work practice are discussed.