Quality of life in dementia: a study on proxy bias

Virtual Reality-Based Psychoeducation for Dementia Caregivers: The Link between Caregivers' Characteristics and Their Sense of Presence

In neuropsychology and clinical psychology, the efficacy of virtual reality (VR) experiences for knowledge acquisition and the potential for modifying conduct are well documented. Consequently, the scope of VR experiences for educational purposes has expanded in the health field in recent years. In this study, we sought to assess the effectiveness of ViveDe in a psychoeducational caregiver program. ViveDe is a VR application that presents users with possible daily life situations from the perspective of individuals with dementia. These situations can be experienced in immersive mode through 360° video. This research aimed to ascertain the associations between the sense of presence that can be achieved in VR and some users' psychological characteristics, such as distress and empathetic disposition. The study involved 36 informal caregivers of individuals with Alzheimer's disease. These participants were assessed using scales of anxiety and depression, perceived stress, empathy, and emotional regulation. They were asked to participate in a six-session psychoeducation program conducted online on dementia topics, in addition to experiencing the ViveDe application. The immersive VR sessions enabled the caregivers to directly experience the symptoms of dementia (e.g., spatial disorientation, agnosia, difficulty in problem-solving, and anomia) in everyday and social settings. The results indicated that although the experience in ViveDe (evaluated using the XRPS scale and five questions about emotional attunement) showed efficacy in producing a sense of first-person participation in the symptoms of dementia, further research is needed to confirm this. The structural equation model provided evidence that the characteristics of individuals who enjoy the VR experience play a determining role in the perceived sense of presence, which in turn affects the efficacy of the VR experience as a psychoeducational tool. Further research will be conducted to ascertain the potential role of these elements in conveying change in the caregivers of people with dementia. This will help us study the long-term effectiveness of a large-scale psychoeducation program in VR.

Understanding the influence of different proxy perspectives in explaining the difference between self-rated and proxy-rated quality of life in people living with dementia: a systematic literature review and meta-analysis

PURPOSE

Proxy assessment can be elicited via the proxy-patient perspective (i.e., asking proxies to assess the patient's quality of life (QoL) as they think the patient would respond) or proxy-proxy perspective (i.e., asking proxies to provide their own perspective on the patient's QoL). This review aimed to identify the role of the proxy perspective in explaining the differences between self-rated and proxy-rated QoL in people living with dementia.

METHODS

A systematic literate review was conducted by sourcing articles from a previously published review, supplemented by an update of the review in four bibliographic databases. Peer-reviewed studies that reported both self-reported and proxy-reported mean QoL estimates using the same standardized QoL instrument, published in English, and focused on the QoL of people with dementia were included. A meta-analysis was conducted to synthesize the mean differences between self- and proxy-report across different proxy perspectives.

RESULTS

The review included 96 articles from which 635 observations were extracted. Most observations extracted used the proxy-proxy perspective (79%) compared with the proxy-patient perspective (10%); with 11% of the studies not stating the perspective. The QOL-AD was the most commonly used measure, followed by the EQ-5D and DEMQOL. The standardized mean difference (SMD) between the self- and proxy-report was lower for the proxy-patient perspective (SMD: 0.250; 95% CI 0.116; 0.384) compared to the proxy-proxy perspective (SMD: 0.532; 95% CI 0.456; 0.609).

CONCLUSION

Different proxy perspectives affect the ratings of QoL, whereby adopting a proxy-proxy QoL perspective has a higher inter-rater gap in comparison with the proxy-patient perspective.

"It's a Postcode Lottery": How Do People Affected by Dementia in Wales Experience Their Diagnosis and Post-Diagnostic Support, and How May These Be Improved?

National dementia strategies are government policies that guide the provision of appropriate support for people living with dementia. These strategies, developed through extensive stakeholder engagement, should be tailored to the cultural and demographic needs of a country. Using a mixed methods survey design, this study explored the aims of the Dementia Action Plan (2018-2022) for Wales (UK) around assessment, diagnosis, and post-diagnostic support, and assessed whether these are being realized. Further, it sought to gain insight from people living with dementia and their carers around how the experience may be improved for others in the future, as the development of the next iteration of the Action Plan is anticipated. Respondents included 71 people, affected by typical and rarer types of dementia, living in both rural and urban areas. Findings suggest both positive and negative experiences, reflecting a 'postcode lottery' of service provision. Attainable recommendations for improvement were made by respondents, which would ultimately likely be cost-effective and reduce strain on formal services. The findings reported in this paper concur with those reported by people living with dementia in other countries, indicating their relevance for policymakers beyond Wales.

How do quantitative studies involving people with dementia report experiences of standardised data collection? A narrative synthesis of NIHR published studies

BACKGROUND

People with dementia are routinely included as research participants in trials and other quantitative studies in which they are invited to respond to standardised measures. This paper reviews the reporting of standardised data collection from people with dementia in reports published in the National Institute for Health and Care Research (NIHR) Journals Library. The aim was to understand how the administration of standardised, self-report measures with people with dementia is reported in NIHR monographs and what could be learnt from this about the feasibility and acceptability of data collection approaches for future studies.

METHODS

This was a systematic review with narrative synthesis. Broad search terms (Dementia OR Alzheimer*) were used to search the NIHR Journals Library website in December 2021. All studies that used (or intended to use) standardised measures to collect research data directly from people with dementia were eligible for inclusion. Information was extracted (where reported) on the process of data collection, dementia severity, levels of missing data and the experiences and reflections of those involved.

RESULTS

Searches returned 42 records, from which 17 reports were assessed as eligible for inclusion, containing 22 studies. Response rates from participants with dementia in these studies varied considerably and appeared to be related to dementia severity and place of residence. Little information was reported on the process of data collection or the reasons for missing data, and most studies did not report the experiences of participants or those administering the measures. However, there was an indication from two studies that standardised data collection could provoke emotional distress in some participants with dementia.

CONCLUSIONS

Through this review we identified both variation in levels of missing data and gaps in reporting which make it difficult to ascertain the reasons for this variation. We also identified potential risks to the well-being of participants with dementia which may be associated with the content of standardised measures and the context of data collection. Open reporting of and reflection upon data collection processes and the experiences of people involved is essential to ensure both the success of future data collection and the wellbeing of study participants.

TRIAL REGISTRATION

Registered with Research on Research https://ror-hub.org/study/2905/ .

Does Differential Item Functioning Jeopardize the Comparability of Health-Related Quality of Life Assessment Between Patients and Proxies in Patients with Moderate-to-Severe Traumatic Brain Injury?

BACKGROUND

Health-related quality of life (HRQoL) is clearly recognized as a patient-important outcome in patients with traumatic brain injury (TBI). Patient-reported outcomes are therefore often used and supposed to be directly reported by the patients without interpretation of their responses by a physician or anyone else. However, patients with TBI are often unable to self-report because of physical and/or cognitive impairments. Thus, proxy-reported measures, e.g., family members, are often used on the patient's behalf. Yet, many studies have reported that proxy and patient ratings differ and are noncomparable. However, most studies usually do not account for other potential confounding factors that may be associated with HRQoL. In addition, patients and proxies can interpret some items of the patient-reported outcomes differently. As a result, item responses may not only reflect patients' HRQoL but also the respondent's (patient or proxy) own perception of the items. This phenomenon, called differential item functioning (DIF), can lead to substantial differences between patient-reported and proxy-reported measures and compromise their comparability, leading to highly biased HRQoL estimates. Using data from the prospective multicenter continuous hyperosmolar therapy in traumatic brain-injured patients study (240 patients with HRQoL measured with the Short Form-36 (SF-36)), we assessed the comparability of patients' and proxies' reports by evaluating the extent to which items perception differs (i.e., DIF) between patients and proxies after controlling for potential confounders.

METHODS

Items at risk of DIF adjusting for confounders were examined on the items of the role physical and role emotional domains of the SF-36.

RESULTS

Differential item functioning was evidenced in three out of the four items of the role physical domain measuring role limitations due to physical health problems and in one out of the three items of the role emotional domain measuring role limitations due to personal or emotional problems. Overall, despite an expected similar level of role limitations between patients who were able to respond and those for whom proxies responded, proxies tend to give more pessimistic responses than patients in the case of major role limitations and more optimistic responses than patients in the case of minor limitations.

CONCLUSIONS

Patients with moderate-to-severe TBI and proxies seem to have different perceptions of the items measuring role limitations due to physical or emotional problems, questioning the comparability of patient and proxy data. Therefore, aggregating proxy and patient responses may bias HRQoL estimates and alter medical decision-making based on these patient-important outcomes.

Personally tailored activities for improving psychosocial outcomes for people with dementia in long-term care

BACKGROUND

People with dementia who are being cared for in long-term care settings are often not engaged in meaningful activities. We wanted to know whether offering them activities which are tailored to their individual interests and preferences could improve their quality of life and reduce agitation. This review updates our earlier review published in 2018.

OBJECTIVES

∙ To assess the effects of personally tailored activities on psychosocial outcomes for people with dementia living in long-term care facilities. ∙ To describe the components of the interventions. ∙ To describe conditions which enhance the effectiveness of personally tailored activities in this setting.

SEARCH METHODS

We searched the Cochrane Dementia and Cognitive Improvement Group's Specialized Register, on 15 June 2022. We also performed additional searches in MEDLINE, Embase, PsycINFO, CINAHL, Web of Science, ClinicalTrials.gov, and the World Health Organization (WHO) ICTRP, to ensure that the search for the review was as up-to-date and as comprehensive as possible.

SELECTION CRITERIA

We included randomised controlled trials (RCTs) and controlled clinical trials offering personally tailored activities. All interventions included an assessment of the participants' present or past preferences for, or interest in, particular activities as a basis for an individual activity plan. Control groups received either usual care or an active control intervention.

DATA COLLECTION AND ANALYSIS

Two authors independently selected studies for inclusion, extracted data and assessed the risk of bias of included studies. Our primary efficacy outcomes were agitation and participant quality of life. Where possible, we pooled data across studies using a random effects model.

MAIN RESULTS

We identified three new studies, and therefore included 11 studies with 1071 participants in this review update. The mean age of participants was 78 to 88 years and most had moderate or severe dementia. Ten studies were RCTs (three studies randomised clusters to the study groups, six studies randomised individual participants, and one study randomised matched pairs of participants) and one study was a non-randomised clinical trial. Five studies included a control group receiving usual care, five studies an active control group (activities which were not personally tailored) and one study included both types of control group. The duration of follow-up ranged from 10 days to nine months. In nine studies personally tailored activities were delivered directly to the participants. In one study nursing staff, and in another study family members, were trained to deliver the activities. The selection of activities was based on different theoretical models, but the activities delivered did not vary substantially. We judged the risk of selection bias to be high in five studies, the risk of performance bias to be high in five studies and the risk of detection bias to be high in four studies. We found low-certainty evidence that personally tailored activities may slightly reduce agitation (standardised mean difference -0.26, 95% CI -0.53 to 0.01; I² = 50%; 7 studies, 485 participants). We also found low-certainty evidence from one study that was not included in the meta-analysis, indicating that personally tailored activities may make little or no difference to general restlessness, aggression, uncooperative behaviour, very negative and negative verbal behaviour (180 participants). Two studies investigated quality of life by proxy-rating. We found low-certainty evidence that personally tailored activities may result in little to no difference in quality of life in comparison with usual care or an active control group (MD -0.83, 95% CI -3.97 to 2.30; I² = 51%; 2 studies, 177 participants). Self-rated quality of life was only available for a small number of participants from one study, and there was little or no difference between personally tailored activities and usual care on this outcome (MD 0.26, 95% CI -3.04 to 3.56; 42 participants; low-certainty evidence). Two studies assessed adverse effects, but no adverse effects were observed. We are very uncertain about the effects of personally tailored activities on mood and positive affect. For negative affect we found moderate-certainty evidence that there is probably little to no effect of personally tailored activities compared to usual care or activities which are not personalised (standardised mean difference -0.02, 95% CI -0.19 to 0.14; 6 studies, 632 participants). We were not able to undertake meta-analyses for engagement and sleep-related outcomes, and we are very uncertain whether personally tailored activities have any effect on these outcomes. Two studies that investigated the duration of the effects of personally tailored activities indicated that the intervention effects they found persisted only during the period of delivery of the activities.

AUTHORS' CONCLUSIONS

Offering personally tailored activities to people with dementia in long-term care may slightly reduce agitation. Personally tailored activities may result in little to no difference in quality of life rated by proxies, but we acknowledge concerns about the validity of proxy ratings of quality of life in severe dementia. Personally tailored activities probably have little or no effect on negative affect, and we are uncertain whether they have any effect on positive affect or mood. There was no evidence that interventions were more likely to be effective if based on one theoretical model rather than another. We included three new studies in this updated review, but two studies were pilot trials and included only a small number of participants. Certainty of evidence was predominately very low or low due to several methodological limitations of and inconsistencies between the included studies. Evidence is still limited, and we remain unable to describe optimal activity programmes. Further research should focus on methods for selecting appropriate and meaningful activities for people in different stages of dementia.

Quality of Life Ratings and Proxy Bias in Primary Progressive Aphasia: Two Sides to the Story?

A valid measure of quality of life is important for clinical goal setting and for evaluating interventions. In the amnestic dementias, proxy-raters (e.g. friends, families, clinicians) typically rate quality of life lower than the self-ratings given by the person with dementia - a proxy bias. This study investigated whether the same proxy bias occurs in Primary Progressive Aphasia (PPA), a language-led dementia.Quality of life was measured in 18 individuals with PPA using self-ratings, and proxy-ratings by their main communication partner, using the Quality of Life in Alzheimer's Disease Scale.There was no strong evidence for proxy bias at a group level, with no consistent pattern across dyads, where proxy- and self-ratings did not show good levels of agreement. We suggest that self-ratings and proxy-ratings of quality of life in PPA are not interchangeable. Higher-powered investigation of the patterns observed here is warranted in future studies.

The value of supportive care: A systematic review of cost-effectiveness of non-pharmacological interventions for dementia

BACKGROUND

Almost 44 million people are currently living with dementia worldwide. This number is set to increase threefold by 2050, posing a serious threat to the sustainability of healthcare systems. Overuse of antipsychotic drugs for the management of the symptoms of dementia carries negative consequences for patients while also increasing the health expenditures for society. Supportive care (SC) interventions could be considered a safer and potentially cost-saving option. In this paper we provide a systematic review of the existing evidence regarding the cost-effectiveness and cost-utility of SC interventions targeted towards persons living with dementia and their caregivers.

METHODS

A systematic literature review was performed between February 2019 and December 2021 through searches of the databases PubMed (MEDLINE), Cochrane Library, CENTRAL, Embase and PsycINFO. The search strategy was based on PRISMA 2020 recommendations. We considered studies published through December 2021 with no lower date limit. We distinguished between five categories of SC strategies: cognitive therapies, physical activity, indirect strategies (organisational and environmental changes), interventions primarily targeted towards family caregivers, and multicomponent interventions.

RESULTS

Of the 5,479 articles retrieved, 39 met the inclusion criteria. These studies analysed 35 SC programmes located at different stages of the dementia care pathway. Eleven studies provided evidence of high cost-effectiveness for seven interventions: two multicomponent interventions; two indirect interventions; two interventions aimed at caregivers of community-dwelling persons with dementia; one community-based cognitive stimulation and occupational programme.

CONCLUSION

We find that the most promising SC strategies in terms of cost-effectiveness are multicomponent interventions (targeted towards both nursing home residents and day-care service users), indirect strategies (group living and dementia care management at home), some forms of tailored occupational therapy, together with some psychosocial interventions for caregivers of community-dwelling persons with dementia. Our results suggest that the adoption of effective SC interventions may increase the economic sustainability of dementia care.

What does a "good life" mean for people living with dementia? A protocol for a think-aloud study informing the value of care

Introduction

Economic evaluation currently focuses almost exclusively on the maximization of health, using the Quality-Adjusted Life-Year (QALY) framework with instruments such as the EQ-5D, with a limited number of health-focused dimensions providing the assessment of health benefit. This evaluative framework is likely to be insufficient for setting priorities in dementia care because of its exclusive concern with health. Data are also often collected from the perspective of a proxy, limiting the voice of those living with dementia in decision-making. This protocol describes a research project that aims to gather the perspectives of people living with dementia, their insights, and preferences for assessing their quality of life to inform economic evaluation outcome measurement and design with a goal of creating a more robust evidence base for the value of healthcare services. Specifically, this study will elucidate what a "good life" means to people living with dementia and how well instruments currently used in economic evaluation meet this description. This project will further test the acceptability of capability wellbeing instruments as self-report instruments and compare them to generic and dementia-specific preference-based instruments.

Methods and analysis

People living with dementia, diagnosed, or waiting to receive a formal diagnosis and with the capacity to participate in research, will be invited to participate in an hour "think aloud" interview. Participants will be purposefully selected to cover a range of dementia diagnoses, age, and sex, recruited through the integrated care, geriatric, and post-diagnostic clinics at St James' and Tallaght University Hospitals and dementia support groups in the Ireland. During the interview, participants will be invited to reflect on a "good life" and "think aloud" while completing four economic quality of life instruments with a perspective that goes beyond health (AD-5D/QOL-AD, AQOL-4D, ICECAP-O, ICECAP-SCM). An interviewer will then probe areas of difficulty when completing the instruments in a semi-structured way. The analysis will identify the frequency of errors in comprehension, retrieval, judgment, and response from verbatim transcripts. Qualitative data will be analyzed using constant comparison.

Ethics

The St James's Hospital and Tallaght University Hospital Joint Research Ethics Committee approved the study (Approval Date: 11 April 2022).

Profiles of resilience in multiple sclerosis family care-partners: A Canadian cross-sectional study

Background

Psychological resilience may play an important role in protecting multiple sclerosis care-partners from the negative effects of their support role. However, predictors of resilience in this population have yet to be identified.

Objectives

To identify characteristics predictive of psychological resilience in multiple sclerosis care-partners as informed by the Ecological Model of Resilience.

Methods

Informal multiple sclerosis care-partners (n = 540) completed an online survey. Psychological resilience was measured using the 25-item Connor-Davidson Resilience Scale. Sociodemographic and care-context predictors of resilience were analyzed using hierarchical regression.

Results

The mean resilience score was 59.0 (SD = 7.6) out of a possible 100. Sociodemographic variables accounted for 31% of the variance in resilience scores in multiple sclerosis care-partners. When care-context variables were incorporated into the model, 55% of variance was explained (F[7,320] = 26.824, p < 0.001). Each group of variables remained significant in both low disability and high disability models. Social support was the only individual variable that remained significant across all models (p < 0.05).

Conclusions

Multiple sclerosis care-partners differ strikingly from other caregiving populations. Both sociodemographic and care-context variables were found to promote or hinder resilience in multiple sclerosis care-partners. Social support, in particular, may be an important target for promoting resilience in multiple sclerosis care-partners and could be leveraged in future initiatives.

Do we agree or disagree? A systematic review of the application of preference-based instruments in self and proxy reporting of quality of life in older people

PURPOSE

Quality of life is an important person-centred outcome in health and aged care settings. Due to an increasing prevalence of cognitive decline and dementia in ageing populations, a proportion of older people receiving health and aged care services may not be able to reliably assess their own quality of life, highlighting the need for proxy assessment. This systematic review sought to investigate the level of agreement between self and proxy-report of older people's quality of life using established preference-based instruments of quality of life suitable for economic evaluation.

METHODS

A systematic review was conducted following PRISMA guidelines. Eight databases were searched: Web of Science, Scopus, Medline, Econlit, PsychINFO, CINAHL, Ageline and Cochrane Library. Information was extracted on the instruments, population samples (including any cognitive thresholds applied), mean scores, type of proxy, and measures of inter-rater agreement.

RESULTS

A total of 50 studies using eight different preference-based quality of life instruments were identified. Most studies were cross-sectional (72%) with a wide variety of cognitive assessments and thresholds applied to define older participants with cognitive impairment. The most common proxies were family members, mostly spouses. The level of agreement between self and proxy-report was generally poor - irrespective of the instrument applied or type of proxy - with proxy-report generally indicating lower levels of quality of life than self-report. There was some evidence of stronger agreement on more observable quality of life domains e.g., physical health and mobility, relative to less observable domains e.g. emotional well-being. Few studies tracked self and/or proxy-report of quality of life longitudinally.

CONCLUSIONS

More research is needed to develop evidence to inform guidance on self-report versus proxy-report of quality of life for older people receiving health and aged care services. Until then, the collection of both self and proxy reports as complementary measures is indicated.

How Effective are Pictures in Eliciting Information from People Living with Dementia? A Systematic Review

OBJECTIVES

Decline in language and cognitive functioning often deprives people living with moderate-to-severe dementia of self-reporting their quality of life (QoL) on the written and verbal formats of questionnaires. This systematic review aimed to evaluate the effectiveness of pictorial tools as an alternative method for enabling people living with dementia to self-report their QoL.

METHODS

PubMed, PsycINFO, CINAHL, and EMBASE were searched. Primary research studies reporting on information elicitation from people living with dementia through pictures were deemed eligible. Six studies satisfied the inclusion criteria. Methodological quality of the studies was evaluated through Downs and Black checklist. Data was extracted according to population, intervention, comparator, and outcomes (PICO) and results were summarized and supplemented by narrative synthesis.

RESULTS

Compared to usual communication methods, pictorial tools were found to have a superior effect on comprehension of conversations and decision-making abilities, minimal effect on preference consistency, and an undeterminable effect on discourse features.

CONCLUSIONS

There is consistent evidence that pictures enhance comprehension and might facilitate decision-making abilities.

CLINICAL IMPLICATIONS

QoL information can be elicited more effectively through pictorial tools. Future studies warrant development of pictorial versions of standardized QoL tools which will assist the inclusion of people living with severe dementia.

Care home residents with dementia: Prevalence, incidence, and associations with sleep disturbance in an English cohort study

INTRODUCTION

People living with dementia in care homes often have sleep disturbances, but little is known about incidence and importance.

METHODS

We interviewed 1483 participants in 97 care homes and report prevalence, 1-year incidence, and baseline associations of clinically significant sleep disturbance in people with dementia.

RESULTS

Baseline prevalence of clinically significant sleep disturbance was 13.7% (200/1460); 31.3% (457/1462) had them at least once over 16 months. One-year incidence was 25.2%. At baseline, residents with sleep disturbance had lower quality of life (mean difference -4.84; 95% confidence interval [CI] -6.53 to -3.16) and were more frequently prescribed sleep medications (odds ratio 1.75; CI 1.17 to 2.61) than other residents.

DISCUSSION

Approximately one-third of care home residents with dementia have or develop sleep disturbances over 1 year. These are associated with lower quality of life and prescription of sedatives, which may have negative outcomes; therefore, it is important to develop effective treatments.

A Comprehensive Study on Bias in Artificial Intelligence Systems

Humans are social beings. Emotions, like their thoughts, play an essential role in decision-making. Today, artificial intelligence (AI) raises expectations for faster, more accurate, more rational, and fairer decisions with technological advancements. As a result, AI systems have often been seen as an ideal decision-making mechanism. But what if these systems decide against you based on gender, race, or other characteristics? Biased or unbiased AI, that's the question! The motivation of this study is to raise awareness among researchers about bias in AI and contribute to the advancement of AI studies and systems. As the primary purpose of this study is to examine bias in the decision-making process of AI systems, this paper focused on (1) bias in humans and AI, (2) the factors that lead to bias in AI systems, (3) current examples of bias in AI systems, and (4) various methods and recommendations to mitigate bias in AI systems.

Quality of Life Assessment in Older Adults with Dementia: A Systematic Review

INTRODUCTION

In the absence of a cure, dementia is often managed by minimizing risk factors contributing to quality of life (QOL). Attitudes to dementia in older adults may differ from those in relatively younger adults. The aim was to conduct a systematic review of the literature to determine how QOL was assessed in adults, 65 years and older with dementia, and identify factors that influence the reported scores.

METHODS

A systematic review of full-text articles addressing QOL in older adults with dementia, published in English from January 1995 to September 2020, was conducted using PubMed and PsycINFO. We included studies that assessed QOL and involved participants 65 years and older. Studies were evaluated for inclusion by 2 independent pairs of reviewers. We assessed the quality of the studies using the Joanna Briggs Institute's Critical Appraisal Checklist. Study characteristics and findings were summarized. Analysis was by narrative synthesis. We identified social and clinical factors influencing QOL scores.

RESULTS

Of the 1,010 articles identified, 19 met the inclusion criteria. These 19 studies involved 6,279 persons with dementia, with sample sizes from 32 to 1,366. Mean age of participants ranged from 77.1 to 86.6 years. Five measurement tools were identified; Quality of Life in Alzheimer Disease (QOL-AD), Alzheimer Disease-Related Quality of Life (ADRQL), Quality of Life in Late-Stage Dementia (QUALID), QUALIDEM (a dementia-specific QOL tool), and DEMQOL (health-related QOL for people with dementia). Self-ratings of QOL were higher than proxy ratings. Factors commonly influencing self-ratings of QOL included depression, functional impairment, and polypharmacy. Common factors that influenced proxy ratings included functional impairment, presence of neuropsychiatric symptoms, cognitive impairment, and caregiver burden.

CONCLUSION

In evaluating QOL in dementia, self- and proxy reports may complement each other to ensure that all perspectives are addressed.

Effects of a digital reminiscing intervention on people with dementia and their care-givers and relatives

Dementia is a source of growing concern globally, and often impacts on social and communicative functioning. INdependent LIving Support Functions for the Elderly (IN LIFE) was a project carried out within the European Commission Research and Innovation programme Horizon 2020 that resulted in the development of two digital communication aids for reminiscence intervention for elderly people with dementia and their communication partners. The purpose of this intervention study was to investigate the effects on quality of life for people with dementia when using these aids. People with dementia (N = 118) and their formal care-givers (N = 187) and relatives (N = 9) were given the communication aids for a period of 4–12 weeks. To assess a range of outcomes, questionnaires developed within the project were used along with the EQ-5D (European Quality of Life – 5 Dimensions) and QoL-AD (Quality of Life in Alzheimer's Disease) questionnaires. Quality of life improved among people with dementia when measured using EQ-5D (p < 0.05). There was also a correlation between the impact on the participants’ health and wellbeing, the carers’ rating of the usefulness of the digital communication aids and the care-givers’ satisfaction with using technology (p < 0.05). These results indicate that digital communication aids may be useful in social interaction where one partner has dementia.

Inter-rater reliability of care home staff's proxy judgements with residents' assessments of their own health-related quality of life: an analysis of the PATCH trial EQ-5D data

OBJECTIVES

to compare care staff proxies with care home residents' self-assessment of their health-related quality of life (HRQoL).

METHODS

we assessed the degree of inter-rater reliability between residents and care staff proxies for the EQ-5D-5L index, domains and EQ Visual Analogue Scale at baseline, 3 months and 6 months, collected as part of the PATCH trial. We calculated kappa scores. Interpreted as <0 no agreement, 0-0.2 slight, 0.21-0.60 fair to moderate and >0.6 substantial to almost perfect agreement. Qualitative interviews with care staff and researchers explored the challenges of completing these questions.

RESULTS

over 50% of the HRQoL data from residents was missing at baseline compared with a 100% completion rate by care staff proxies. A fair-to-moderate level of agreement was found for the EQ-5D-5L index. A higher level of agreement was achieved for the EQ-5D-5L domains of mobility and pain. Resident 'non-completers' were more likely to: be older, have stayed a longer duration in the care home, have lower Barthel Index and Physical Activity and Mobility in Residential Care (PAM-RC) scores, a greater number of co-morbidities and have joined the trial through consultee agreement. Interviews with staff and researchers indicated that it was easier to rate residents' mobility levels than other domains, but in general it was difficult to obtain data from residents or to make an accurate proxy judgement for those with dementia.

CONCLUSIONS

whilst assessing HRQoL by care staff proxy completion provides a more complete dataset, uncertainty remains as to how representative these values are for different groups of residents within care homes.

The impact of Covid-19-related distancing on the well-being of nursing home residents and their family members: a qualitative study

OBJECTIVES

The aim of this study is to examine the consequences of Covid-19-related isolation and social restrictions on the well-being of nursing home residents and their family members, and to analyze how distancing has affected the relationships of family members with residents and the nursing home staff.

DESIGN

The data consist of 41 thematic one-on-one interviews conducted during May-December 2020 with family members of nursing home residents. Convenience sampling was utilized by asking several nursing homes in different parts of Finland to relay a contact request from the researchers to the residents' family members. The main themes of the interviews were lockdown and visiting restrictions. Subthemes included the frequency of visits, other means of interaction, changes in the relationships of family members with their loved ones and with nursing home staff, and the feelings aroused by the situation. The interviews were audio recorded and transcribed verbatim, resulting in 794 pages of data.

METHOD

The qualitative study uses inductive content analysis. NVivo12 software facilitated the systematic coding of the data.

RESULTS

According to the family members, distancing aggravated the residents' pre-existing conditions: they reported a sudden progression in memory disorders and significant deterioration in physical abilities, for example. Both residents and family members experienced anxiety, grief, and severe stress, and family members expressed concern that residents might die due to a lack of social contact and activity. Family members were also frustrated about not being able to touch their relatives or participate in their care, and therefore sometimes thought that their visits were useless. New forms of interaction with family members, introduced by the nursing homes, were appreciated. However, some family members perceived the interactional protocols as unfair and complained about insufficient information.

CONCLUSIONS

The findings underline the need for nursing homes to implement a good interactional protocol. Overall, the results show that the measures taken to protect residents' health during the Covid-19 outbreak were short-sighted in terms of the social dimension of well-being. It is therefore important to continue developing safe and humane solutions for interaction when social restrictions are in place. Tweetable abstract: Covid-19-related distancing has caused anxiety, grief, and severe stress for nursing home residents and their family members.

Primary dementia care based on the individual needs of the patient: study protocol of the cluster randomized controlled trial, DemStepCare

Background

Most people with dementia (PwD) are cared for at home, with general practitioners (GPs) playing a key part in the treatment. However, primary dementia care suffers from a number of shortcomings: Often, diagnoses are made too late and therapies by GPs do not follow the guidelines. In cases of acute crises, PwD are too often admitted to hospital with adverse effects on the further course of the disease.

The aim of this study is to implement and evaluate a new GP-based, complex dementia care model, DemStepCare. DemStepCare aims to ensure demand-oriented, stepped care for PwD and their caregivers.

Methods/design

In a cluster randomized controlled trial, the care of PwD receiving a complex intervention, where the GP is supported by a multi-professional team, is compared to (slightly expanded) usual care.

GPs are clustered by GP practice, with 120 GP practices participating in total. GP practices are randomized to an intervention or a control group. 800 PwD are to be included per group. Recruitment takes place in Rhineland-Palatinate, Germany. In addition, a second control group with at least 800 PwD will be formed using aggregated routine data from German health insurance companies. The intervention comprises the training of GPs, case management including repeated risk assessment of the patients’ care situation, the demand-oriented service of an outpatient clinic, an electronic case record, external medication analyses and a link to regional support services. The primary aims of the intervention are to positively influence the quality of life for PwD, to reduce the caregivers’ burden, and to reduce the days spent in hospital. Secondary endpoints address medication adequacy and GPs’ attitudes and sensitivity towards dementia, among others.

Discussion

The GP-based dementia care model DemStepCare is intended to combine a number of promising interventions to provide a complex, stepped intervention that follows the individual needs of PwD and their caregivers. Its effectiveness and feasibility will be assessed in a formative and a summative evaluation.

Trial registration

German Register of Clinical Trials (Deutsches Register Klinischer Studien, DRKS), DRKS00023560. Registered 13 November 2020 - Retrospectively registered. HTML&TRIAL_ID=DRKS00023560.

Health-related quality of life in people with predementia Alzheimer's disease, mild cognitive impairment or dementia measured with preference-based instruments: a systematic literature review

BACKGROUND

Obtaining reliable estimates of the health-related quality of life (HR-QoL) of people with predementia Alzheimer's disease [AD] (preclinical or prodromal AD), mild cognitive impairment (MCI) and dementia is essential for economic evaluations of related health interventions.

AIMS

To provide an overview of which quality of life instruments are being used to assess HR-QoL in people with predementia AD, MCI or dementia; and, to summarise their reported HR-QoL levels at each stage of the disease and by type of respondent.

METHODS

We systematically searched for and reviewed eligible studies published between January 1990 and the end of April 2017 which reported HR-QoL for people with predementia AD, MCI or dementia. We only included instruments which are preference-based, allowing index scores/utility values to be attached to each health state they describe based on preferences obtained from population surveys. Summary results were presented by respondent type (self or proxy), type of instrument, geographical location and, where possible, stage of disease. Health state utility values derived using the EuroQoL 5-Dimensions (EQ-5D) were meta-analysed by pooling reported results across all studies by disease severity (MCI, mild, mild to moderate, moderate, severe dementia, not specified) and by respondent (person with dementia, carer, general public, not specified), using a fixed-effects approach.

RESULTS

We identified 61 studies which reported HR-QoL for people with MCI or dementia using preference-based instruments, of which 48 used the EQ-5D. Thirty-six studies reported HR-QoL for mild and/or moderate disease severities, and 12 studies reported utility values for MCI. We found systematic differences between self-rated and proxy-rated HR-QoL, with proxy-rated utility valued being significantly lower in more severe disease states.

CONCLUSIONS

A substantial literature now exists quantifying the impact of dementia on HR-QoL using preference-based measures, giving researchers and modellers a firmer basis on which to select appropriate utility values when estimating the effectiveness and cost-effectiveness of interventions in this area. Further research is required on HR-QoL of people with preclinical and prodromal AD and MCI, possible differences by type of dementia, the effects of comorbidities, study setting and the informal caregiver's own HR-QoL, including any effect of that on their proxy-ratings.

Racial/Ethnic Differences in Health-Related Quality of Life in Persons With and Without Dementia

BACKGROUND/OBJECTIVES

Given the lack of effective pharmacologic strategies to prevent, slow, or reverse dementia progression, maximizing quality of life (QOL) is a major priority for persons living with dementia. Despite well-documented racial/ethnic disparities in dementia incidence and prevalence, it is unknown whether there are racial/ethnic disparities in QOL among persons with dementia. The objective of this study was to determine if there are racial/ethnic differences in poor health-related quality of life (HRQOL) among persons with and without dementia in a nationally-representative cohort.

DESIGN

Repeated measures cross-sectional analysis of a prospective cohort study.

SETTING

United States nationally-representative National Health and Aging Trends Study (2011-2018).

PARTICIPANTS

Non-nursing home-dwelling Black, Latino, and white adults age 65+ (n = 10,886).

MEASUREMENTS

We estimated racial/ethnic differences in five dichotomous indicators of poor HRQOL (depressive and anxiety symptoms, self-rated health, pain, and physical functional limitations), stratified by dementia status (probable, possible, none). We used generalized estimating equations to estimate prevalence ratios (PRs) and differences, and marginal standardization to estimate prevalence.

RESULTS

Generally, Blacks and Latinos reported higher prevalence of poor HRQOL compared with whites. The largest differences were observed for self-rated health, and Latino-white differences were slightly larger compared to Black-white differences. PRs were larger among those with no dementia. For example, the Black versus white PRs for poor self-rated health were 1.93 (95% confidence interval (CI) = 1.82-2.04) among the no dementia group and 1.21 (95% CI = 1.12-1.31) among the probable dementia group; Latino versus white PRs for these comparisons were 2.39 (2.21-2.59) and 1.48 (1.35-1.62), respectively. Prevalence differences also showed racial/ethnic differences, but these were similar across dementia statuses.

CONCLUSIONS

We observed racial/ethnic disparities in poor HRQOL, showing greater unmet clinical needs among Black and Latino versus white older adults. Relative disparities were smaller in those with dementia, but absolute magnitudes of disparities were similar by dementia status.

Cost-effectiveness of the Namaste care family program for nursing home residents with advanced dementia in comparison with usual care: a cluster-randomized controlled trial

BACKGROUND

Dementia is a progressive disease that decreases quality of life of persons with dementia and is associated with high societal costs. The burden of caring for persons with dementia also decreases the quality of life of family caregivers. The objective of this study was to assess the societal cost-effectiveness of Namaste Care Family program in comparison with usual care in nursing home residents with advanced dementia.

METHODS

Nursing homes were randomized to either Namaste Care Family program or usual care. Outcome measures of the cluster-randomized trial in 231 residents included Quality of Life in Late-Stage Dementia (QUALID) and the Gain in Alzheimer Care Instrument (GAIN) for family caregivers over 12 months of follow-up. Health states were measured using the EQ-5D-3L questionnaire which were translated into utilities. QALYs were calculated by multiplying the amount of time a participant spent in a specific health state with the utility score associated with that health state. Healthcare utilization costs were estimated using standard unit costs, while intervention costs were estimated using a bottom-up approach. Missing cost and effect data were imputed using multiple imputation. Bootstrapped multilevel models were used after multiple imputation. Cost-effectiveness acceptability curves were estimated.

RESULTS

The Namaste Care Family program was more effective than usual care in terms of QUALID (- 0.062, 95%CI: - 0.40 to 0.28), QALY (0.0017, 95%CI: - 0.059 to 0.063) and GAIN (0.075, 95%CI: - 0.20 to 0.35). Total societal costs were lower for the Namaste Care Family program as compared to usual care (- 552 €, 95%CI: - 2920 to 1903). However, these differences were not statistically significant. The probability of cost-effectiveness at a ceiling ratio of 0 €/unit of effect extra was 0.70 for the QUALID, QALY and GAIN.

CONCLUSIONS

The Namaste Care Family program is dominant over usual care and, thus, cost-effective, although statistical uncertainty was considerable.

TRIAL REGISTRATION

Netherlands Trial Register ( http://www.trialregister.nl/trialreg/index.asp , identifier: NL5570, date of registration: 2016/03/23).

Personally tailored activities for improving psychosocial outcomes for people with dementia in community settings

BACKGROUND

People with dementia living in the community, that is in their own homes, are often not engaged in meaningful activities. Activities tailored to their individual interests and preferences might be one approach to improve quality of life and reduce challenging behaviour.

OBJECTIVES

To assess the effects of personally tailored activities on psychosocial outcomes for people with dementia living in the community and their caregivers. To describe the components of the interventions. To describe conditions which enhance the effectiveness of personally tailored activities in this setting.

SEARCH METHODS

We searched ALOIS: the Cochrane Dementia and Cognitive Improvement Group's Specialized Register on 11 September 2019 using the terms: activity OR activities OR occupation* OR "psychosocial intervention" OR "non-pharmacological intervention" OR "personally-tailored" OR "individually-tailored" OR individual OR meaning OR involvement OR engagement OR occupational OR personhood OR "person-centred" OR identity OR Montessori OR community OR ambulatory OR "home care" OR "geriatric day hospital" OR "day care" OR "behavioural and psychological symptoms of dementia" OR "BPSD" OR "neuropsychiatric symptoms" OR "challenging behaviour" OR "quality of life" OR depression. ALOIS contains records of clinical trials identified from monthly searches of a number of major healthcare databases, numerous trial registries and grey literature sources.

SELECTION CRITERIA

We included randomised controlled trials and quasi-experimental trials including a control group offering personally tailored activities. All interventions comprised an assessment of the participant's present or past interests in, or preferences for, particular activities for all participants as a basis for an individual activity plan. We did not include interventions offering a single activity (e.g. music or reminiscence) or activities that were not tailored to the individual's interests or preferences. Control groups received usual care or an active control intervention.

DATA COLLECTION AND ANALYSIS

Two review authors independently checked the articles for inclusion, extracted data, and assessed the methodological quality of all included studies. We assessed the risk of selection bias, performance bias, attrition bias, and detection bias. In case of missing information, we contacted the study authors.

MAIN RESULTS

We included five randomised controlled trials (four parallel-group studies and one cross-over study), in which a total of 262 participants completed the studies. The number of participants ranged from 30 to 160. The mean age of the participants ranged from 71 to 83 years, and mean Mini-Mental State Examination (MMSE) scores ranged from 11 to 24. One study enrolled predominantly male veterans; in the other studies the proportion of female participants ranged from 40% to 60%. Informal caregivers were mainly spouses. In four studies family caregivers were trained to deliver personally tailored activities based on an individual assessment of interests and preferences of the people with dementia, and in one study such activities were offered directly to the participants. The selection of activities was performed with different methods. Two studies compared personally tailored activities with an attention control group, and three studies with usual care. Duration of follow-up ranged from two weeks to four months. We found low-certainty evidence indicating that personally tailored activities may reduce challenging behaviour (standardised mean difference (SMD) -0.44, 95% confidence interval (CI) -0.77 to -0.10; I2 = 44%; 4 studies; 305 participants) and may slightly improve quality of life (based on the rating of family caregivers). For the secondary outcomes depression (two studies), affect (one study), passivity (one study), and engagement (two studies), we found low-certainty evidence that personally tailored activities may have little or no effect. We found low-certainty evidence that personally tailored activities may slightly improve caregiver distress (two studies) and may have little or no effect on caregiver burden (MD -0.62, 95% CI -3.08 to 1.83; I2 = 0%; 3 studies; 246 participants), caregivers' quality of life, and caregiver depression. None of the studies assessed adverse effects, and no information about adverse effects was reported in any study.

AUTHORS' CONCLUSIONS

Offering personally tailored activities to people with dementia living in the community may be one approach for reducing challenging behaviour and may also slightly improve the quality of life of people with dementia. Given the low certainty of the evidence, these results should be interpreted with caution. For depression and affect of people with dementia, as well as caregivers' quality of life and burden, we found no clear benefits of personally tailored activities.

Quality of life and caregiver burden in familial frontotemporal lobar degeneration: Analyses of symptomatic and asymptomatic individuals within the LEFFTDS cohort

OBJECTIVE

The Longitudinal Evaluation of Familial Frontotemporal Dementia Subjects evaluates familial frontotemporal lobar degeneration (FTLD) kindreds with MAPT, GRN, or C9orf72 mutations. Objectives were to examine whether health-related quality of life (HRQoL) correlates with clinical symptoms and caregiver burden, and whether self-rated and informant-rated HRQoL would correlate with each other.

METHODS

Individuals were classified using the Clinical Dementia Rating (CDR® ) Scale plus National Alzheimer's Coordinating Center (NACC) FTLD. HRQoL was measured with DEMQOL and DEMQOL-proxy; caregiver burden with the Zarit Burden Interview (ZBI). For analysis, Pearson correlations and weighted kappa statistics were calculated.

RESULTS

The cohort of 312 individuals included symptomatic and asymptomatic individuals. CDR® plus NACC FTLD was negatively correlated with DEMQOL (r = -0.20, P = .001), as were ZBI and DEMQOL (r = -0.22, P = .0009). There was fair agreement between subject and informant DEMQOL (κ = 0.36, P <.0001).

CONCLUSION

Lower HRQoL was associated with higher cognitive/behavior impairment and higher caregiver burden. These findings demonstrate the negative impact of FTLD on individuals and caregivers.

A qualitative exploration of the content and face validity of preference-based measures within the context of dementia

BACKGROUND

Assessing the cost-effectiveness of interventions for people with dementia, based on cost per quality-adjusted life years (QALYs) gained, requires that the measures used to derive QALYs are preference-based whilst also being valid, feasible to use, comprehensible and acceptable for people with dementia. The aim of this study was to assess the content and face validity of six preference-based measures (PBMs) within the context of dementia.

METHODS

Qualitative focus groups and interviews were conducted with community-dwelling individuals with mild dementia and carers of people with dementia. After exploring participants' understanding of 'quality of life' (QoL), six PBMs were assessed for content and face validity: two measures assessing health-related QoL (EQ-5D-5L and AQoL-8D); two covering broader aspects of capability wellbeing and social care-related QoL (ICECAP-O and ASCOT); and two dementia-specific QoL measures (DEMQOL-U and AD-5D). A random mix of one health-related QoL measure, one wellbeing measure, and one dementia-specific measure was explored in each session. All sessions were audiotaped and transcribed verbatim. Data were analysed thematically.

RESULTS

Nine individuals with mild dementia and 17 carers of people with dementia participated across 4 focus groups and 10 interviews. Participants perceived 9 broad QoL domains as relevant to them: Activity, Autonomy, Cognition, Communication, Coping, Emotions, End-of-Life, Physical Functioning, and Relationships. These domains had limited overlap with the content of the six PBMs. Assessment of face validity was summarized into eight themes: (1) ambiguous questions, (2) double -barrelled questions, (3) difficult/abstract questions, (4) judgemental/confronting questions, (5) lack of relevance and comprehensiveness, (6) response options, (7) layout/format and (8) proxy-response. There was no clear preference for one of the six measures explored; participants identified advantages and disadvantages across all measures. Although particularly designed for individuals with dementia, dementia-specific QoL measures were not always favoured over non-specific measures.

CONCLUSION

Given the shortcomings of PBMs identified in this study, further empirical comparative analyses are necessary to guide the selection of PBMs for future dementia research.

Acceptability and Validity of the EQ-5D in Patients Living With Dementia

OBJECTIVES

To assess the acceptability and validity of the 3 levels of the EQ-5D (EQ-5D-3L) compared with the Quality of Life in Alzheimer's Diseases (QoL-AD) in patients living with dementia.

METHODS

The analysis was based on 560 dyads of persons with dementia and their caregivers of the multicenter observational study of dementia care networks in Germany (DemNet-D). Health-related quality of life was assessed by face-to-face interviews using the EQ-5D-3L (self-rating) and the QoL-AD (self- and proxy-rating). The number of missing values, the score ranges (observed vs possible range) and the floor and ceiling effects were used to assess the acceptability. We used one-way analyses of variance and multivariate linear regression models to evaluate the discriminative ability. The convergent validity was assessed using Spearman's correlation coefficient (r_s) and multivariate regression models.

RESULTS

The EQ-5D index had a higher response rate (89% vs 84%) and a comparable floor (>1%) but a higher ceiling effect (18% vs >1%) compared with the QoL-AD. Both measures can significantly differentiate between different stages of general health, instrumental activities of daily living, and depression. The EQ-5D index and the visual analog scale self-rating scores strongly correlated with the QoL-AD self-rating (r_s = 0.644 and 0.553, respectively) but not with the proxy-rating score (r_s = 0.314 and r_s = 0.170, respectively), which was confirmed by multivariate regression analyses.

CONCLUSION

The results satisfy acceptability, discriminative ability, and convergent validity for moderately cognitively and functionally impaired patients living with dementia. The EQ-5D-3L performed comparably with the QoL-AD, and could, therefore, be used in economic evaluations in dementia. The differences between self- and proxy-ratings should be evaluated and considered in the interpretation of health-related quality of life scores.

Proxy reporting of health-related quality of life for people with dementia: a psychometric solution

Background

The growing move towards personalised health and social care systems means that every effort needs to be made to generate patient-reported outcome data. However, the deteriorating nature of dementia can make it difficult for people with dementia to complete self-reported questionnaires and it is often necessary to rely on a family member (proxy) to report on their behalf. There is little evidence to guide how the difference between self- and proxy-reports of health reported quality of life (HRQL) in dementia can be interpreted.

Methods

We recruited people with dementia and their family carers from 78 memory Assessment Services in the UK. We used Rasch measurement methods to investigate whether a HRQL questionnaire known as DEMQOL (self-reported by the person with dementia) and DEMQOL-Proxy (proxy-reported by a family carer) can be placed on the same continuum and whether a revised scoring algorithm, based on this equated model, can be developed that takes account of the relationship between self- and proxy-reports.

Results

In a sample of 1434 patients and 1030 carers, our findings supported equating DEMQOL/DEMQOL-Proxy (overall fit to the model; no mis-fitting items) after addressing specific issues (eight disordered items requiring re-scoring, four pairs locally dependent items, and five items showing DIF). Cross walk tables have been produced.

Conclusions

We have established for the first time that DEMQOL and DEMQOL-Proxy can be placed on the same continuum and that patients and carer proxies are reporting on the same construct when they complete these questionnaires. Where possible both DEMQOL and DEMQOL-Proxy should still be administered together, using the improved scoring algorithm reported here. Where only DEMQOL-Proxy is available, the cross walk tables provide an estimate of DEMQOL for a particular person from their DEMQOL-Proxy score.

Assessing the proxy response bias of EQ-5D-3 L in general population: a study based on a large-scale representative household health survey using propensity score matching

Background

Proxy respondent-someone who assists the intended respondent or responds on their behalf-are widely applied in the measurement of health-related quality of life (HRQL). However, proxies may not provide the same responses as the intended respondents, which may bias the findings.

Objectives

To determine whether the use of proxies is related to socio-demographic characteristics of the intended respondent, and to assess the possible proxy response bias of Chinese version of EQ-5D-3 L in general population.

Methods

A cross-sectional study based on a provincially representative sample from 2013 National Health Service Survey (NHSS) in Shaanxi, China was performed. HRQL was measured by Chinese version of EQ-5D-3 L. Propensity score matching (PSM) was used to get matched pairs of self-reports and proxy-reports. Before and after PSM, univariate logistic and linear models including the indicator of proxy response as the only independent variable, were employed to assess the possible proxy response bias of the dimensional and overall health status of EQ-5D-3 L respectively.

Results

19.9% of the responses involved a proxy. Before PSM, the proxy-report group was younger in age and reported less unhealthy lifestyle, lower prevalence of disease, and less hospitalization than the self-report group. After PSM, it showed that the proxy-report group was statistically more likely to report health problem on each dimension of EQ-5D-3 L, with odds ratios larger than one comparing with self-report group. The means of EQ-5D-3 L index and EQ VAS of proxy-report group were 0.022 and 0.834 lower than self-report group.

Conclusions

Significantly negative proxy response bias was found in Chinese EQ-5D-3 L in general population, and the magnitude of the bias was larger in physical dimensions than psychological dimensions after using PSM to control confounders.

A Review of the Development and Application of Generic Preference-Based Instruments with the Older Population

Older people (aged 65 years and over) are the fastest growing age cohort in the majority of developed countries, and the proportion of individuals defined as the oldest old (aged 80 years and over) living with physical frailty and cognitive impairment is rising. These population changes put increasing pressure on health and aged care services, thus it is important to assess the cost effectiveness of interventions targeted for older people across health and aged care sectors to identify interventions with the strongest capacity to enhance older peoples' quality of life and provide value for money. Cost-utility analysis (CUA) is a form of economic evaluation that typically uses preference-based instruments to measure and value health-related quality of life for the calculation of quality-adjusted life-years (QALYS) to enable comparisons of the cost effectiveness of different interventions. A variety of generic preference-based instruments have been used to measure older people's quality of life, including the Adult Social Care Outcomes Toolkit (ASCOT); Health Utility Index Mark 2 (HUI2); Health Utility Index Mark 3 (HUI3); Short-Form-6 Dimensions (SF-6D); Assessment of Quality of Life-6 dimensions (AQoL-6D); Assessment of Quality of Life-8 dimensions (AQoL-8D); Quality of Wellbeing Scale-Self-Administered (QWB-SA); 15 Dimensions (15D); EuroQol-5 dimensions (EQ-5D); and an older person specific preference-based instrument-the Investigating Choice Experiments Capability Measure for older people (ICECAP-O). This article reviews the development and application of these instruments within the older population and discusses the issues surrounding their use with this population. Areas for further research relating to the development and application of generic preference-based instruments with populations of older people are also highlighted.

HOMESIDE: home-based family caregiver-delivered music and reading interventions for people living with dementia: protocol of a randomised controlled trial

INTRODUCTION

Pharmacological interventions to address behavioural and psychological symptoms of dementia (BPSD) can have undesirable side effects, therefore non-pharmacological approaches to managing symptoms may be preferable. Past studies show that music therapy can reduce BPSD, and other studies have explored how formal caregivers use music in their caring roles. However, no randomised study has examined the effects on BPSD of music interventions delivered by informal caregivers (CGs) in the home setting. Our project aims to address the need for improved informal care by training cohabiting family CGs to implement music interventions that target BPSD, and the quality of life (QoL) and well-being of people with dementia (PwD) and CGs.

METHODS AND ANALYSIS

A large international three-arm parallel-group randomised controlled trial will recruit a sample of 495 dyads from Australia, Germany, UK, Poland and Norway. Dyads will be randomised equally to standard care (SC), a home-based music programme plus SC, or a home-based reading programme plus SC for 12 weeks. The primary outcome is BPSD of PwD (measured using the Neuropsychiatric Inventory-Questionnaire). Secondary outcomes will examine relationship quality between CG and PwD, depression, resilience, competence, QoL for CG and QoL for PwD. Outcomes will be collected at baseline, at the end of the 12-week intervention and at 6 months post randomisation. Resource Utilisation in Dementia will be used to collect economic data across the life of the intervention and at 6-month follow-up. We hypothesise that the music programme plus SC will generate better results than SC alone (primary comparison) and the reading programme plus SC (secondary comparison).

ETHICS AND DISSEMINATION

Ethical approval has been obtained for all countries. Results will be presented at national and international conferences and published in scientific journals and disseminated to consumer and caregiver representatives and the community.

TRIAL REGISTRATION NUMBERS

ACTRN12618001799246p; NCT03907748.

Participating in core outcome set development via Delphi surveys: qualitative interviews provide pointers to inform guidance

OBJECTIVES

To explore participants' views of Delphi surveys in core outcome set (COS) development.

STUDY DESIGN AND SETTING

Patients and health professionals (n=24) from seven recently concluded COS studies that had involved a Delphi survey took part in semistructured qualitative interviews (telephone and email exchange). Interviews explored participants' understanding of COS and their experiences of the Delphi survey. Analysis was thematic.

RESULTS

Several interviewees had previously participated in two or more COS or Delphi surveys. Those with multiple experiences of participation generally understood the purpose of COS and were satisfied with the Delphi survey. However, some interviewees who were first-time participants struggled to understand the purpose of COS and aspects of the Delphi survey, which limited their contribution and satisfaction with the study. Interviewees also differed in how they interpreted and subsequently used the written documentation provided to COS participants. Some interviewees wanted guidance regarding whose perspective to take into account when scoring outcomes and on how to use the scoring system. Interviewees reported being motivated to take part by the international and expert consensus aspects of the Delphi survey. A few interviewees reported experiencing either positive or negative emotional impacts arising from when they reviewed outcomes and stakeholder feedback.

CONCLUSION

This study identifies important information that should be communicated to COS Delphi study participants. It also indicates the importance of communicating about COS Delphi studies in ways that are accessible and salient to participants, to enhance their experience of participation and make the process more meaningful for all.

Adaptation of the DEMQOL-Proxy for routine use in care homes: a cross-sectional study of the reliability and validity of DEMQOL-CH

OBJECTIVE

To investigate the routine use of a measure of quality of life (QoL) in care homes and assess its psychometric properties when used by care staff.

DESIGN

A cross-sectional two-phase study.

SETTING AND PARTICIPANTS

Data were collected from care staff in seven care homes in East Sussex, England.

METHOD

Phase I: The ability of care staff from two care homes to use the DEMQOL-Proxy without interviewer administration was assessed using agreement analysis between a self-administered and interviewer-administered version of the instrument. Based on these findings, DEMQOL-Proxy was adapted into a new version, DEMQOL-CH, for use as a self-administered instrument in care homes. We assessed agreement between the new DEMQOL-CH and DEMQOL-Proxy to ensure DEMQOL-CH was used correctly. Phase II: A preliminary assessment of the psychometric properties of DEMQOL-CH when used routinely was completed in a further five care homes.

RESULTS

Phase I: Nineteen care staff from two care homes completed QoL measurements for residents. Systematic error was identified when staff self-completed the DEMQOL-Proxy without an interviewer. We modified the DEMOoL-Proxy to create DEMQOL-CH; this reduced the error, producing a version that could be used more accurately by care staff. Phase II: Eleven care staff from five care homes rated resident QoL routinely. DEMQOL-CH showed acceptable psychometric properties with satisfactory reliability and validity and a clear factor structure.

CONCLUSIONS

The research presents positive preliminary data on the acceptability, feasibility and performance of routine QoL measurement in care homes using an adapted version of DEMQOL-Proxy, the DEMQOL-CH. Results provide evidence to support the concept that routine measurement of QoL may be possible in care homes. Research is needed to refine and test the methodology and instrument further and to explore the potential for benefits to residents, staff and care homes in larger and more representative populations.

Exploring the views of being a proxy from the perspective of unpaid carers and paid carers: developing a proxy version of the Adult Social Care Outcomes Toolkit (ASCOT)

Background

Outcomes-based policy and administration of public services present a compelling argument for the value of outcomes data. However, there are a number of challenges inherent in collecting these data from people who are unable to complete a paper-based survey or interview due to cognitive or communication impairments. In this paper, we explore the views of being a proxy from the perspective of unpaid carers and paid carers who may be asked to act as a proxy on behalf of the person(s) they care for. We consider the key issues that need to be addressed when adapting an instrument designed to measure social care outcomes, the Adult Social Care Outcomes Tool (ASCOT), into a proxy-report tool.

Methods

Participants took part in either a focus group (35 paid carers in eight focus groups), or a one-to-one interview (eight unpaid carers). All participants were recruited via carer organisations and care providers. Transcripts, field notes and audio data collected during focus groups and interviews were analysed using a thematic framework approach.

Results

Participants agreed that any person acting as a proxy would need to be very familiar with the care recipient, as well as their needs and care provision. A number of provisions for proxy respondents were proposed to improve face validity and acceptability of completing a questionnaire by proxy, and to ensure that any potential bias is reduced in the design of the questionnaire. These included: providing two sets of response options for each proxy perspective (the proxy themselves and the proxy view of how they think the care recipient would respond); a comments box to help people explain why they have selected a given response option (especially where these indicate unmet need); and providing clear guidance for the proxy respondent on how they should complete the questionnaire.

Conclusions

This study has shown some of the challenges involved in assessing outcomes by proxy and explored some potential ways these can be mitigated. The findings highlight the benefits of developing and testing proxy measures in a robust way to widen participation in social care research.

Electronic supplementary material

The online version of this article (10.1186/s12913-019-4025-1) contains supplementary material, which is available to authorized users.

The End of Life Within Social Work Literature: A Conceptual Review

The current conceptual review sought to identify and describe how the end of life was conceptualized and operationalized in top-ranking, peer-reviewed social work journals considering the highly individualized and multidimensional experience of dying put forth by modern scholars and social work practitioners. An iterative content analysis of included articles (N = 103) revealed six themes within reported definitions and four themes within eligibility criteria. Definitions (n = 66) related to treatment responsiveness, the death process, dying, prognosis, admission to specific services, and old age. Eligibility criteria (n = 18) related to proxy assessment, diagnosis, prognosis, and functional ability assessments. Over one-third of included articles did not define what was meant by the end of life (36%; n = 37) and the majority did not include eligibility criteria (83%; n = 85). In conclusion, the complex lived experience of dying was not manifest within included articles raising important implications for research (e.g., measurement, meta-analysis) and social work practice (viz. service eligibility).

Exploring the association between optimism and quality of life among informal caregivers of persons with dementia

ABSTRACTObjective:We aimed to analyze the relationship between optimism and quality of life (QoL) among informal caregivers of patients with dementia (PWD).

DESIGN

In this cross-sectional study, a hierarchical multiple linear regression analysis was used to determine the association between optimism and caregiver's QoL after controlling the effect of different covariates, including burden.

PARTICIPANTS

A sample of 130 PWD and their informal caregivers underwent a comprehensive protocol of assessment.

MEASUREMENTS

Caregivers completed the Battery of Generalized Expectancies of Control Scales, the Zarit Burden Interview, and the World Health Organization Quality of Life-Brief as measure of QoL. Optimism was estimated based on the combination of three expectancies of control, namely, self-efficacy, contingency, and success.

RESULTS

QoL correlated positively with optimism and negatively with burden. Optimism predicted each dimension of QoL, even after controlling for the effect of sociodemographic, care-recipients' clinical covariates, and burden in all models.

CONCLUSION

Optimism consistently predicted well-being and QoL in informal caregivers of PWD.

"To be, or not to be": experiencing deterioration among people with young-onset dementia living alone

Having dementia before the age of 65 (YOD) represents a radical break from an age-normative and expected life course. The disease afflicts the person's identity, threatens the self-image and self-confidence, and erodes the person's plans. The aim of the study was toexamine how people living alone with YOD perceive the course of dementia, their needs, and coping strategies, with a focus on narrating everyday life experiences. A longitudinal study using a qualitative approach was used. Five interviews, each with 10 informants, took place every 6 months from 2014 to 2017. The main theme is the person's experiences of changes of identity over time. The most significant aspects of their experiences of the dementia affecting them and their reactions are these: the initial signs, coping efforts, concealing the diagnosis, social retraction, existential anxiety, revival of the self, worse and worse, and health personnel as background. The study concluded thatpeople with dementia are able to describe their experiences and needs for a long time during the progression of dementia. Their voices should be listened to for planning of services. Personalized care should be used to support them in order to preserve their identity in a normalized everyday life as far as possible.

Health-related quality of life in people with advanced dementia: a comparison of EQ-5D-5L and QUALID instruments

BACKGROUND

Assessing health-related quality of life (HRQOL) in people with advanced dementia is challenging but important for informed decision-making. Proxy measurement of this construct is difficult and is often rated lower than self-report. Accurate proxy rating of quality of life in dementia is related to identification of concepts important to the person themselves, as well as the sensitivity of the measures used. The main aim of this study was to compare the performance of two instruments-QUALID and EQ-5D-5L-on measuring HRQOL in people with advanced dementia.

METHODS

In a sub-study nested within a cluster-RCT we collected proxy(nurse)-completed EQ-5D-5L and QUALID measures at baseline, 3, 6, 9 and 12 months' follow-up for people with advanced dementia, residing in 20 nursing homes across Australia. Spearman's rank correlations, partial correlations and linear regressions were used to assess the relationship between the HRQOL instrument scores and their changes over time.

RESULTS

The mean weight from 284 people for the EQ-5D-5L and QUALID at baseline were 0.004 (95% CI - 0.026, 0.033) and 24.98 (95% CI 24.13, 25.82), respectively. At 12 months' follow-up, 115 participants remained alive. EQ-5D-5L weights and QUALID scores at baseline and at follow-up were moderately correlated (r = - 0.437; p < 0.001 at 12 months). Changes within QUALID and EQ-5D-5L across the same follow-up periods were also correlated (r = - 0.266; p = 0.005). The regression analyses support these findings.

CONCLUSION

Whilst these quality of life instruments demonstrated moderate correlation, the EQ-5D-5L does not appear to capture all aspects of quality of life that are relevant to people with advanced dementia and we cannot recommend the use of this instrument for use within this population. The QUALID appears to be a more suitable instrument for measuring HRQOL in people with severe dementia, but is not preference-based, which limits its application in economic evaluations of dementia care.

Developing dementia: The existential experience of the quality of life with young-onset dementia – A longitudinal case study

Background

Cognition and the ability to take care of daily activities and oneself gradually declines among people with dementia. Studies are scarce, especially regarding how people with young-onset dementia (YOD) (<65 years) experience the quality of their lives with the progression of dementia. People with dementia living alone face special challenges.

Aim

To examine the experience of the quality of life with YOD as a single person.

Method

The study presents a longitudinal case study with in-depth interviews exploring the experiences of a person with YOD. Individual interviews were conducted seven times over a period of three years from 2014 to 2017.

Findings

We examined if and how seven themes concerning the quality of life and well-being were fruitful for understanding the experiences of dementia in the everyday life of a single individual. The study explored needs and challenges during the development of dementia, and how the person reacted over time, set in context. The themes significant for well-being are: identity, connectedness, security, autonomy, meaning, growth and joy.

Conclusion

The study shows how treatment, support, and services must be individualized when dementia develops in order to support identity, resources and mastering capacity, and promote well-being.

Estimating the monetary benefits of medicare eligibility for reducing the symptoms of dementia

We adopt a three-component method based on the idea of cost-saving for estimating the monetary benefits of Medicare eligibility for reducing dementia symptoms. The method involves Medicare eligibility lowering dementia symptoms, which reduces the need for dependent living, which in turn lowers caregiving costs. We use the Regression Discontinuity approach to establish a causal link between Medicare eligibility and dementia. The novel aspect of the study comes from using a quality-of-life proxy measure for the utility function to derive the marginal rate of substitution between dementia symptoms reduction and dependent living arrangements.

Patient- and Caregiver-Related Factors Associated with Caregiver Assessed Global Deterioration Scale Scoring in Demented Patients

Background

Informant-based rating scales are widely used in dementia but patients' and caregivers' features influence the final scoring. We aimed to evaluate the role of patient- and caregiver-related factors in a caregiver rated Global Deterioration Scale (GDS) score in a sample of Greek patients with dementia.

Methods

We included 194 patients with dementia and 194 caregivers/family relatives; Mini-Mental State Examination (MMSE); Neuropsychiatric Inventory (NPI); Katz Index of Activities of Daily Living (K-IADL) were administered to (a) patients and Center for Epidemiologic Studies-Depression (CES-D) Scale; Zarit Burden Interview (ZBI) to (b) caregivers. Participants' demographics and patients' and caregivers' characteristics were entered into a 3-block regression analysis.

Results

The final model explained 55% of the total variance of the caregiver assessed GDS score. The following variables significantly contributed to the final model: MMSE (β=-0.524); K-IADL (β=-0.264); ZBI (β=0.145).

Conclusion

We herein confirm the contribution of patients' cognitive and functional status and caregivers' burden in caregiver rated GDS scoring irrespective of demographic-related characteristics.

An empirical comparison of the measurement properties of the EQ-5D-5L, DEMQOL-U and DEMQOL-Proxy-U for older people in residential care

PURPOSE

This study aimed to empirically compare the measurement properties of self-reported and proxy-reported (in cases of severe cognitive impairment) generic (EQ-5D-5L) and condition-specific (DEMQOL-U and DEMQOL-Proxy-U) preference-based HRQoL instruments in residential care, where the population is characterised by older people with high rates of cognitive impairment, dementia and disability.

METHODS

Participants were recruited from seventeen residential care facilities across four Australian states. One hundred and forty-three participants self-completed the EQ-5D-5L and the DEMQOL-U while three hundred and eight-seven proxy completed (due to the presence of severe dementia) the EQ-5D-5L and DEMQOL-Proxy-U. The convergent validity of the outcome measures and known group validity relative to a series of clinical outcome measures were assessed.

RESULTS

Results satisfy convergent validity among the outcome measures. EQ-5D-5L and DEMQOL-U utilities were found to be significantly correlated with each other (p < 0.01) as were EQ-5D-5L and DEMQOL-Proxy-U utilities (p < 0.01). Both self-reported and proxy-reported EQ-5D-5L utilities demonstrated strong known group validity in relation to clinically recognised thresholds of cognition and physical functioning, while in contrast neither DEMQOL-U nor DEMQOL-Proxy-U demonstrated this association.

CONCLUSIONS

The findings suggest that the EQ-5D-5L, DEMQOL-U and DEMQOL-Proxy-U capture distinct aspects of HRQoL for this population. The measurement and valuation of HRQoL form an essential component of economic evaluation in residential care. However, high levels of cognitive impairment may preclude self-completion for a majority. Further research is needed to determine cognition thresholds beyond which an individual is unable to reliably self-report their own health-related quality of life.

Reliability and Validity Testing of the Quality of Life in Late-Stage Dementia Scale

BACKGROUND/RATIONALE

This study tested the psychometric properties of the Quality of Life in Late-Stage Dementia (QUALID) Scale using Rasch analysis. The QUALID includes 11 items with a 5-point response scale. Scores range from 11 to 55, and lower scores indicate higher quality of life (QoL).

METHODS

Baseline data from a randomized clinical trial including 137 residents from 14 nursing homes were used. Psychometric testing included item mapping, evaluation of response categories, item reliability, construct validity based on INFIT and OUTFIT statistics, and convergent validity based on correlations between QoL and pain, agitation, depression, and function.

RESULTS

The Cronbach α was .89. All the items except "appears physically uncomfortable" fit the model. There was a significant relationship between QoL and depressive symptoms ( r = .71, P = .001), pain ( r = .26, P = .01), physical function ( r = -.19, P = .03), and agitation ( r = .56, P = .001). The categories were appropriately used. Item mapping suggested a need for easier items.

Health economic evaluations of non-pharmacological interventions for persons with dementia and their informal caregivers: a systematic review

Background

This systematic review aims to review the literature on trial-based economic evaluations of non-pharmacological interventions directly targeted at persons with dementia as well as persons with mild cognitive impairment and their respective caregivers.

Methods

A systematic literature research was conducted for the timeframe from 2010 to 2016 in the following databases: Centre for Reviews and Dissemination, EconLit, Embase, Cochrane Library, PsycINFO and PubMed. Study quality was assessed according to the Drummond criteria.

Results

In total sixteen publications were identified. Health economic evaluations indicated the cost-effectiveness of physical exercise interventions and occupational therapy. There was also evidence to suggest that psychological and behavioral therapies are cost-effective. Health economic studies investigating psychosocial interventions mainly targeted towards informal caregivers showed inconsistent results.

Conclusions

Due to the increasing prevalence of dementia non-pharmacological interventions and their health economic impact are of increasing importance for health care decision-makers and HTA agencies.

Electronic supplementary material

The online version of this article (10.1186/s12877-018-0751-1) contains supplementary material, which is available to authorized users.

[Agreement in the responses to self-reported and proxy-reported versions of QOL-HC: a new quality-of-life scale for patients receiving home-based medical care]

AIM

We developed quality-of-life (QOL) scales for patients receiving home medical care. The objective of this study was to examine the agreement between the scores of the scales answered by patients and those answered by their proxy, as cognitive decline may interfere with one's ability to understand complex topics, such as the QOL.

METHODS

Participants were pairs of patients receiving home medical care and their proxy. The patients were asked to complete self-reported QOL scales (QOL-HC), and their proxies were asked to complete proxy-reported versions of the QOL scales (QOL-HC for caregivers). We then statistically examined the extent of agreement between the self- and proxy-reported QOL-HC scores using contingency tables and Spearman's rank correlation coefficient. The SPSS software program, version 24, was used for all statistical analyses.

RESULTS

The concordance rate between patients and caregivers for questions 1 ( "Do you have peace of mind?" ), 2 ( "Do you feel satisfied with your life when you reflect on it?" ), 3 ( "Do you have someone that you spend time talking with?" ), and 4 ( "Are you satisfied with the home care service system?" ) were 52.3%, 52.3%, 79.5%, and 81.8%, respectively. The total scores for the patients and caregivers were significantly correlated (Spearman's ρ=0.364*).

CONCLUSIONS

We created the first QOL scale for patients receiving home-based medical care and for caregivers. The findings of this study suggest that the QOL-HC can be used in clinical practice for the assessment of patients receiving professional home care.

How Different are Quality of Life Ratings for People with Dementia Reported by Their Family Caregivers from Those Reported by the Patients Themselves?

BACKGROUND

Measurements of patient quality of life (QoL) play a major role in the management of dementia.

OBJECTIVE

We investigated the self-proxy discrepancy of QoL ratings in the elderly and the impact of dementia severity on the discrepancy.

METHODS

QoL of 718 patients with dementia and 651 non-demented elderly were rated by themselves and their caregivers (CG) using the Quality of Life-Alzheimer's Disease (QoL-AD). The impact of the rater on the total and item scores of QoL-AD was analyzed using repeated measures ANOVA and differential response patterns between self and proxy were analyzed using differential item functioning (DIF) analysis.

RESULTS

Self-rated scores were higher than CG-rated scores in all diagnostic groups. The interaction between rater and diagnostic group was significant in total QoL-AD score and 5 item scores ('memory', 'marriage', 'chores around the house', 'do things for fun', and 'life as a whole'). The strength of the DIF increased with advancing dementia in these items.

CONCLUSION

Self-proxy rating discrepancy of QoL was influenced by the presence and severity of dementia only in five items.

Personally tailored activities for improving psychosocial outcomes for people with dementia in long-term care

BACKGROUND

People with dementia who are being cared for in long-term care settings are often not engaged in meaningful activities. Offering them activities which are tailored to their individual interests and preferences might improve their quality of life and reduce challenging behaviour.

OBJECTIVES

∙ To assess the effects of personally tailored activities on psychosocial outcomes for people with dementia living in long-term care facilities.∙ To describe the components of the interventions.∙ To describe conditions which enhance the effectiveness of personally tailored activities in this setting.

SEARCH METHODS

We searched ALOIS, the Cochrane Dementia and Cognitive Improvement Group's Specialized Register, on 16 June 2017 using the terms: personally tailored OR individualized OR individualised OR individual OR person-centred OR meaningful OR personhood OR involvement OR engagement OR engaging OR identity. We also performed additional searches in MEDLINE (Ovid SP), Embase (Ovid SP), PsycINFO (Ovid SP), CINAHL (EBSCOhost), Web of Science (ISI Web of Science), ClinicalTrials.gov, and the World Health Organization (WHO) ICTRP, to ensure that the search for the review was as up to date and as comprehensive as possible.

SELECTION CRITERIA

We included randomised controlled trials and controlled clinical trials offering personally tailored activities. All interventions included an assessment of the participants' present or past preferences for, or interests in, particular activities as a basis for an individual activity plan. Control groups received either usual care or an active control intervention.

DATA COLLECTION AND ANALYSIS

Two authors independently checked the articles for inclusion, extracted data and assessed the methodological quality of included studies. For all studies, we assessed the risk of selection bias, performance bias, attrition bias and detection bias. In case of missing information, we contacted the study authors.

MAIN RESULTS

We included eight studies with 957 participants. The mean age of participants in the studies ranged from 78 to 88 years and in seven studies the mean MMSE score was 12 or lower. Seven studies were randomised controlled trials (three individually randomised, parallel group studies, one individually randomised cross-over study and three cluster-randomised trials) and one study was a non-randomised clinical trial. Five studies included a control group receiving usual care, two studies an active control intervention (activities which were not personally tailored) and one study included both an active control and usual care. Personally tailored activities were mainly delivered directly to the participants; in one study the nursing staff were trained to deliver the activities. The selection of activities was based on different theoretical models but the activities did not vary substantially.We found low-quality evidence indicating that personally tailored activities may slightly improve challenging behaviour (standardised mean difference (SMD) -0.21, 95% confidence interval (CI) -0.49 to 0.08; I² = 50%; 6 studies; 439 participants). We also found low-quality evidence from one study that was not included in the meta-analysis, indicating that personally tailored activities may make little or no difference to general restlessness, aggression, uncooperative behaviour, very negative and negative verbal behaviour (180 participants). There was very little evidence related to our other primary outcome of quality of life, which was assessed in only one study. From this study, we found that quality of life rated by proxies was slightly worse in the group receiving personally tailored activities (moderate-quality evidence, mean difference (MD) -1.93, 95% CI -3.63 to -0.23; 139 participants). Self-rated quality of life was only available for a small number of participants, and there was little or no difference between personally tailored activities and usual care on this outcome (low-quality evidence, MD 0.26, 95% CI -3.04 to 3.56; 42 participants). We found low-quality evidence that personally tailored activities may make little or no difference to negative affect (SMD -0.02, 95% CI -0.19 to 0.14; I² = 0%; 6 studies; 589 participants). We found very low quality evidence and are therefore very uncertain whether personally tailored activities have any effect on positive affect (SMD 0.88, 95% CI 0.43 to 1.32; I² = 80%; 6 studies; 498 participants); or mood (SMD -0.02, 95% CI -0.27 to 0.23; I² = 0%; 3 studies; 247 participants). We were not able to undertake a meta-analysis for engagement and the sleep-related outcomes. We found very low quality evidence and are therefore very uncertain whether personally tailored activities improve engagement or sleep-related outcomes (176 and 139 participants, respectively). Two studies that investigated the duration of the effects of personally tailored activities indicated that the intervention effects persisted only during the delivery of the activities. Two studies reported information about adverse effects and no adverse effects were observed.

AUTHORS' CONCLUSIONS

Offering personally tailored activities to people with dementia in long-term care may slightly improve challenging behaviour. Evidence from one study suggested that it was probably associated with a slight reduction in the quality of life rated by proxies, but may have little or no effect on self-rated quality of life. We acknowledge concerns about the validity of proxy ratings of quality of life in severe dementia. Personally tailored activities may have little or no effect on negative affect and we are uncertain whether they improve positive affect or mood. There was no evidence that interventions were more likely to be effective if based on one specific theoretical model rather than another. Our findings leave us unable to make recommendations about specific activities or the frequency and duration of delivery. Further research should focus on methods for selecting appropriate and meaningful activities for people in different stages of dementia.

Measurement tools of resource use and quality of life in clinical trials for dementia or cognitive impairment interventions: A systematically conducted narrative review

OBJECTIVE

Knowledge is limited about the standardised instruments used to collect resource use and quality of life data alongside trials of dementia interventions. This review aimed to identify the trials using such instruments in order to guide the design of future trial-based cost-effectiveness studies.

METHODS

In accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Statement, this review examined all original, peer-reviewed research in major databases and general searches published until June 2017, including randomised clinical trials, pilot studies, or feasibility studies about interventions for older adults with dementia or cognitive impairment.

RESULTS

Forty-one studies were identified. Only 8 collected the resource use data using adapted Client Service Receipt Inventory (CSRI), Resource Use Inventory (RUI), cost diary, or study-specific questionnaire. Quality of life was assessed using a wide range of instruments. The most frequently used dementia-specific instrument was Quality of Life in Alzheimer's Disease (QOL-AD) and Dementia Quality of Life questionnaire (DEMQOL). Among the generic measures, EuroQol 5-dimentison (EQ-5D) was mostly used to collect health utility data, and Short Form surveys (SF-36 or SF-12) were widely to measure general health.

CONCLUSIONS

Several useful resource use and quality of life measurement instruments have been identified by this review. For resource use, CSRI was mostly used, but no studies have used Resource Utilisation in Dementia (RUD); for quality of life, we recommend the inclusion of dementia-specific DEMQOL, generic SF-12, and health utility EQ-5D-5L, based on both self-report and proxy-report.

A Computer-Assisted Personal Interview App in Research Electronic Data Capture for Administering Time Trade-off Surveys (REDCap): Development and Pretest

Background

The time trade-off (TTO) task is a method of eliciting health utility scores, which range from 0 (equivalent to death) to 1 (equivalent to perfect health). These scores numerically represent a person’s health-related quality of life. Software apps exist to administer the TTO task; however, most of these apps are poorly documented and unavailable to researchers.

Objective

To fill the void, we developed an online app to administer the TTO task for a research study that is examining general public proxy health-related quality of life estimates for persons with Alzheimer’s disease. This manuscript describes the development and pretest of the app.

Methods

We used Research Electronic Data Capture (REDCap) to build the TTO app. The app’s modular structure and REDCap’s object-oriented environment facilitated development. After the TTO app was built, we recruited a purposive sample of 11 members of the general public to pretest its functionality and ease of use.

Results

Feedback from the pretest group was positive. Minor modifications included clarity enhancements, such as rearranging some paragraph text into bullet points, labeling the app to delineate different question sections, and revising or deleting text. We also added a research question to enable the identification of respondents who know someone with Alzheimer’s disease.

Conclusions

We developed an online app to administer the TTO task. Other researchers may access and customize the app for their own research purposes.

Development of the PHASE-Proxy scale for rating drug-related signs and symptoms in severe cognitive impairment

OBJECTIVES

The need for assessment of possible drug-related signs and symptoms in older people with severe cognitive impairment has increased. In 2009, the PHASE-20 rating scale for identifying symptoms possibly related to medication was the first such scale to be found valid and reliable for use with elderly people. In this project, the aim was to develop and examine the psychometric properties and clinical utility of PHASE-Proxy, a similar scale for proxy use in assessing elderly people with cognitive impairment.

METHODS

Three expert groups revised PHASE-20 into a preliminary proxy version, which was then tested for inter-rater reliability, internal consistency, and content validity. Its clinical usefulness was investigated by pharmacist-led medication reviews. Group interviews and a study-specific questionnaire with nursing home staff were used to investigate the feasibility of use.

RESULTS

The PHASE-Proxy scale had satisfactory levels of inter-rater reliability (Spearman's rank correlation coefficient; r_s = 0.8), and acceptable internal consistency (Cronbach's alpha coefficient; α = 0.73). The factor analysis resulted in a logical solution with seven factors, grouped into two dimensions: signs of emotional distress and signs of physical discomfort. The medication reviews, interviews, and questionnaires also found the proxy scale to be clinically useful, and feasible to use.

CONCLUSION

The PHASE-Proxy scale appears to be a valid instrument that enables proxies to reliably assess nursing home residents who cannot participate in the assessment, to identify possible drug-related signs and symptoms. It also appears to be clinically useful and feasible for use in this population.

The relation between mood, activity, and interaction in long-term dementia care

OBJECTIVE

The aim of the study is to identify the degree of association between mood, activity engagement, activity location, and social interaction during everyday life of people with dementia (PwD) living in long-term care facilities.

METHOD

An observational study using momentary assessments was conducted. For all 115 participants, 84 momentary assessments of mood, engagement in activity, location during activity, and social interaction were carried out by a researcher using the tablet-based Maastricht Electronic Daily Life Observation-tool.

RESULTS

A total of 9660 momentary assessments were completed. The mean age of the 115 participants was 84 and most (75%) were women. A negative, neutral, or positive mood was recorded during 2%, 25%, and 73% of the observations, respectively. Positive mood was associated with engagement in activities, doing activities outside, and social interaction. The type of activity was less important for mood than the fact that PwD were engaged in an activity. Low mood was evident when PwD attempted to have social interaction but received no response.

CONCLUSION

Fulfilling PwD's need for occupation and social interaction is consistent with a person-centred dementia care focus and should have priority in dementia care.