Caregiver burden and psychoeducational interventions in Alzheimer's disease: a review

mHealth based intervention by social care professionals to support family caregivers to persons with dementia living at home in Sweden (Caregiver Connect): a randomized controlled trial

BACKGROUND

The majority of persons with dementia in Sweden reside in their own homes with support from family members. Approximately, 12% of persons with dementia have immigrant background. Within the next 20 years, the number of persons with dementia who are non-ethnic Swedes is said to double. Family caregivers with immigrant backgrounds are noted to receive less support in the community than ethnic Swedes and rate their health status lower than ethnic Swedish peers. The Swedish National Board of Health and Welfare have highlighted the importance of follow-up support for family caregivers with immigrant backgrounds as there is a recognized gap in research and available information tailored to meet the needs of this group.

PURPOSE OF THE STUDY

The purpose of the study is to test effectiveness of an mHealth based intervention through which community social workers can improve caregiving competence of non-European immigrant family caregivers of people with dementia living at home in Sweden. The overarching aim is to reduce caregiver burden and depressive symptoms, and improve quality of life.

METHODS

A randomized controlled trial (RCT) including wait list control group will be performed consisting of an intervention group (A, n = 44) and a wait list control group (B, n = 44), totaling a sample size of 88. On completion of the 10-weeks long intervention in the intervention group, the intervention will be delivered to group B. Effect of the intervention will be analyzed between and within groups over time. The content of the educational component of the intervention is inspired by the iSupport manual developed by the World Health Organization. The contents, in the form of a booklet, aims to equip the family caregivers with structured information on understanding dementia as a condition and its management at home, including self-care guidance designed specifically for family caregivers themselves.

DISCUSSION

Similar telephone-delivered intervention studies targeted for family caregivers to persons with dementia are ongoing in Malaysia and will start in India using the same booklet adapted to the local context. These studies will provide evidence on the effectiveness of using digital technologies to deliver support to those who may not be reached or adequately served by the traditional healthcare system.

TRIAL REGISTRATION

ISRCTN registry, Registration number ISRCTN64235563.

Needs analysis of family caregivers of people living with dementia in Sleman Regency, Yogyakarta

BACKGROUND

Without appropriate support, taking care of people living with dementia may become a burden for family caregivers. Identifying the needs for caregivers can help them minimise the burden of caring and meet quality care for people living with dementia.

METHODS

In the first phase, a content validity test was conducted on the Carers' Needs Assessment of Dementia (CNA-D) in the Indonesian version. The second phase, a sequential explanatory mixed-methods design, was conducted on 65 family caregivers in two stages. The first stage was a cross-sectional study. A correlation test between caregiver problems and caregiver burden was conducted. The caregiver problems that were statistically significant were analyzed to reveal the unmet needs. A needs analysis was also conducted on problems experienced by more than half of the caregivers. In the second stage, we conducted a semi-structured individual interview, and thematic analysis was used to analyze the data.

RESULTS

The result of the validity test of the CNA-D instrument, Indonesian version, obtained a high value for content validity. The main problem of caregivers is a lack of information about dementia; however, it does not have a significant correlation with caregiver burden. The caregiver problem with the highest correlation to caregiver burden is burnout due to caring. More than 50% of caregivers' needs in Sleman Regency were not met in this research. The most essential needs that were not met were counselling and psychotherapy (83.3%-92%). The personal understanding of dementia, spiritual values in caring, cultural values in caring, barriers to accessing healthcare services, and self-care strategies should be considered in fulfilling family caregiver needs.

CONCLUSION

Most of the needs of family caregivers of people living with dementia in Sleman Regency, Yogyakarta, have not been met. Therefore, it requires collaboration with multi-professionals and all stakeholders to fulfil these needs.

Experiences of Families, Staff, Volunteers, and Administrators With Namaste Care for Persons With Advanced Dementia in Canadian Long-Term Care Homes

OBJECTIVE

To explore the experiences of the Namaste Care intervention for persons with advanced dementia (ie, moderate and late-stage) in long-term care (LTC).

DESIGN

A qualitative descriptive design was used. Staff Carers (eg, personal support worker, nurse, or activity aide) delivered Namaste Care with the support of volunteers in a small group. Activities provided during the Namaste Care sessions to enhance quality of life included massages, aromatherapy, music, and snacks/beverages.

SETTING AND PARTICIPANTS

Family carers of residents with advanced dementia, LTC staff, administrators, and volunteers from 2 Canadian LTC homes, located in a midsize metropolitan area, were included.

METHODS

Experiences and acceptability of Namaste Care was assessed through semistructured interviews ranging from 30 to 60 minutes following the 6-month study duration period with family carers, LTC staff, administrators, and volunteers. Thematic analysis was used for interview transcripts.

RESULTS

A total of 16 family carers and 21 LTC staff, administrators, and volunteers participated in the study. Namaste Care was found to be acceptable and successful in enhancing the quality of life of residents due to collaborative efforts of all group of participants. Families, volunteers, and staff noted positive responses in residents, such as smiling and laughing. The program environment supported the development of relationships within the LTC community, which included families, residents, staff, and volunteers.

CONCLUSIONS AND IMPLICATIONS

Namaste Care was perceived by the LTC community as an acceptable intervention for persons with advanced dementia. It was perceived as offering multiple benefits for residents with advanced dementia such as improved communication and mood.

Association between clinical dementia rating and clinical outcomes in Alzheimer's disease

INTRODUCTION

We examined associations between the Clinical Dementia Rating Scale (CDR) and function (Functional Assessment Scale [FAS]), neuropsychiatric symptoms (Neuropsychiatric Inventory Questionnaire [NPI-Q]), and cognitive impairment in Alzheimer's disease (AD).

METHODS

We used data from the National Alzheimer's Coordinating Center Uniform Data Set and defined cognitively unimpaired and AD stages using CDR-global.

RESULTS

Functional and neuropsychiatric symptoms occur as early as the mild cognitive impairment (MCI) phase. The adjusted lest square mean FAS (95% confidence interval [CI]) was lowest in cognitively unimpaired (3.88 [3.66, 4.11] to 5.01 [4.76, 5.26]) and higher with more advanced AD (MCI: 8.17 [6.92, 9.43] to 20.87 [19.53, 22.20]; mild: 18.54 [17.57, 19.50] to 28.13 [27.14, 29.12]; moderate: 26.01 [25.31, 26.70] to 29.42 [28.73, 30.10]). FAS and NPI-Q scores increased steeply with MCI (NPI-Q: 5.55 [4.89, 6.20] to 7.11 [6.43, 7.78]) and mild AD dementia (NPI-Q: 6.66 [5.72, 7.60] to 8.32 [7.32, 9.33]).

DISCUSSION

CDR-global staged AD by capturing differences in relevant outcomes along AD progression.

Highlights

There were strong associations among CDR and the various outcomes relevant to healthcare providers, patients, and their care givers, such as activities of daily living.Overall, activities of daily living, neuropsychiatric symptoms, and cognitive function outcomes deteriorated over time and can be observed in early stages of AD (MCI or mild dementia).Our findings directly inform the current understanding of AD progression and can aid in care planning and benefit assessments of early AD interventions to delay the progression of AD to more advanced stages.

Financial, Legal, and Functional Challenges of Providing Care for People Living With Dementia and Needs for a Digital Platform: Interview Study Among Family Caregivers

BACKGROUND

Alzheimer disease and Alzheimer disease-related dementia represent complex neuropathologies directly challenging individuals, their families, and communities in the United States. To support persons living with dementia, family or informal caregivers often encounter complex financial, psychological, and physical challenges. A widely used solution such as a consolidated web-based assistance or guidance platform is missing, compounding care challenges.

OBJECTIVE

In preparation for designing an internet-based artificial intelligence-driven digital resource platform, a qualitative interview study was conducted to characterize the challenges and needs of family caregivers in the United States.

METHODS

A semistructured interview topic guide in English was developed by engaging community partners and research partnerships. Family caregiver participants were purposefully recruited via various means, such as word of mouth, local dementia community service providers, digital recruitment emails, flyers, and social media. Interested individuals were first invited to complete an eligibility screening survey, and eligible individuals were then contacted to arrange a web-based in-depth interview via Zoom (Zoom Video Communications) from January 1, 2022, to May 31, 2022. A follow-up survey was administered in May 2022 to provide an overview of the participants' demographics, socioeconomic characteristics, and caregiving information. Thematic analysis in a framework approach was used to identify and organize themes and the study findings.

RESULTS

Following the prescreening of 150 eligible respondents, 20% (30/150) individuals completed both the interviews and follow-up survey, allowing for an in-depth look into the challenges, experiences, and expectations of primary caregivers of people living with dementia. Most participants (20/30, 67%) were primary caregivers of persons with dementia, and 93% (28/30) had provided care for at least a year. Most participants were aged >50 years (25/30, 83%), female (23/30, 77%), White (25/30, 83%), and non-Hispanic (27/30, 90%) and held a bachelor's or graduate degree (22/30, 73%). Collectively, all participants acknowledged challenges in caring for people living with dementia. Thematic analyses elicited the challenges of caregiving related to functional care needs and financial and legal challenges. In addition, participants identified the need for an integrative digital platform where information could be supplied to foster education, share resources, and provide community support, enabling family caregivers to improve the quality of care and reducing caregiver burden.

CONCLUSIONS

This study emphasized the difficulties associated with the family caregiver role and the expectations and potential for a supportive web-based platform to mitigate current challenges within the caregiving role.

Design and Implementation of a Clinical Science Specialty Clinic for Adults with Neurological Disorders and Their Caregivers

Mental health problems are common for persons with neurological disorders (PWNDs) and their caregivers (CGs) but often are not adequately treated. Despite this growing need, the training of clinical psychologists typically does not include coursework or practicum experience working with these populations. To address this, a team of faculty, supervisors, and doctoral students in UC Berkeley's Clinical Science program undertook a year-long process that consisted of building a training curriculum that integrated coursework and consultation with visiting experts; providing supervised practicum training with PWNDs and CGs and evaluating training and clinical outcomes. We hoped to prepare students to train other mental health professionals to work with these populations in the future. In this article, we describe the Specialty Clinic with special attention given to the training provided, challenges faced and solutions found, clinic operations and logistics, and lessons learned. We also review key clinical issues and report key indicators of client outcomes. Finally, we evaluate the success of the Specialty Clinic and offer recommendations for others interested in providing these kinds of much needed training and clinical services in this important area.

The Senior Companion Program Plus for African American Caregivers of Persons With Alzheimer Disease and Related Dementias: Protocol for a Randomized Controlled Trial

BACKGROUND

Alzheimer disease and related dementias (ADRD) pose significant challenges as chronic health conditions in the United States. Additionally, there are notable disparities in the diagnosis and prevalence of ADRD among diverse populations. Specifically, African American populations have a higher risk of developing late-onset ADRD than White people, and missed diagnoses of ADRD are more common among older African American populations than older White populations. These disparities also impact African American ADRD family caregivers.

OBJECTIVE

The overall goal of this project is to develop a culturally informed, lay provider psychoeducational intervention named Senior Companion Program Plus (SCP Plus), which is specifically designed for African American ADRD caregivers and is potentially accessible, affordable, and sustainable.

METHODS

In the proposed explanatory sequential mixed methods study, a randomized controlled trial will be used that includes 114 African American family caregivers of a relative with ADRD who will participate in the 3-month SCP Plus program.

RESULTS

The study was funded on September 15, 2018, by the National Institutes of Health (1R15AG058182-01A1). Data collection began on May 16, 2019, but due to COVID-19 restrictions, ended 12 months into the planned 27-month recruitment period on March 31, 2023. The study was completed in June 30, 2023, and currently the results are being analyzed.

CONCLUSIONS

The SCP Plus offers promise as an intervention that utilizes an existing platform for the delivery of a lay provider intervention and offers a novel approach for addressing gaps in accessible, community-based support for caregivers of people with ADRD.

TRIAL REGISTRATION

ClinicalTrials.gov NCT03602391; https://classic.clinicaltrials.gov/ct2/show/NCT03602391.

INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID)

RR1-10.2196/49679.

Supporting Caregivers of Veterans with Dementia

As the number of veterans with dementia continues to increase, support services for those veterans and their caregivers must also increase. Caregivers of veterans with dementia often report high levels of emotional distress in the form of anxiety, exhaustion, and burden that negatively impacts their health and quality of life. This brief descriptive report highlights a Veterans Health Administration (VHA) project in which a social worker trained in palliative care, teaches stress-reduction to caregivers through individual counseling and virtual groups. In two years, 39 caregivers received individual assessment and counseling focused on stress-reduction. Also, five group webinars were held on the topic of self-care that averaged 17 caregivers per group. 24 caregivers completed a survey and results suggested that stress-reduction and self-care may be viable target areas of intervention for caregivers of veterans with dementia in both individual and group formats. More research is needed in this area to improve our knowledge of how stress may be reduced for caregivers and what type of interventions may be effective to help caregivers reduce stress and improve their self-care.

Protocol for scoping review study to map out the existing research in relation to post-traumatic stress symptoms among caregivers of individuals with neurodevelopmental, psychiatric and neurocognitive disorders

INTRODUCTION

The challenges of providing caregiving that impacts the caregiver have been attributed to high levels of intensity and physical strain, burden and distress. This is likely to include emotional and psychological distress as manifested in post-traumatic stress symptoms (PTSS). As this is a new area of investigation among caregivers of individuals with neurodevelopmental, neurocognitive and psychiatric disorders, the extent of the literature for PTSS in these groups of caregivers is limited and unclear. This scoping review aims to map the existing research focusing on key concepts and identifying gaps in relation to PTSS among these caregivers.

METHODS AND ANALYSIS

The scoping review will be guided by Arksey and O'Malley's proposed 5-stage framework. A search for published and unpublished grey literature between years 2005 to 2020 in the electronic databases of CINAHL, SCOPUS, PsychInfo, OVID PubMed and ProQuest Dissertation, and Thesis Global electronic databases was conducted using keywords to identify relevant studies. Articles will be limited to the English language. Endnote 20 software will be used to eliminate duplicates, and results will be exported into Abstrackr for the review screening process consisting of two stages: title and abstract reviews and full-text reviews. Selection process of eligible studies will follow the recommendations in the Preferred Reporting Items of Systematic Reviews and Meta-Analyses Extension for Scoping Reviews checklist. A data chart will be used to capture relevant information from all included studies, and results will be presented in tabular form and in a narrative report.

ETHICS AND DISSEMINATION

This scoping review consists of reviewing and collecting data from publicly available materials and hence does not require ethics approval. The scoping review results will be disseminated via publications in peer-reviewed journals and conference presentations. The results will also guide the design of a mixed method research study to examine the extent of trauma symptomatology and potentially traumatising experiences, and how they relate to the mental health of caregivers of adults with intellectual and developmental disability from different cultural backgrounds.

Supported Web-Based Acceptance and Commitment Therapy for Older Family Caregivers (CareACT) Compared to Usual Care

OBJECTIVES

The objective of the present study was to investigate whether an acceptance and commitment therapy (ACT)-based web-intervention (Group 1, CareACT), or a standardized rehabilitation in a rehabilitation center (Group 2) was effective in enhancing the psychological well-being of family caregivers aged 60 and over compared to support provided by voluntary caregiver associations (Group 3).

METHODS

Altogether, 149 family caregivers participated in this quasi-experimental study. Primary outcome measure was depression. Secondary outcomes included anxiety, sense of coherence, quality of life, psychological flexibility, experiential avoidance, and thought suppression. The questionnaires were administered at baseline, and four, and 10 months post-measurement. We investigated differences in the changes between the groups using Mplus modeling techniques.

RESULTS

Regarding the main outcome of depression, the results suggest that the CareACT intervention was superior to standardized rehabilitation and to the support given by caregiver associations at four months, both showing a medium-sized difference between the groups. However, the change from four to 10 months post-intervention was not significantly different between these groups (d = 0.32-0.36). Thought suppression showed a significantly different change between the three groups from baseline to four months and to 10 months post-measurement (p = .038).

CONCLUSIONS

Web-based ACT may have beneficial effects on depressive symptoms and thought suppression in older caregivers.

CLINICAL IMPLICATIONS

Web-based ACT could be a feasible alternative to institutional rehabilitation and support provided by voluntary caregiver associations. Web-based ACT responds flexibly to the needs of caregivers and provides them an opportunity for learning new skills to promote well-being.

Examining the impact of pulmonary hypertension on nonprofessional caregivers: A mixed‐methods systematic review

Pulmonary hypertension (PH) is a heterogeneous condition, associated with a high symptom burden and high rates of disability. While nonprofessional caregivers are essential in helping patients live better, little is known about the impact on caregivers and support that is currently available. This review has synthesised evidence examining experiences of caregivers of adults with PH. Web of Science, PubMed, PsycINFO, and Cochrane Library were searched for all types of study design. Articles were evaluated and analysed using a Joanna Briggs Institute approach. Eight articles primarily focussed on pulmonary arterial hypertension and chronic thromboembolic PH were identified investigating 456 caregivers from at least 10 countries. Four categories were identified describing caregiver demographics, responsibilities, impact, and support. Four integrated themes emerged identifying possible unmet needs and therapeutic targets: (1) Change, reflecting the various demands caring had on people as they attempted to balance the needs of the patient and their own; (2) Preparedness, discussing how caregivers could feel uncertain and unskilled for their duties and unsupported; (3) Isolation, with caregivers often encountering challenges to gaining information on PH turning to PH organisations and others affected for support and connection; and (4) Physical and mental demands, reflecting the multifaceted impact of caring. Findings add to the evidence demonstrating that PH can have a considerable impact on patients' support network. Providing support for caregivers of people with PH is an unmet need and may have a positive impact on patients and is an area that requires further research.

Caregiver Burden and Dementia: A Systematic Review of Self-Report Instruments

Background: As the demand for dementia care grows rapidly worldwide, heavy “caregiver burden” has been associated with stress and depression. Even so, standard metrics for interdisciplinary research of caregiver burden are limited. Objective: The objective of the present review is to recommend valid, reliable, and comprehensive self-report instruments of caregiver burden. Methods: A systematic review was performed using four databases, searched in April 2021. Articles that established or evaluated self-report instruments for dementia caregiver burden were included, while studies that involved non-dementia caregivers or did not clearly define caregiver burden were excluded. Established guidelines for reliability and agreement studies were used to assess quality and risk of bias. Assessments of self-report instruments were made based on reliability, validity, feasibility, and quality of psychometric evaluations, and comparative evaluations were presented in visual form using radar graphs. Results: Search terms yielded 1,720 articles, and 40 were included in the systematic review after excluding those of low quality. Based on the results of these studies, we recommend the Zarit Burden Interview, Screen for Caregiver Burden, Caregiver Burden Interview, and Burden Scale for Family Caregivers, due to their validity, reliability, and inclusion of multiple subjective and objective dimensions of burden. Conclusion: Targeting specific sources of caregiver burden can help prevent negative outcomes for both dementia patients and caregivers. Future studies should apply self-report instruments to measure and address caregiver burden longitudinally.

Improving End-of-Life Care for People with Dementia in LTC Homes During the COVID-19 Pandemic and Beyond

COVID-19 pandemic has resulted in a significant increase in deaths in long-term care homes (LTCH). People with dementia living in LTCHs represent one of the most frail and marginalized populations in Canada. The surge of COVID-19 cases in LTCHs and rationing of health-care resources during the pandemic have amplified the pre-existing need for improvements in palliative and end-of-life care in LTCHs. This position statement, created by a task force commissioned by the Alzheimer Society of Canada, provides recommendations for a multipronged coordinated approach to improving palliative and end-of-life care of people with dementia living in LTCHs during the COVID-19 pandemic and beyond.

Bilingual problem-solving training for caregivers of adults with dementia: A randomized, factorial-design protocol for the CaDeS trial

OBJECTIVE

Caregivers of individuals with Alzheimer's disease and related dementias (ADRD) often experience debilitating caregiver burden and emotional distress. To address these negative emotional consequences of caregiving, we will test and refine a strategy training intervention - Problem-Solving Training (PST) - that promotes self-efficacy and reduces caregiver burden and depressive symptoms. Previous research supports efficacy of PST; however, we do not know exactly how many PST sessions are needed or if post-training "boosters" are required to maintain PST benefits. Additionally, we translated and culturally-adapted PST into "Descubriendo Soluciones Juntos" (DSJ), our novel intervention for Spanish-speaking caregivers.

METHOD

In this 2 × 2 factorial design randomized controlled trial, we will test remotely-delivered PST/DSJ sessions for both English- and Spanish-speaking caregivers of persons with ADRD to determine the optimal number of PST/DSJ sessions and ongoing "booster" sessions needed to best help caregivers navigate their current and future needs.

AIMS

1) Compare the efficacy of three vs. six PST/DSJ sessions each with and without booster sessions for decreasing caregiver burden and depression and enhancing caregiver problem-solving; 2) Identify key factors associated with efficacy of PST/DSJ, including age, gender, primary language, relationship to care recipient, and uptake of the PST/DSJ strategy.

RESULTS

These results will establish guidelines needed for an evidence-based, culturally-adapted, and implementable problem-solving intervention to reduce caregiver stress and burden and improve caregiver health and well-being.

CONCLUSION

This work promotes inclusion of diverse and underserved populations and advances therapeutic behavioral interventions that improve the lives of caregivers of individuals with chronic conditions.

Adjunctive Therapy to Manage Neuropsychiatric Symptoms in Moderate and Severe Dementia: Randomized Clinical Trial Using an Outpatient Version of Tailored Activity Program

BACKGROUND

Neuropsychiatric symptoms (NPS) such as aggression, apathy, agitation, and wandering may occur in up to 90%of dementia cases. International guidelines have suggested that non-pharmacological interventions are as effective as pharmacological treatments, however without the side effects and risks of medications. An occupational therapy method, called Tailored Activity Program (TAP), was developed with the objective to treat NPS in the elderly with dementia and has been shown to be effective.

OBJECTIVE

Evaluate the efficacy of the TAP method (outpatient version) in the treatment of NPS in individuals with dementia and in the burden reduction of their caregivers.

METHODS

This is a randomized, double-blind, controlled clinical trial for the treatment of NPS in dementia. Outcome measures consisted of assessing the NPS of individuals with dementia, through the Neuropsychiatric Inventory-Clinician rating scale (NPI-C), and assessing the burden on their caregivers, using the Zarit Scale. All the participants were evaluated pre-and post-intervention.

RESULTS

54 individuals with dementia and caregivers were allocated to the experimental (n = 28) and control (n = 26) groups. There was improvement of the following NPS in the experimental group: delusions, agitation, aggressiveness, depression, anxiety, euphoria, apathy, disinhibition, irritability, motor disturbance, and aberrant vocalization. No improvement was observed in hallucinations, sleep disturbances, and appetite disorders. The TAP method for outpatient settings was also clinically effective in reducing burden between caregivers of the experimental group.

CONCLUSION

The use of personalized prescribed activities, coupled with the caregiver training, may be a clinically effective approach to reduce NPS and caregiver burden of individuals with dementia.

Effect of instrumental support on distress among family caregivers: Findings from a nationally representative study

BACKGROUND AND OBJECTIVE

A priority focus on palliative and supportive care is helping the 43.5 million caregivers who care for individuals with serious illness. Lacking support may lead to caregiver distress and poorer care delivery to patients with serious illness. We examined the potential of instrumental support (assistance with material and task performance) to mitigate distress among caregivers.

METHOD

We analyzed data from the nationally representative Health Information National Trends Survey (HINTS V2, 2018). Informal/family caregivers were identified in HINTS V2 if they indicated they were caring for or making healthcare decisions for another adult with a health problem. We used the PROMIS® instrumental support four-item short-form T-scores and the Patient Health Questionnaire (PHQ-4) for distress. We examined multivariable linear regression models for associations between distress and instrumental support, adjusted for sampling weights, socio-demographics, and caregiving variables (care recipient health condition(s), years caregiving (≥2), relationship to care recipient, and caregiver burden). We examined interactions between burden and instrumental support on caregiver distress level.

RESULTS

Our analyses included 311 caregivers (64.8% female, 64.9% non-Hispanic White). The unweighted mean instrumental support T-score was 50.4 (SD = 10.6, range = 29.3-63.3); weighted mean was 51.2 (SE = 1.00). Lower instrumental support (p < 0.01), younger caregiver age (p < 0.04), higher caregiving duration (p = 0.008), and caregiver unemployment (p = 0.006) were significantly associated with higher caregiver distress. Mean instrumental support scores by distress levels were 52.3 (within normal limits), 49.4 (mild), 48.9 (moderate), and 39.7 (severe). The association between instrumental support and distress did not differ by caregiver burden level.

CONCLUSIONS

Poor instrumental support is associated with high distress among caregivers, suggesting the need for palliative and supportive care interventions to help caregivers leverage instrumental support.

Characteristics and relationship between hyperphagia, anxiety, behavioral challenges and caregiver burden in Prader-Willi syndrome

Objectives

Prader-Willi syndrome (PWS) is a rare genetic disorder characterized by maladaptive behaviors, amongst which hyperphagia is a life-long concern for individuals with PWS and their caregivers. The current study examined the contribution of hyperphagia and other factors to caregiver burden across lifespan, in 204 caregivers of individuals with PWS living in the US, using the Zarit Burden Interview (ZBI) and the hyperphagia questionnaire (HQ-CT).

Results

We found a strong relationship between ZBI and HQ-CT especially in individuals with PWS older than 4 y and showed that HQ-CT scores of individuals with PWS is positively correlated with ZBI scores of their caregivers. The weight status of individuals with PWS was not associated with HQ-CT and ZBI scores, except for obese individuals who had significantly higher HQ-CT scores when compared to normal weight PWS individuals. We looked at PWS symptoms and care-related issues that impacted individuals and caregivers the most. We found that care-related tasks had the biggest negative impact on caregivers of children aged 0–4 y, whereas anxiety, temper tantrums, and oppositional behaviors of older individuals with PWS had the biggest impact on their caregivers concomitant with their high caregiver burden. Finally, we assessed the variability of HQ-CT and ZBI over 6 months in a subgroup of 83 participants. Overall, neither measure differed between 6 months and baseline. Most individual’s absolute HQ-CT score changes were between 0–2 units, whereas absolute ZBI score changes were between 0–6 points. Changes in the caregiver’s or individual’s life had little or no effect on HQ-CT and ZBI scores.

Conclusions

This study demonstrates a relationship between hyperphagia and caregiver burden and sheds light on predominant symptoms in children and adolescents that likely underly PWS caregiver burden. The stability and relationship between HQ-CT and ZBI support ZBI as an additional outcome measure in PWS clinical trials.

Burden of Care and Perceived Psycho-Social Outcomes among Family Caregivers of Patients Living with Cancer

Objective:

Caring for patients living with cancer requires the support of family caregivers. Literature reports experiences of diverse burdens and health effects among caregivers. This study examined the burden, physical, psycho-social, and financial outcomes of caregiving among caregivers of patients living with cancer.

Methods:

This cross-sectional descriptive study was conducted in the University College Hospital, Ibadan, Nigeria, between January and March 2019. A convenient sample of 201 caregivers who were direct family relatives were selected to complete a validated Zarit Burden Interview (ZBI) Questionnaire (r = 0.994) and perceived outcomes of caregiving questionnaire. The burden scale score ranged from 0 to 20 (no burden) to 61–88 (severe burden). Other outcomes of caregiving were measured on a Likert scale 0–4 (where 2.00 is the threshold score of effect of caregiving experienced), to determine the strength of the effect of caregiving on each variable of interest. The factors that contributed to the health outcomes were also identified. The Statistical Package for the Social Sciences version 22.0 was used for data analysis.

Results:

The mean age was 37.68 ± 14.29 years and majority (60.4%) were female. The mean duration of caregiving was 2.34 ± 1.14. Caregivers (44.5%) reported a mild level of the burden while 4.4% reported severe burden. The mean burden score was 28.30 ± 15.78. Findings also indicate that caregiving affected the physical health (mean = 2.58 ≥ 2.00) and social well-being (mean = 2.42 ≥ 2.00) of the caregivers. The impact on psychological health was less than the threshold value (mean = 1.88 ≤ 2.00), suggesting less impact. Some factors associated with physical effects include poor eating (mean = 2.80) and lack of sleep (mean = 2.92). However, the psychological outcomes were associated with loss of hope (mean = 1.53) and feelings of frustration (mean = 1.65).

Conclusions:

Reported burden of care was mild; although negative health outcomes were noted. Health-care professionals can ameliorate such effects through a regular systemic assessment with standardized instruments, for early identification and intervention.

Perspectives on Components of an Online Training and Support Program for Dementia Family Caregivers in India: A Focus Group Study

OBJECTIVES

There is a considerable need for support interventions for caregivers of people with dementia in developing countries, such as India. The purpose of the study was to identify the components and understand the acceptability of an online training and support program for dementia caregivers in India.

METHODS

Three focus group discussions were carried out with dementia caregivers (2) and health professionals (1) to understand the requirements of an online training and support program from their perspective. The commonly recurring themes were identified and defined using thematic content analysis.

RESULTS

The expectations from an online training and support program were wide-ranging from information about identification and management of dementia to support caregiver well-being. Use of simple language, cultural relevance, and an interactive design were suggestions to facilitate the use of the support program. Lack of time, difficulty in accessing the internet, lack of awareness about the portal, difficulty in reaching the rural population were anticipated as challenges in using the program.

CONCLUSIONS

The study highlights the requisite components of a first of its kind online training and support program in India by integrating the experiences, motivations, challenges, and expectations of caregivers and professionals involved in dementia care.

CLINICAL IMPLICATIONS

The focus group discussions in the current study provide a road map for the development of an online caregiver training and support program underlying the perspectives of the stakeholders for the consolidation of an effective dementia care program for lower resourced settings.

The P2X7 Receptor: Central Hub of Brain Diseases

The P2X7 receptor is a cation channel activated by high concentrations of adenosine triphosphate (ATP). Upon long-term activation, it complexes with membrane proteins forming a wide pore that leads to cell death and increased release of ATP into the extracellular milieu. The P2X7 receptor is widely expressed in the CNS, such as frontal cortex, hippocampus, amygdala and striatum, regions involved in neurodegenerative diseases and psychiatric disorders. Despite P2X7 receptor functions in glial cells have been extensively studied, the existence and roles of this receptor in neurons are still controversially discussed. Regardless, P2X7 receptors mediate several processes observed in neuropsychiatric disorders and brain tumors, such as activation of neuroinflammatory response, stimulation of glutamate release and neuroplasticity impairment. Moreover, P2X7 receptor gene polymorphisms have been associated to depression, and isoforms of P2X7 receptors are implicated in neuropsychiatric diseases. In view of that, the P2X7 receptor has been proposed to be a potential target for therapeutic intervention in brain diseases. This review discusses the molecular mechanisms underlying P2X7 receptor-mediated signaling in neurodegenerative diseases, psychiatric disorders, and brain tumors. In addition, it highlights the recent advances in the development of P2X7 receptor antagonists that are able of penetrating the central nervous system.

Psychometric characteristics of the Iranian Caregiver Burden Inventory (CBI) in caregivers of elderly patients with Alzheimer

Background

It is essential to better understand the caregiving burden and its determinants to support caregivers. The aim of this study was to test the validity and reliability (internal consistency) of the caregiver burden inventory (CBI) in Iranian caregivers of elderly patients with Alzheimer.

Methods

A cross sectional study was conducted to translate and validate the CBI in Iran. The structural validity of the scale was evaluated by exploratory factor analysis. The concurrent validity was tested correlating the CBI scores with the Beck Anxiety Inventory (BAI) and the Beck Depression Inventory (BDI) scores. The internal consistency reliability was assessed using the Cronbach’s alpha coefficient.

Results

In total, we enrolled 315 caregivers of elderly patients with Alzheimer disease (79% women, mean age 56.5 ± 13.9). The structural validity of the CBI as assessed by exploratory factor analysis indicated three factors (emotional/psychological, time-dependence and physical burden) that jointly explained 45.21% of the total variance observed. The Pearson correlation coefficient for the relationship between the scores obtained on the Caregiver Burden Inventory and the BAI and the BDI were 0.69 and 0.49 respectively, confirming the concurrent validity. The Cronbach’s alpha for the CBI was 0.91 ranging from 0.78 to 0.92 for its subscales.

Conclusion

Used in clinical practice and research, the CBI was verified to be a proper multidimensional instrument for evaluating the burden in caregivers of elderly patients with Alzheimer disease.

Profiles of Met and Unmet Needs in People with Dementia According to Caregivers' Perspective: Results from a European Multicenter Study

OBJECTIVES

This exploratory study aimed at investigating profiles of care needs in people with mild to moderate dementia and examined variables associated with these profiles.

DESIGN

A longitudinal international cohort study.

SETTING AND PARTICIPANTS

The baseline data of 447 community-dwelling dyads of people with dementia and their caregivers from the Access to Timely Formal Care (Actifcare) Study were included for analysis.

METHODS

A latent class analysis was applied to identify profiles of needs, measured with the Camberwell Assessment of Need for the Elderly as rated by the caregiver. We examined sociodemographic (eg, relative stress scale) and clinical characteristics (eg, neuropsychiatric inventory) associated with these profiles.

RESULTS

Four distinct need profiles were identified through latent class analysis. These comprised a "no need" profile (41% of the sample), a "met psychological needs" profile (25%), a "met social needs" profile (19%), and an "unmet social needs" profile (15%). A larger impact of caregiving on the caregiver's life as indicated by a higher relative stress scale score was associated with the "unmet social needs" profile.

CONCLUSIONS AND IMPLICATIONS

In this large European sample, there was a subgroup of persons with dementia with high "unmet social needs" whose caregivers simultaneously perceived high stress in their caregiving tasks. Identification of these profiles may help provision of appropriate support for these people.

How non-drug interventions affect the quality of life of patients suffering from progressive cognitive decline and their main caregiver

Background: In the absence of cure for age-related neurodegenerative diseases, non-drug interventions (NDIs) represent useful options. Quality of life (QOL) is a multidimensional concept progressively affected by cognitive decline. How single or multiple NDIs impact QOL is unknown.

Results: We found no significant effect of multiple over single NDI on QOL. Socio-demographic variables influenced patients’ (age, gender, caregivers’ occupational status, management of patients’ financial affairs) and caregivers’ (gender, occupational status, patients’ severity of cognitive decline) QOL. When dyads interrupted interventions after 6 months, their QOL was lower and caregivers’ anxiety, depression and physical symptoms were higher at the end of the study.

Conclusions: While the type and number of interventions do not appear to be critical, the continuity of adapted interventions in the long-term might be important for maintaining QOL of patients and caregivers.

Methods: This is a multicenter (7 Swiss Memory Clinics), quasi-experimental, one-year follow-up study including 148 subjects (mild cognitive impairment or mild dementia patients and their caregivers). Primary outcome was the effect of multiple vs single NDIs on QOL. Secondary outcome included NDIs effect on patients’ cognitive impairment and functional autonomy, caregivers’ burden, severity of patients’ neuropsychiatric symptoms and dyads’ anxiety and depression.

Acceptability and use of a patient-held communication tool for people living with dementia: a longitudinal qualitative study

OBJECTIVES

To assess the acceptability and use of a low-cost patient-held communication tool.

DESIGN

Longitudinal qualitative interviews at three time points over 18 months and document content analysis.

SETTING

Primary and community services.

PARTICIPANTS

Twenty-eight dyads: People living with dementia in Northern Ireland and their informal carers.

INTERVENTIONS

A patient-held healthcare 'passport' for people living with dementia.

PRIMARY AND SECONDARY OUTCOMES

Acceptability and use of the passport-barriers and facilitators to successful engagement.

RESULTS

There was a qualified appreciation of the healthcare passport and a much more nuanced, individualistic or personalised approach to its desirability and use. How people perceive it and what they actually do with it are strongly determined by individual contexts, dementia stage and other health problems, social and family needs and capacities. We noted concerns about privacy and ambivalence about engaging with health professionals.

CONCLUSION

Such tools may be of use but there is a need for demanding, thoughtful and nuanced programme delivery for future implementation in dementia care. The incentivisation and commitment of general practitioners is crucial. Altering the asymmetrical relationship between professionals and patients requires more extensive attention.

Knowledge evaluation instruments for dementia caregiver education programs: A scoping review

With the increase in our older adult population, there is a need for dementia training for informal and formal dementia caregivers. The objective of this scoping study is to assess dementia knowledge instruments utilized in educational programs and interventions intended for formal and informal dementia caregivers. Scoping review methodology was used to search PubMed, PsycInfo, CINAHL and Web of Science with tailored database search terms. The search yielded 8101 results, with 35 studies meeting inclusion. Studies were conducted in eight countries, had varying study designs (randomized controlled trials [RCTs] = 9, non-RCTs = 6, one-group study design = 20) and utilized previously published (19) and author developed (16) instruments. Furthermore, the studies were internationally diverse, conducted in the United States (n = 18), Australia (n = 7), UK (n = 3), China (n = 2), Canada (n = 2), Taiwan (n = 1), Brazil (n = 1) and multi-country (n = 1). Only two studies focused on minority populations. While author-developed instruments may be more relevant and timesaving, studies should strive to validate instruments or use previously published instruments to help standardize findings across studies and understand better the effects of educational programs on caregiver knowledge. Geriatr Gerontol Int 2020; 20: 397-413.

Evaluating the feasibility and acceptability of the Namaste Care program in long-term care settings in Canada

BACKGROUND

Residents living and dying in long-term care (LTC) homes represent one of society's most frail and marginalized populations of older adults, particularly those residents with advanced dementia who are often excluded from activities that promote quality of life in their last months of life. The purpose of this study is to evaluate the feasibility, acceptability, and effects of Namaste Care: an innovative program to improve end-of-life care for people with advanced dementia.

METHODS

This study used a mixed-method survey design to evaluate the Namaste Care program in two LTC homes in Canada. Pain, quality of life, and medication costs were assessed for 31 residents before and 6 months after they participated in Namaste Care. The program consisted of two 2-h sessions per day for 5 days per week. Namaste Care staff provided high sensory care to residents in a calm, therapeutic environment in a small group setting. Feasibility was assessed in terms of recruitment rate, number of sessions attended, retention rate, and any adverse events. Acceptability was assessed using qualitative interviews with staff and family.

RESULTS

The feasibility of Namaste Care was acceptable with a participation rate of 89%. However, participants received only 72% of the sessions delivered and only 78% stayed in the program for at least 3 months due to mortality. After attending Namaste Care, participants' pain and quality of life improved and medication costs decreased. Family members and staff perceived the program to be beneficial, noting positive changes in residents. The majority of participants were very satisfied with the program, providing suggestions for ongoing engagement throughout the implementation process.

CONCLUSIONS

These study findings support the implementation of the Namaste Care program in Canadian LTC homes to improve the quality of life for residents. However, further testing is needed on a larger scale.

Factors associated with long-term impact on informal caregivers during Alzheimer's disease dementia progression: 36-month results from GERAS

OBJECTIVE

To identify, in caregivers of patients with Alzheimer's disease (AD) dementia, factors associated with subjective (personal, physical, emotional, and social) and objective (informal caregiver time and costs) caregiver burden.

DESIGN

Prospective longitudinal European observational study: post-hoc analysis.

SETTING

Clinic.

PARTICIPANTS

Community-dwelling patients in France and Germany aged ≥ 55 years (n = 969) with probable AD and their informal caregivers.

MEASUREMENTS

Mini-Mental State Examination (MMSE), Alzheimer's Disease Cooperative Study-Activities of Daily Living (ADCS-ADL), 12-item Neuropsychiatric Inventory (NPI-12), Zarit Burden Interview (ZBI), informal caregiver basic and instrumental ADL hours (Resource Utilization in Dementia instrument), and informal caregiver costs. Mixed-effect models of repeated measures (MMRM) were run, including baseline and time-dependent covariates (change from baseline [CFB] to 18 months in MMSE, ADCS-ADL, and NPI-12 scores) associated with CFB in ZBI score/informal caregiver time over 36 months (analyzed using linear regression models) and informal caregiver costs over 36 months (analyzed using generalized linear models).

RESULTS

Greater decline in patient function (ADCS-ADL) over 18 months was associated with increased subjective caregiver burden (ZBI), hours, and costs over 36 months. Increased behavioral problems (NPI-12) over 18 months also negatively impacted ZBI. Cognitive decline (MMSE) over 18 months did not affect change in caregiver burden.

CONCLUSIONS

Long-term informal caregiver burden was driven by worsening functional abilities and behavioral symptoms but not cognitive decline, over 18 months in community-dwelling patients with AD dementia. Identifying the drivers of caregiver burden could highlight areas in which interventions may benefit both caregivers and patients.

'Living Together With Dementia': preliminary results of a training programme for family caregivers

The aim of this article was to present the preliminary results of a training programme for family caregivers of people with dementia at an early to moderate stage living at home - 'Living Together With Dementia'. In this randomised controlled trial, 27 family caregivers who met the inclusion criteria were recruited from the neurology outpatient consultation clinic of a hospital in the north of Portugal and randomised into two groups (control and experimental) between October 2015 and March 2016. The programme 'Living Together With Dementia' was applied to the participants of the experimental group. The strategies used, overload, difficulties and satisfaction of the caregivers were assessed at three different stages (at the beginning and end of the intervention, as well as at follow-up). For the data analysis, quantitative parametric measures were applied. The Health Ethical Commission of the Hospital Centre approved the study, and its protocol and Helsinki Declaration ethical principles were considered throughout the process. In the final assessment, an improvement in the overload and difficulties was confirmed, as was an increase in the caregivers' satisfaction level and an improvement in coping/problem-solving strategies. In the follow-up stage, the results tended to revert towards those of the initial assessment. The programme 'Living Together With Dementia' appeared to be a major contribution enabling family caregivers of people with dementia, although there is a need to develop an efficacy study using a more substantial sample. The programme contributed to a reduction in the overload and difficulties borne by the family caregivers of people with dementia at an early to moderate stage living at home and to increased caregiver satisfaction.

Psychosocial Interventions for Family Carers of People With Dementia: A Systematic Review and Meta-Analysis

Objective:This study aimed to review and synthesize findings of the effectiveness of psychosocial interventions aimed at improving outcomes for family carers of people with dementia. Method: A systematic review and meta-analysis were conducted according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. We systematically searched the following databases: Cochrane, PubMed, Cumulative Index to Nursing and Allied Health Literature (CINAHL), PsycInfo, Excerpta Medica Database (EMBASE), and Applied Social Sciences Index and Abstracts (ASSIA). RevMan 5 software was used to conduct meta-analysis and subgroup analysis using a random-effects model. Results: The search yielded 22 high-quality intervention articles that were suitable for further meta-analysis. Meta-analysis revealed that psychosocial interventions have a small to moderate significant effect on carer burden (standardized mean difference [SMD] = −0.34, confidence interval [CI] = [−0.59, −0.09]), depression (SMD = −0.36, CI = [−0.60, −0.13]), and general health (SMD = 0.34, CI = [0.18, 0.51]). Discussion: Psychosocial interventions had a positive impact on carer outcomes; however, these results should be interpreted with caution, given the significant level of heterogeneity in study designs. Future research could examine contextual and implementation mechanisms underlying psychosocial interventions to develop effective support systems for family carers of people with dementia.

Effectiveness of a psychoeducational intervention for caregivers of People With Dementia with regard to burden, anxiety and depression: A systematic review

AIM

To assess the effectiveness of psychoeducational interventions with respect to burden, anxiety and depression in family caregivers of People With Dementia living at home.

BACKGROUND

In dementia, the family assumes the role of main caregiver, maintaining the patient in a good state of health. Nevertheless, burden, anxiety and depression may have negative repercussions in caregivers. Therefore, professional supports through psychoeducational programmes are recommended as interventions for improving caregivers' health.

DESIGN

A quantitative systematic review.

DATA SOURCES

Electronic searches were performed in CINAHL/AMED/CENTRAL/Web of Science/LILACS/PUBMED from January 2005-August 2018.

REVIEW METHODS

The review was conducted using the JADAD scale to assess bias risk and the quality of the randomized controlled trials (RCTs) and the CONSORT instrument to assess study quality report. The extracted data were reviewed by independent reviewer pairs. The review was reported using PRISMA.

RESULTS

A total of 18 RCTs met inclusion criteria. Seven were classified as Technology-based Interventions and 11 as Group-based Interventions.

CONCLUSION

Psychoeducational interventions for caregivers allow them to increase their knowledge of the illness, develop problem-solving skills and facilitate social support. Technology-based Interventions significantly affect burden while Group-based Interventions affect anxiety, depression, insomnia and burden and quality of life and self-efficacy.

IMPACT

Research findings can be used to classify caregivers in future interventions according to illness stage to obtain more precise results.

Understanding the needs of caregivers of persons with dementia: a scoping review

BACKGROUND

The number of people living with dementia (PWD) is increasing worldwide, corresponding with an increasing number of caregivers for PWD. This study aims to identify and describe the literature surrounding the needs of caregivers of PWD and the solutions identified to meet these needs.

METHOD

A literature search was performed in: PsycInfo, Medline, CINAHL, SCIELO and LILACS, January 2007-January 2018. Two independent reviewers evaluated 1,661 abstracts, and full-text screening was subsequently performed for 55 articles. The scoping review consisted of 31 studies, which were evaluated according to sociodemographic characteristics, methodological approach, and caregiver's experiences, realities, and needs. To help extract and organize reported caregiver needs, we used the C.A.R.E. Tool as a guiding framework.

RESULTS

Thirty-one studies were identified. The most common needs were related to personal health (58% emotional health; 32% physical health) and receiving help from others (55%). Solutions from the articles reviewed primarily concerned information gaps (55%) and the education/learning needs of caregivers (52%).

CONCLUSION

This review identified the needs of caregivers of PWD. Caregivers' personal health emerged as a key area of need, while provision of information was identified as a key area of support. Future studies should explore the changes that occur in needs over the caregiving trajectory and consider comparing caregivers' needs across different countries.

Caregiver Burden in Gastroparesis and GERD: Correlation with Disease Severity, Healthcare Utilization and Work Productivity

BACKGROUND

Caregiver burden can be significant in chronic gastrointestinal diseases. No studies have been performed to evaluate caregiver burden in gastroparesis or gastroesophageal reflux disease (GERD).

AIMS

(1) Assess the caregiver burden in gastroparesis and GERD patients and healthy volunteers (HVs); (2) correlate the caregiver burden of these patients to the severity of patients' symptoms, healthcare utilization, and work productivity of the patients and the caregivers.

METHODS

Patients with gastroparesis and GERD, seen between June 2018 and November 2018, completed Patient Assessment of Gastrointestinal Symptoms, Work Productivity and Activity Impairment (WPAI) and healthcare utilization questionnaires. The caregivers of these patients completed Zarit Burden Interview (ZBI) and WPAI questionnaire. HVs and their potential caregivers also completed these questionnaires.

RESULTS

Forty-seven patients (gastroparesis = 31, GERD = 17), 12 HVs, and their caregivers completed questionnaires. Caregivers of gastroparesis patients reported high burden on ZBI (27.7 ± 2.9), greater than the caregivers of GERD (14.9 ± 2.5) and HVs (5.5 ± 1.6, p < 0.01). Among all patients, the caregiver burden had a strong correlation with patients' Gastroparesis Cardinal Symptom Index (GCSI) total score (r_s = 0.63, p < 0.01) and moderate correlations with the number of patients' physician office visits (r_s = 0.46, p < 0.01) and the number of work hours missed by caregivers due to patients' symptoms (r_s = 0.36, p = 0.04). Using multivariable regression, both presence of gastroparesis and other comorbidities significantly predicted caregiver burden, F(2, 33) = 15.94, p < 0.0001, R² = 0.491.

CONCLUSIONS

Caregivers of gastroparesis patients have high caregiver burden that strongly correlates with patients' GCSI total score. Interventions to reduce symptom severity of Gp patients may reduce the caregiver burden.

Mood, lifestyle and cardiovascular risk factors among older caregivers of patients with Alzheimer's disease dementia: a case-control study

BACKGROUND

Caregivers may have a higher risk of cardiovascular diseases and have high rates of anxiety and depression.

AIMS

The objective of this study was to evaluate mood, lifestyle and the presence of cardiovascular risk factors in older women caregivers of patients with Alzheimer´s disease (AD) dementia compared to non-caregivers living in the neighborhood.

METHODS

Paired case-control (1:1). Volunteers responded to a questionnaire with information about physical and leisure activities, smoking, alcohol use, and daily hours of care. Blood pressure (BP) was measured on 5 days with the Home Blood Pressure Monitoring (HBPM) system, and mood was assessed with the Geriatric Depression Scale (GDS) and Mini International Neuropsychiatric Interview (MINI). Laboratory testing for cardiovascular risk factors was performed.

RESULTS

Sixty-two volunteers were evaluated. Total cholesterol levels were higher among caregivers, with an odds ratio (OR) of 3.57 (95% CI 1.2-11, p = 0.03). There was no difference in BP. A positive screening for depression was obtained for 58% of caregivers and for 16% of control subjects (OR = 6.62, 95% CI 1.9-22.6, p < 0.01). The MINI revealed that 38.7% of caregivers had an actual depressive episode as compared to 9.7% of controls (9.7%) (OR = 5.42, 95% CI 1.3-22.7, p = 0.02); 35.5% of caregivers and 6% of controls had a diagnosis of anxiety disorder (OR = 4.79, 95% CI 1.2-19.1, p = 0.03).

DISCUSSION

The cardiovascular risk markers and lifestyle were similar in caregivers and non-caregivers, but there was a higher prevalence of depression and anxiety among caregivers.

CONCLUSIONS

Older women caregivers of patients with AD have more mental health symptoms and disorders and need to be treated.

The effect of psychosocial support on caregivers' perceived criticism and emotional over-involvement of persons with dementia: an assessor-blinded randomized controlled trial

BACKGROUND

Many relatives of close family members suffering from dementia have taken on the caregiver role. While intervention studies have revealed promising results on caregiver burden, distress, and depression, there is a lack of knowledge about how caregivers' perceived relationship with their ill family member influences the burden of care. This study examined whether a psychosocial intervention influenced this perceived relationship from the caregivers' perspective. We also explored whether the caregivers' perception of the care receiver's attitude and behavior changed over time, and whether caregiver stress and mood differed following the intervention.

METHODS

The participating caregivers and care receivers were randomly assigned to a psychosocial intervention comprising education about dementia, counselling and group sessions, or to treatment as usual. The study investigated caregivers' experience of expressed emotion using the Felt Expressed Emotion Rating Scale (FEERS), a self-report questionnaire that captures caregivers' perception of criticism (CC) and emotional over-involvement (EOI) exhibited by the family members with dementia.

RESULTS

A total of 208 dyads were enrolled in the study. There were no significant differences between the intervention and control groups in the studied variables. Caregivers' perception of CC and EOI was low but fluctuated somewhat, whereas their mood and stress level were stable during the follow-up period.

CONCLUSIONS

According to the FEERS, the intervention did not influence caregivers' perception of CC and EOI, and there was no difference between the intervention and control groups regarding caregivers' perceived relationship. Despite the increased symptoms of dementia, caregivers' level of distress and mood remained stable, and they seemed to maintain a positive perception of the quality of their relationship with the care receiver.

TRIAL REGISTRATION

Clinical.Trials.gov Sept. 2009, NCT01287767.

Utilizing the Senior Companion Program as a platform for a culturally informed caregiver intervention: Results from a mixed methods pilot study

To address the need for accessible, affordable, and sustainable Alzheimer's disease and related dementia caregiver interventions with minority populations, we developed the Senior Companion Program Plus, a three-phase pilot study that used a mixed methods experimental design. The intent was to determine if participation in a lay provider, peer-led psychoeducational intervention designed for African American Alzheimer's disease and related dementia caregivers (N = 16) improved caregiver burden and/or stress, coping skills, and social support. Focus groups with Senior Companions informed the intervention design. Quantitative results indicated that caregivers experienced improvement in their overall level of social support and well-being in meeting basic needs. Qualitative findings suggested that caregivers experienced improvement in their knowledge about the disease, experienced increased coping with Alzheimer's disease and related dementia caregiving, and reported benefits of using a lay provider model. Overall, the data suggest that the Senior Companion Program Plus is a promising intervention for African American Alzheimer's disease and related dementia caregivers.

The Effects of the Digital Platform Support Monitoring and Reminder Technology for Mild Dementia (SMART4MD) for People With Mild Cognitive Impairment and Their Informal Carers: Protocol for a Pilot Randomized Controlled Trial

BACKGROUND

Many countries are witnessing a trend of growth in the number and proportion of older adults within the total population. In Europe, population aging has had and will continue to have major social and economic consequences. This is a fundamentally positive development where the added life span is of great benefit for both the individual and the society. Yet, the risk for the individual to contract noncommunicable diseases and disability increases with age. This may adversely affect the individual's ability to live his or her life in the way that is desired. Cognitive conditions constitute a group of chronic diseases that predominantly affects older people. Recent technology advancements can help support the day-to-day living activities at home for people with cognitive impairments.

OBJECTIVE

A digital platform (Support Monitoring and Reminder for Mild Dementia; SMART4MD) is created to improve or maintain the quality of life for people with mild cognitive impairment (PwMCI) and their carers. The platform will provide reminders, information, and memory support in everyday life, with the purpose of giving structure and lowering stress. In the trial, we will include participants with a diagnosed neurocognitive disorder as well as persons with an undiagnosed subjective memory problem and cognitive impairment, that is, 20 to 28 points on the Mini-Mental State Examination.

METHODS

A pragmatic, multicenter RCT is being conducted in Spain, Sweden, and Belgium. The targets for recruitment are 1200 dyads-split into an intervention group and a control group that are in usual care. Intervention group participants will be provided with a data-enabled computer tablet with the SMART4MD app. Its core functionalities, intended to be used daily at home, are based on reminders, cognitive supporting activities, and sharing health information.

RESULTS

Inclusion of participants started in December 2017, and recruitment is expected to end in February 2019. Furthermore, there will be 3 follow-up visits at 6, 12, and 18 months after the baseline visit.

CONCLUSIONS

This RCT is expected to offer benefits at several levels including in-depth knowledge of the possibilities of introducing a holistic multilayered information and communication technology solution for this group. SMART4MD has been developed in a process involving the structured participation of PwMCI, their informal carers, and clinicians. The adoption of SMART4MD faces the challenge of this age group's relative unfamiliarity with digital devices and services. However, this challenge can also be an opportunity for developing a digital device tailored to a group at risk of digital exclusion. This research responds to the wider call for the development of digital devices which are accessible and affordable to older people and this full scale RCT can hopefully serve as a model for further studies in this field.

TRIAL REGISTRATION

ClinicalTrials.gov NCT03325699; https://clinicaltrials.gov/ct2/show/NCT03325699.

INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID)

DERR1-10.2196/13711.

Social support and self-rated health among caregivers of people with dementia: The mediating role of caregiving burden

The purpose of this study was to examine the associations between three indicators of social support and self-rated health among caregivers of people with dementia, and whether caregiving burden mediated such associations. Data from the Resources for Enhancing Alzheimer's Caregiver Health II (REACH II; N = 637) was used and multivariate analyses were conducted to test the mediation effects of caregiving burden by PROCESS for v3.2.03. The results revealed that three indicators of social support (received support, social network, and negative interactions) were all significantly associated with self-rated health. Findings also showed that caregiving burden acted as a mediator mechanism through which the associations between social network and self-rated health, negative interactions and self-rated health occurred. Results suggest that there is a need for more comprehensive caregiving assessments as well as multicomponent interventions that include improving and expanding social networks for caregivers of people with dementia. Findings also highlight the importance of minimizing interpersonal conflicts with others and providing more multicomponent programs aimed at reducing caregiving burden.

Caregivers' education decreases depression symptoms and burden in caregivers of patients with dementia

OBJECTIVE

To determine whether providing education to caregivers of patients with dementia decreases their depression symptoms and burden.

METHODS

Eighty-three outpatients with dementia being treated at the Memory Clinic of Tokyo Medical University Hospital and their caregivers were enrolled. Forty-seven caregivers were enrolled in the caregivers' education (EDU) group and 36 were enrolled in the control (CTL) group. Caregivers were assessed for depression, burden, and quality of life (QoL). Patients were assessed for cognition, psychological symptoms, and QoL. Assessments were carried out at baseline and at 3 months (3M). Caregivers in the EDU group received lectures on symptoms and progression of dementia, management of symptoms, use of social resources etc. RESULTS: At 3M, prevalence of depression symptoms in the EDU group significantly decreased from 36% to 17%, whereas it significantly increased from 22% to 50% in the CTL group. Depression and burden were significantly improved at 3M in the EDU group, whereas they significantly worsened in the CTL group. Psychological symptoms showed a lower tendency at 3M for the EDU group. No significant changes in QoL of caregivers and patients were found in either group.

CONCLUSIONS

Providing education to caregivers of patients with dementia improves their depression symptoms and sense of burden, and tends to improve the behaviour and psychological symptoms of dementia in the patients. Providing education to caregivers of dementia patients may hence result in beneficial effects for both the patients and their caregivers, and should be widely used in dementia care.

Alzheimer Café: an approach focused on Alzheimer's patients but with remarkable values on the quality of life of their caregivers

BACKGROUND

Alzheimer's disease (AD) affects the global quality of life of persons who suffer from it and their caregivers, because of the behavioral and psychological consequences associated with the pathology and its caring. The Alzheimer Café (AC) is one example of approach aimed to help persons and caregivers deal with their disease.

AIM

This is a pilot study focusing on the efficacy of AC in relieving caregivers' and persons' burdens due to dementia.

METHODS

The quality of life of both caregivers and persons who attended the AC was compared with the quality of life of those who did not. Basic and instrumental daily activities and neuropsychiatric functioning were assessed. Caregivers also answered to general well-being and caregiving burden questionnaires. The evaluation took place at the beginning of the intervention and after 1, 3, 6, 9 and 12 months.

RESULTS

Caregivers who joined the AC with their persons with dementia showed to have significantly benefited in the daily care of persons with dementia, in terms of total well-being, vitality, and emotional burden.

DISCUSSION

Although improvements were not observed in persons with dementia who attended the AC, significant benefits were reported by their caregivers, suggesting that the intervention may produce better management of social and economic problems and lead to better emotional support.

CONCLUSIONS

The AC seems to help families of AD persons to better manage the disease, and also delay the institutionalization of these persons, which is certainly an ambitious goal for an incurable disorder such as Alzheimer's disease.

Eye Movement Desensitization and Reprocessing Integrative Group Treatment Protocol (EMDR-IGTP) Applied to Caregivers of Patients With Dementia

Caregivers of patients with dementia experience high levels of stress and burden, with effects comparable to those of a traumatic event. Eye Movement Desensitization and Reprocessing (EMDR) appear to be effective in recovering post-traumatic stress disorder (PTSD). We aimed at investigating the effectiveness of the Eye Movement Desensitization and Reprocessing Integrative Group Treatment Protocol (EMDR-IGTP) on the "caregiver syndrome". Forty-four primary caregivers entered the study. They were randomly assigned to either the "immediate" branch, who received the treatment soon after recruitment, or to the "delayed" branch, who received it two months after recruitment. The treatment consisted of eight group sessions (one per week) spanning over two months. Emotional distress was measured before the treatment, immediately after the end of it, and two months later (follow-up), by means of several clinical scales (Impact of Event Scale-Revised, IES-R; Caregiver Needs Assessment, CNA; Caregiver Burden Inventory, CBI; Anxiety and Depression Scale-Reduced Form, AD-R). The "immediate" branch improved significantly more than the "delayed" (control) branch on The Impact of Event Scale-Revised, the Anxiety, and the Depression scales; however, after treatment such an improvement was maintained only in the first scale. The "delayed" branch took less advantage of the treatment, showing significant reduction only on the Depression scale, an effect which disappeared at follow-up. These preliminary results show for the first time that EMDR-IGTP reduces stress-related symptoms, anxiety, and depression in caregivers of patients with dementia. Interestingly, caregivers who were inserted in a waiting list after recruitment showed smaller treatment effects. Larger samples are needed to better interpret such differential clinical profiles.

Mediational Model of Multiple Sclerosis Impairments, Family Needs, and Caregiver Mental Health in Guadalajara, Mexico

Individuals with multiple sclerosis (MS), especially those living in Latin America, often require assistance from family caregivers throughout the duration of the disease. Previous research suggests that family caregivers may experience positive and negative outcomes from providing care to individuals with MS, but few studies have examined the unmet needs of individuals providing care to family members with MS and how these unmet needs may mediate the relationship between MS symptoms and caregiver mental health. The current study examined the relationships among MS impairments (functional, neurological, cognitive, behavioral, and emotional), unmet family needs (household, informational, financial, social support, and health), and caregiver mental health (satisfaction with life, anxiety, burden, and depression) in a sample of 81 MS caregivers from Guadalajara, Mexico. A structural equation model demonstrated the mediational effect of unmet family needs on the relationship between MS impairments and caregiver mental health. These findings suggest that intervention research on MS caregivers in Latin America may consider focusing on caregiver mental health problems by addressing unmet family needs and teaching caregivers ways to manage the impairments of the individual with MS.

Relationship between Mastery and Caregiving Competence in Protecting against Burden, Anxiety and Depression among Caregivers of Frail Older Adults

OBJECTIVE

Studies suggest the protective effect of mastery and caregiving competence against psychological stressors of caregiving in the context of dementia, although the interplay between the two with caregiver outcomes is not well understood. This study examines the independent and moderating impact of mastery and caregiving competence on burden, anxiety and depression among caregivers of older adults with frailty-related care needs.

DESIGN, SETTING AND PARTICIPANTS

This is a cross-sectional study of 274 older adults-family caregiver dyads from a hospital in Singapore. Mean ages of the older adults and their caregivers were 85 and 59 years respectively.

MEASUREMENTS

We performed hierarchical linear regression models to examine the independent influence of mastery and caregiving competence on caregiver burden, anxiety and depression. We also examined the interaction effect between mastery and caregiving competence for each outcome.

RESULTS

Mastery and caregiving competence were independently negatively associated with caregiver burden, anxiety and depression. Mastery explained more variance than caregiving competence and had a stronger correlation with all outcomes. There was a statistically significant interaction between mastery and caregiving competence for depression (interaction term beta=.14, p<0.01), but not burden and anxiety. High levels of mastery are associated with less depression. particularly among caregivers with below-average levels of caregiving competence. Likewise, high levels of caregiving competence are associated with less depression. particularly among caregivers with below-average levels of mastery.

CONCLUSION

Our findings suggest potential benefits adressing targeted interventions for mastery and caregiving competence of caregivers to older adults as they independently influence caregiver outcomes and moderate each other's effect on depression. Mastery-based interventions should be incorporated into current caregiver training which traditionally has focused on caregiver competence alone.

Caregiver Burden in Adults With Inflammatory Bowel Disease

Inflammatory bowel disease (IBD) is a chronic condition that has a relapsing and remitting disease course. There is high degree of inpatient and outpatient health care utilization by IBD patients along with a great deal of psychosocial stress associated with the condition. Patients frequently rely on family, friends, and other informal caregivers to provide medical, instrumental, and emotional support. The role of caregiving for adult IBD patients can lead to significant caregiver burden. At present, there are limited data on the existence of caregiver burden in adult IBD patients. Moreover, there are no specific measures for evaluating caregiver burden and there are no interventions targeting caregiver burden in adults with IBD. This review outlines the limited available data on caregiver burden in IBD, explores caregiver burden in other chronic conditions, and proposes applications of these data for creating screening and assessment tools and interventions for caregiver burden in IBD.

Older New Zealanders in caregiving roles: Psychological functioning of caregivers of people living with dementia

Research suggests that caregiving can have both positive and negative effects on psychological functioning. It is, however, less understood how these positive and negative effects interact within individuals. The present study aimed to identify different patterns of psychological functioning and their correlates among caregivers of dementia patients. The sample included 336 older caregivers. Latent profile analysis revealed three distinct profiles. The optimally functioning profile was characterized by high levels of positive outcomes and low levels of depression. Those with a suboptimally functioning profile reported low levels of positive outcomes and increased depression symptoms. The poorly functioning profile displayed extremely high levels of depression symptoms and extremely low levels of positive outcomes. Differentiation among groups was driven by differences in social support and to a lesser extent by socio-demographic factors and caregiving experience. Results suggest that caregiving is not necessarily a burdensome role and highlight the role of social relationships.

Olfactory testing in consecutive patients referred with suspected dementia

BACKGROUND

Alzheimer's disease (AD) is the most common cause of dementia and early and accurate diagnosis is important. Olfactory dysfunction is an early sign of AD. The contribution by test of olfactory function has been surveyed in AD vs a line of conditions but remains to be settled in the workup of unselected patients referred with suspected dementia.

METHODS

We performed a two-step investigation: first, a comparative study of healthy controls and probable AD patients to test the applicability of the chosen scents (cuisine study); second, a study of consecutive patients referred to our geriatric outpatient clinic for suspected dementia with the investigating personnel blinded to the results of the Olfactory Test (blinded study).

RESULTS

The sum of scents detected discriminated patients with probable AD from controls in the cuisine study (n = 40; p < 0.001; area under ROC curve 0.94). In the blinded study (n = 50) the diagnosis was probable AD in 48%, minimal cognitive impairment in 24%, vascular dementia in 8%, alcohol induced impairment in 12%, depression in 4%, and Parkinson's disease and Lewy body dementia in 2%. Area under the ROC-curve was 0.67. The odds ratio for probable AD with 2+ smell errors was 12 (95%-CI: 1.3-101; p = 0.026 (reference 0-1 smell errors)) age adjusted. None in the AD group had zero smell errors (Negative Predictive Value 100%).

CONCLUSION

Olfactory testing may support to dismiss the diagnosis of probable AD in the workup of a mixed group of patients referred with cognitive impairment. Still, it had a low sensitivity for probable AD.

Problem-solving in caregiver-counselling (PLiP Study): study protocol of a cluster randomized pragmatic trial

BACKGROUND

Despite the positive evaluation of various caregiver interventions over the past 3 decades, only very few intervention protocols have been translated to delivery in service contexts. The purpose of this study is to train care counsellors of statutory long term care insurances in problem-solving and to evaluate this approach as an additional component in the statutory care counselling in Germany.

METHODS

A pragmatic cluster randomized controlled trial in which 38 sites with 58 care counsellors are randomly assigned to provide either routine counselling plus additional problem-solving for caregivers or routine counselling alone. The counsellor training comprises an initial 2-day training, a follow-up day after 4 months, and biweekly supervision contacts with a psychotherapist for 6 months over the phone. The agreed minimum counselling intensity is one initial face-to-face contact including a caregiver assessment and at least one telephone follow-up contact. Caregivers who are positively screened for significant strain in their role are followed up at 3 and 6 months after baseline assessment. Main outcome are caregivers' depressive symptoms.

DISCUSSION

While it is unclear if the expected very low amount of additional counselling time is sufficient to yield any additional effects on caregiver depression, it is also unclear if the additional problem-solving component yields to synergies with routine counselling that is based on information and case management. There are different potential individual and organisational barriers to a consistent intervention delivery like gratification for participation, time for extra work or internal motivation to participate.

TRIAL REGISTRATION

( ISRCTN23635523 ).

Updated meta-review of evidence on support for carers

Background

Policy and research interest in carers continues to grow. A previous meta-review, published in 2010, by Parkeret al.(Parker G, Arksey H, Harden M.Meta-review of International Evidence on Interventions to Support Carers. York: Social Policy Research Unit, University of York; 2010) found little compelling evidence of effectiveness about specific interventions and costs.

Objective

To update what is known about effective interventions to support carers of ill, disabled or older adults.

Design

Rapid meta-review.

Setting

Any relevant to the UK health and social care system.

Participants

Carers (who provide support on an unpaid basis) of adults who are ill, disabled or older.

Interventions

Any intervention primarily aimed at carers.

Main outcome measures

Any direct outcome for carers.

Data sources

Database searches (including Cochrane Database of Systematic Reviews, Database of Abstracts of Reviews of Effects, MEDLINE, Applied Social Sciences Index and Abstracts and Social Care Online) for systematic reviews published from January 2009 to 2016.

Review methods

We used EndNote X7.4 (Thomson Reuters, CA, USA) to screen titles and abstracts. Final decisions on the inclusion of papers were made by two reviewers independently, using a Microsoft Excel®2013 spreadsheet (Microsoft Corporation, Redmond, WA, USA). We carried out a narrative synthesis structured by patient condition and by seven outcomes of interest. We assessed the quality of the included systematic reviews using established criteria. We invited a user group of carers to give their views on the overall findings of our review.

Results

Sixty-one systematic reviews were included (27 of high quality, 25 of medium quality and nine of low quality). Patterns in the literature were similar to those in earlier work. The quality of reviews had improved, but primary studies remained limited in quality and quantity. Of the high-quality reviews, 14 focused on carers of people with dementia, four focused on carers of those with cancer, four focused on carers of people with stroke, three focused on carers of those at the end of life with various conditions and two focused on carers of people with mental health problems. Multicomponent interventions featured prominently, emphasising psychosocial or psychoeducational content, education and training. Multiple outcomes were explored, primarily in mental health, burden and stress, and well-being or quality of life. Negative effects following respite care were unsupported by our user group. As with earlier work, we found little evidence on intervention cost-effectiveness. No differences in review topics were found across high-, medium- and low-quality reviews.

Limitations

The nature of meta-reviews precludes definitive conclusions about intervention effectiveness, for whom and why. Many of the included reviews were small in size and authors generally relied on small numbers of studies to underpin their conclusions. The meta-review was restricted to English-language publications. Short timescales prevented any investigation of the overlap of primary studies, and growth in the evidence base since the original meta-review meant that post-protocol decisions were necessary.

Conclusions

There is no ‘one size fits all’ intervention to support carers. Potential exists for effective support in specific groups of carers. This includes shared learning, cognitive reframing, meditation and computer-delivered psychosocial support for carers of people with dementia, and psychosocial interventions, art therapy and counselling for carers of people with cancer. Counselling may also help carers of people with stroke. The effectiveness of respite care remains a paradox, given the apparent conflict between the empirical evidence and the views of carers.

Future work

More good-quality, theory-based, primary research is warranted. Evidence is needed on the differential impact of interventions for various types of carers (including young carers and carers from minority groups), and on the effectiveness of constituent parts in multicomponent programmes. Further research triangulating qualitative and quantitative evidence on respite care is urgently required. The overlap of primary studies was not formally investigated in our review, and this warrants future evaluation.

Study registration

This study is registered as PROSPERO CRD42016033367.

Funding

The National Institute for Health Research Health Services and Delivery Research programme.

Psychometric characteristics of the caregiver burden inventory in caregivers of adults with heart failure

BACKGROUND

A better understanding of caregiver burden and its determinants is essential to support caregivers. Many instruments have been developed to measure caregiver burden in various illness contexts, but few have been psychometrically tested for caregivers of heart failure patients.

AIMS

The aim of this study was to test the validity (factorial and concurrent validity) and reliability (internal consistency) of the caregiver burden inventory (CBI) in a cohort of caregivers of heart failure patients.

METHODS

This was a secondary analysis from a cross-sectional study on heart failure patients and their caregivers enrolled from various Italian outpatient centres. The factorial validity of the CBI was tested with confirmatory factor analysis, and concurrent validity was tested correlating CBI scores with the short form-12 health survey scores. The internal consistency reliability was assessed with Cronbach's alpha.

RESULTS

In total, 505 caregivers of heart failure patients (52.2% women, mean age 56.59±14.9 years) were enrolled. Confirmatory factor analyses confirmed the original five-factor model: time-dependence, developmental, physical, social and emotional burden. This model fits the data better than the single-factor model, and the dimensions showed high internal consistency reliability (Cronbach's alpha 0.91 for time-dependence burden, 0.92 for developmental burden, 0.88 for physical burden, 0.89 for social burden and 0.93 for emotional burden; 0.96 for the total score of burden).

CONCLUSION

The CBI proved to be a good multidimensional instrument for evaluating the burden in caregivers of heart failure patients and can be used in clinical practice and research. This tool can be considered to tailor interventions aimed at improving caregiver outcomes.

The TECH@HOME study, a technological intervention to reduce caregiver burden for informal caregivers of people with dementia: study protocol for a randomized controlled trial

Background

It is estimated that global dementia rates will more than triple by 2050 and result in a staggering economic burden on families and societies. Dementia carries significant physical, psychological and social challenges for individuals and caregivers. Informal caregiving is common and increasing as more people with dementia are being cared for at home instead of in nursing homes. Caregiver burden is associated with lower perceived health, lower social coherence, and increased risk of morbidity and mortality. The aim of this trial is to evaluate the effects of information and communication technology (ICT) on caregiver burden among informal caregivers of people with dementia by reducing the need for supervision.

Methods/design

This randomized controlled trial aims to recruit 320 dyads composed of people with dementia living in community settings and their primary informal caregivers. In the intervention group, people with dementia will have a home monitoring kit installed in their home while dyads in the control group will receive usual care. The ICT kit includes home-leaving sensors, smoke and water leak sensors, bed sensors, and automatic lights that monitor the individual’s behavior. Alerts (text message and/or phone call) will be sent to the caregiver if anything unusual occurs. All study dyads will receive three home visits by project administrators who have received project-specific training in order to harmonize data collection. Home visits will take place at enrollment and 3 and 12 months following installation of the ICT kit. At every home visit, a standardized questionnaire will be administered to all dyads to assess their health, quality of life and resource utilization. The primary outcome of this trial is the amount of informal care support provided by primary informal caregivers to people with dementia.

Discussion

This is the first randomized controlled trial exploring the implementation of ICT for people with dementia in a large sample in Sweden and one of the first at the international level. Results hold the potential to inform regional and national policy-makers in Sweden and beyond about the cost-effectiveness of ICT and its impact on caregiver burden.

Trial Registration

ClinicalTrials.gov, NCT02733939. Registered on 10 March 2016.

Electronic supplementary material

The online version of this article (doi:10.1186/s13063-017-1796-8) contains supplementary material, which is available to authorized users.