Patient and proxy measurement of quality of life among general hospital in-patients with dementia

A national survey on health-related quality of life for people with dementia in residential long-term care institutions

BACKGROUND

Health-related quality of life (HRQoL) is an essential outcome parameter in geriatric research; however, the available evidence is mixed regarding the factors associated with HRQoL among people with dementia. We aimed to identify factors that contribute to HRQoL among people with dementia in residential long-term care (LTC) institutions.

METHODS

We randomly selected 299 of 1607 registered residential LTC institutions in Taiwan. A cross-sectional survey was conducted between 2019 and 2020, including items on demographic characteristics, comorbidities, the EuroQol-5 dimensions-5 levels (EQ-5D-5L; utility and visual analog scale [VAS] scores), the Mini-Mental State Examination (MMSE), the Clinical Dementia Rating (CDR), behavioral and psychological symptoms of dementia, activities of daily living (ADL), and instrumental ADL (IADL).

RESULTS

In total, 1313 people with dementia from 267 institutions were enrolled (mean age, 76.4 ± 12.7 years). The mean EQ-5D-5L utility and VAS scores were 0.10 (standard deviation [SD] = 0.48) and 66.57 (SD = 20.67), respectively. In multivariate linear regression analysis, higher scores for ADL, IADL, and CDR sum of boxes were associated with higher utility scores. Higher VAS scores were associated with higher ADL and MMSE scores. Lower utility scores and VAS scores were associated with more frequent depressive symptoms.

CONCLUSION

ADL, dementia severity, cognitive function, and depressive symptoms influenced the HRQoL of people with dementia in residential LTC institutions. Longitudinal studies should be conducted to better understand how HRQoL changes over time among people with disabilities.

Self-report instruments measuring aspects of self for people living with dementia: A systematic literature review of psychosocial interventions

OBJECTIVE

A positive sense of self may be a key domain of psychological well-being for people living with dementia and therefore a legitimate target for psychosocial interventions in dementia care. Determining the effectiveness of such interventions often requires valid self-report instruments. This review aimed to investigate what aspects of self have been measured using self-report instruments in evaluating psychosocial interventions for people living with dementia and to explore the effectiveness of these interventions in terms of positive outcomes related to aspects of self.

METHOD

A systematic search of the literature using five electronic databases and one register (CENTRAL) was conducted. A narrative synthesis and methodological quality assessment was completed for the included studies.

RESULTS

A total of 24 studies were included in the review. Seven aspects of self were measured using a range of self-report instruments, many of which have not been validated for dementia. Aspects of self were; self-esteem, self-efficacy, self-compassion, self-growth, self-acceptance, self-management, and self-identity. Studies included a variety of interventions; however, the effectiveness of these interventions for these aspects of self was mixed.

CONCLUSION

There is some evidence that psychosocial interventions improve specific aspects of self in dementia but further research to improve this evidence base is needed. Future research should also investigate and confirm the validity and reliability of existing self-report instruments that aim to measure aspects of self in dementia. Limitations and implications of the review are discussed.

People Diagnosed with Myasthenia Gravis have Lower health-related quality of life and Need More Medical and Caregiver Help in Comparison to the General Population: Analysis of Two Observational Studies

INTRODUCTION

Myasthenia gravis (MG) is a neuromuscular disease causing extreme muscular fatigue, triggering problems with vision, swallowing, speech, mobility, dexterity, and breathing. This analysis intended to estimate the health-related quality-of-life impact, the medical burden, and the need for caregiver help of people diagnosed with MG.

METHODS

MyRealWorld-MG (MRW) is an observational study among adults diagnosed with MG in 9 countries. The General Population Norms (POPUP) observational study enrolled representative members of the general population in 8 countries. In both digital studies, respondents entered personal characteristics and provided data on medical conditions, EQ-5D-5L, HUI3, MG-Activities of Daily Living (MG-ADL), sick leave, caregiver help, and medical care utilization.

RESULTS

In MRW (n = 1859), 58.4% of respondents had moderate-to-severe MG. Average utility values were lower in MRW versus POPUP (0.739 vs. 0.843 for EQ-5D-5L; 0.493 vs. 0.746 for HUI3), and declined with more severe disease (0.872, 0.707, 0.511 EQ-5D-5L utilities and 0.695, 0.443, 0.168 HUI3 utilities for mild, moderate, and severe MG, respectively). Taking sick leave in the past month was 2.6 times more frequent among people diagnosed with MG compared to the general population (34.4% vs. 13.2%) and four times more people diagnosed with MG reported needing help from a caregiver (34.8% vs. 8.3%). Use of medical care was twice as likely in MRW in comparison with POPUP (51.9% vs. 24.6%).

CONCLUSION

This direct comparison of people diagnosed with MG and the general population using two large international studies revealed significant negative impact of MG. Results were consistent across all outcomes, in all countries.

Neurological Health: Not Merely the Absence of Disease: Current Wellbeing Instruments Across the Spectrum of Neurology

OBJECTIVE

Well-being and quality of life can vary independently of disease. Instruments measuring well-being and quality of life are commonly used in neurology, but there has been little investigation into the extent in which they accurately measure wellbeing/quality of life or if they merely reflect a diseased state of an individual.

DESIGN

Systematic searches, thematic analysis and narrative synthesis were undertaken. Individual items from instruments represented in ≥ 5 publications were categorised independently, without prior training, by five neurologists and one well-being researcher, as relating to 'disease-effect' or 'Well-being' with a study-created instrument. Items were additionally categorised into well-being domains.

DATA SOURCES

MEDLINE, EMBASE, EMCARE and PsycINFO from 1990 to 2020 were performed, across the 13 most prevalent neurological diseases.

RESULTS

301 unique instruments were identified. Multiple sclerosis had most unique instruments at 92. SF-36 was used most, in 66 studies. 22 instruments appeared in ≥ 5 publications: 19/22 'well-being' outcome instruments predominantly measured disease effect (Fleiss kappa = .60). Only 1/22 instruments was categorised unanimously as relating to well-being. Instruments predominantly measured mental, physical and activity domains, over social or spiritual.

CONCLUSIONS

Most neurological well-being or quality-of-life instruments predominantly measure disease effect, rather than disease-independent well-being. Instruments differed widely in well-being domains examined.

Convergent validity of EQ-5D with core outcomes in dementia: a systematic review

Objectives

To explore through a systematic review, the convergent validity of EQ-5D (EQ-5D-3L and EQ-5D-5L (total score and dimensions)) with core outcomes in dementia and investigate how this may be impacted by rater-type; with the aim of informing researchers when choosing measures to use in dementia trials.

Methods

To identify articles relevant to the convergent validity of EQ-5D with core dementia outcomes, three databases were electronically searched to September 2022. Studies were considered eligible for inclusion within the review if they included individual level data from people with dementia of any type, collected self and/or proxy reported EQ-5D and collected at least one core dementia outcome measure. Relevant data such as study sample size, stage of dementia and administration of EQ-5D was extracted, and a narrative synthesis was adopted.

Results

The search strategy retrieved 271 unique records, of which 30 met the inclusion criteria for the review. Twelve different core outcome measures were used to capture dementia outcomes: cognition, function, and behaviour/mood across the studies. Most studies used EQ-5D-3L (n = 27). Evidence related to the relationship between EQ-5D and measures of function and behaviour/mood was the most robust, with unanimous directions of associations, and more statistically significant findings. EQ-5D dimensions exhibited associations with corresponding clinical outcomes, whereby relationships were stronger with proxy-EQ-5D (than self-report).

Conclusion

Measuring health-rated quality of life in dementia populations is a complex issue, particularly when considering balancing the challenges associated with both self and proxy report. Published evidence indicates that EQ-5D shows evidence of convergent validity with the key dementia outcomes, therefore capturing these relevant dementia outcomes. The degree of associations with clinical measures was stronger when considering proxy-reported EQ-5D and differed by EQ-5D dimension type. This review has revealed that, despite the limited targeted psychometric evidence pool and reliance on clinical and observational studies, EQ-5D exhibits convergent validity with other dementia outcome measures.

Assessing the psychometric performance of EQ-5D-5L in dementia: a systematic review

BACKGROUND

EQ-5D is widely used for valuing changes in quality of life for economic evaluation of interventions for people with dementia. There are concerns about EQ-5D-3L in terms of content validity, poor inter-rater agreement and reliability in the presence of cognitive impairment, but there is also evidence to support its use with this population. An evidence gap remains regarding the psychometric properties of EQ-5D-5L.

OBJECTIVES

To report psychometric evidence around EQ-5D-5L in people with dementia.

METHODS

A systematic review identified primary studies reporting psychometric properties of EQ-5D-5L in people with dementia. Searches were completed up to November 2020. Study selection, data extraction and quality assessment were undertaken independently by at least 2 researchers.

RESULTS

Evidence was extracted from 20 articles from 14 unique studies covering a range of dementia severity. Evidence of known group validity from 5 of 7 studies indicated that EQ-5D-5L distinguishes severity of disease measured by cognitive impairment, depression, level of dependence and pain. Convergent validity (9 studies) showed statistically significant correlations of weak and moderate strengths, between EQ-5D-5L scores and scores on other key measures. Statistically significant change was observed in only one of 6 papers that allowed this property to be examined. All seven studies showed a lack of inter-rater reliability between self and proxy reports with the former reporting higher EQ-5D-5L scores than those provided by proxies. Five of ten studies found EQ-5D-5L to be acceptable, assessed by whether the measure could be completed by the PwD and/or by the amount of missing data. As dementia severity increased, the feasibility of self-completing EQ-5D-5L decreased. Three papers reported on ceiling effects, two found some evidence in support of ceiling effects, and one did not.

CONCLUSIONS

EQ-5D-5L seems to capture the health of people with dementia on the basis of known-group validity and convergent validity, but evidence is inconclusive regarding the responsiveness of EQ-5D-5L. As disease progresses, the ability to self-complete EQ-5D-5L is diminished.

A systematic review and recommendations for prom instruments for older people with frailty in emergency care

Introduction

The current service metrics used to evaluate quality in emergency care do not account for specific healthcare outcome goals for older people living with frailty. These have previously been classified under themes of ‘Autonomy’ and ‘Functioning’. There is no person-reported outcome measure (PROM) for older people with frailty and emergency care needs. This study aimed to identify and co-produce recommendations for instruments potentially suitable for use in this population.

Methods

In this systematic review, we searched six databases for PROMs used between 2010 and 2021 by older people living with frailty receiving acute hospital care. Studies were reviewed against predefined eligibility criteria and appraised for quality using the COSMIN Risk of Bias checklist. Data were extracted to map instrument constructs against an existing framework of acute healthcare outcome goals. Instrument face and content validity were assessed by lay collaborators. Recommendations for instruments with potential emergency care suitability were formed through co-production.

Results

Of 9392 unique citations screened, we appraised the full texts of 158 studies. Nine studies were identified, evaluating nine PROMs. Quality of included studies ranged from ‘doubtful’ to ‘very good’. Most instruments had strong evidence for measurement properties. PROMs mainly assessed ‘Functioning’ constructs, with limited coverage of ‘Autonomy’. Five instruments were considered too burdensome for the emergency care setting or too specific for older people living with frailty.

Conclusions

Four PROMs were recommended as potentially suitable for further validation with older people with frailty and emergency care needs: COOP/WONCA charts, EuroQol, McGill Quality of Life (Expanded), and Palliative care Outcome Scale.

Supplementary Information

The online version contains supplementary material available at 10.1186/s41687-022-00438-x.

Proxy responses regarding quality of life of patients with terminal lung cancer: preliminary results from a prospective observational study

OBJECTIVE

This prospective study used the EQ-5D utility and Visual Analogue Scale (VAS) scores to analyse the potential usefulness of proxy responses in quality of life assessments of Japanese patients with terminal lung cancer sufficiently healthy to communicate and reply by themselves. We did not investigate the potential usefulness of using proxy responses for patients who could not respond by themselves.

DESIGN

A prospective observational study.

SETTING

Single centre.

PARTICIPANTS

The EQ-5D and VAS responses were gathered from 30 in-hospital patients with lung cancer for a total of three observation points. At nearly the same time, two nurses responded by providing proxy responses.

PRIMARY AND SECONDARY OUTCOME MEASURES

EQ-5D and VAS responses.

RESULTS

There were no significant differences between the patients' and nurses' responses for EQ-5D utility and VAS scores. For the five dimensions of the EQ-5D, significant differences were found between the patients' and nurses' responses for usual activities (patients' response 1.64±0.07, nurses' response 1.41±0.05, p=0.03) and anxiety/depression (patients' response: 1.40±0.05, nurses' response: 1.19±0.03, p=0.02). There was a significant weak positive correlation between patients' and nurses' responses regarding changes in responses from the first to the third observation point (Spearman's rank correlation coefficient ρ=0.228; p<0.01).

CONCLUSION

The results suggest that proxy responses are useful because there were no significant differences between the patients' and nurses' responses for EQ-5D utility and VAS scores at the three observation points. These findings should, however, be verified in future large-scale trials.

Strategies to enhance routine physical activity in care home residents: the REACH research programme including a cluster feasibility RCT

Background

Care home residents are mainly inactive, leading to increased dependency and low mood. Although exercise classes may increase activity, a more sustainable model is to engage staff and residents in increasing routine activity.

Objectives

The objectives were to develop and preliminarily test strategies to enhance the routine physical activity of care home residents to improve their physical, psychological and social well-being through five overlapping workstreams.

Design

This trial had a mixed-methods research design to develop and test the feasibility of undertaking an evaluative study consisting of gaining an understanding of the opportunities for and barriers to enhancing physical activity in care homes (workstream 1); testing physical activity assessment instruments (workstream 2); developing an intervention through a process of intervention mapping (workstream 3); refining the provisional intervention in the care home setting and clarifying outcome measurement (workstream 4); and undertaking a cluster randomised feasibility trial of the intervention [introduced via three facilitated workshops at baseline (with physiotherapist input), 2 weeks (with artist input) and 2 months], with embedded process and health economic evaluations (workstream 5).

Setting

The trial was set in 12 residential care homes differing in size, location, ownership and provision in Yorkshire, UK.

Participants

The participants were elderly residents, carers, managers and staff of care homes.

Intervention

The intervention was MoveMore, designed for the whole home, to encourage and support the movement of residents in their daily routines.

Main outcome measures

The main outcome measures related to the feasibility and acceptability of implementing a full-scale trial in terms of recruitment and retention of care homes and residents, intervention delivery, completion and reporting of baseline data and outcomes (including hours of accelerometer wear, hours of sedentary behaviour and hours and type of physical activity), and safety and cost data (workstream 5).

Results

Workstream 1 – through a detailed understanding of life in a care home, a needs assessment was produced, and barriers to and facilitators of activity were identified. Key factors included ethos of care; organisation, management and delivery of care; use of space; and the residents’ daily routines. Workstream 2 – 22 (73.3%) out of 30 residents who wore a hip accelerometer had valid data (≥ 8 hours on ≥ 4 days of the week). Workstream 3 – practical mechanisms for increasing physical activity were developed, informed by an advisory group of stakeholders and outputs from workstreams 1 and 2, framed by the process of intervention mapping. Workstream 4 – action groups were convened in four care homes to refine the intervention, leading to further development of implementation strategies. The intervention, MoveMore, is a whole-home intervention involving engagement with a stakeholder group to implement a cyclical process of change to encourage and support the movement of residents in their daily routines. Workstream 5 – 12 care homes and 153 residents were recruited to the cluster randomised feasibility trial. Recruitment in the care homes varied (40–89%). Five care homes were randomised to the intervention and seven were randomised to usual care. Predetermined progression criteria were recruitment of care homes and residents (green); intervention delivery (amber); and data collection and follow-up – 52% of residents provided usable accelerometer data at 9 months (red), > 75% of residents had reported outcomes at 9 months (green, but self-reported resident outcomes were red), 26% loss of residents to follow-up at 9 months [just missing green criterion (no greater than 25%)] and safety concerns (green).

Limitations

Observations of residents’ movements were not conducted in private spaces. Working with care home residents to identify appropriate outcome measures was challenging. Take-up of the intervention was suboptimal in some sites. It was not possible to make a reliably informed decision on the most appropriate physical activity end point(s) for future use in a definitive trial.

Conclusions

A whole-home intervention was developed that was owned and delivered by staff and was informed by residents and staff. The feasibility of conducting a cluster randomised controlled trial was successfully tested: the target numbers of care homes and residents were recruited, demonstrating that it is possible to recruit care home residents to a cluster randomised trial, although this process was time-consuming and resource heavy. A large data set was collected, which provided a comprehensive picture of the environment, residents and staff in care homes. Extensive quantitative and qualitative work comprehensively explored a neglected area of health and social care research. Completion of ethnographic work in a range of settings enabled the production of an in-depth picture of life in care homes that will be helpful for other researchers considering organisational change in this setting.

Future work

The content and delivery of the intervention requires optimisation and the outcome measurement requires further refinement prior to undertaking a full trial evaluation. Consideration could be given to a recommended, simplified, core outcome set, which would facilitate data collection in this population.

Trial registration

Current Controlled Trials ISRCTN16076575.

Funding

This project was funded by the National Institute for Health Research (NIHR) Programme Grant for Applied Research programme and will be published in full in Programme Grant for Applied Research; Vol. 9, No. 9. See the NIHR Journals Library website for further project information.

Obtaining EQ-5D-5L utilities from the disease specific quality of life Alzheimer's disease scale: development and results from a mapping study

PURPOSE

The Quality of Life Alzheimer's Disease Scale (QoL-AD) is commonly used to assess disease specific health-related quality of life (HRQoL) as rated by patients and their carers. For cost-effectiveness analyses, utilities based on the EQ-5D are often required. We report a new mapping algorithm to obtain EQ-5D indices when only QoL-AD data are available.

METHODS

Different statistical models to estimate utility directly, or responses to individual EQ-5D questions (response mapping) from QoL-AD, were trialled for patient-rated and proxy-rated questionnaires. Model performance was assessed by root mean square error and mean absolute error.

RESULTS

The response model using multinomial regression including age and sex, performed best in both the estimation dataset and an independent dataset.

CONCLUSIONS

The recommended mapping algorithm allows researchers for the first time to estimate EQ-5D values from QoL-AD data, enabling cost-utility analyses using datasets where the QoL-AD but no utility measures were collected.

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.

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.

Validation of the Cohen-Mansfield Agitation Inventory Observational (CMAI-O) tool

OBJECTIVES

Behaviours associated with agitation are common in people living with dementia. The Cohen-Mansfield Agitation Inventory (CMAI) is a 29-item scale widely used to assess agitation completed by a proxy (family carer or staff member). However, proxy informants introduce possible reporting bias when blinding to the treatment arm is not possible, and potential accuracy issues due to irregular contact between the proxy and the person with dementia over the reporting period. An observational measure completed by a blinded researcher may address these issues, but no agitation measures with comparable items exist.

DESIGN

Development and validation of an observational version of the CMAI (CMAI-O), to assess its validity as an alternative or complementary measure of agitation.

SETTING

Fifty care homes in England.

PARTICIPANTS

Residents (N = 726) with dementia.

MEASUREMENTS

Two observational measures (CMAI-O and PAS) were completed by an independent researcher. Measures of agitation, functional status, and neuropsychiatric symptoms were completed with staff proxies.

RESULTS

The CMAI-O showed adequate internal consistency (α = .61), criterion validity with the PAS (r = .79, p = < .001), incremental validity in predicting quality of life beyond the Functional Assessment Staging of Alzheimer's disease (β = 1.83, p < .001 at baseline) and discriminant validity from the Neuropsychiatric Inventory Apathy subscale (r = .004, p = .902).

CONCLUSIONS

The CMAI-O is a promising research tool for independently measuring agitation in people with dementia in care homes. Its use alongside the CMAI could provide a more robust understanding of agitation amongst residents with dementia.

Exploring self-report and proxy-report quality-of-life measures for people living with dementia in care homes

Purpose

There are many validated quality-of-life (QoL) measures designed for people living with dementia. However, the majority of these are completed via proxy-report, despite indications from community-based studies that consistency between proxy-reporting and self-reporting is limited. The aim of this study was to understand the relationship between self- and proxy-reporting of one generic and three disease-specific quality-of-life measures in people living with dementia in care home settings.

Methods

As part of a randomised controlled trial, four quality-of-life measures (DEMQOL, EQ-5D-5L, QOL-AD and QUALID) were completed by people living with dementia, their friends or relatives or care staff proxies. Data were collected from 726 people living with dementia living in 50 care homes within England. Analyses were conducted to establish the internal consistency of each measure, and inter-rater reliability and correlation between the measures.

Results

Residents rated their quality of life higher than both relatives and staff on the EQ-5D-5L. The magnitude of correlations varied greatly, with the strongest correlations between EQ-5D-5L relative proxy and staff proxy. Internal consistency varied greatly between measures, although they seemed to be stable across types of participants. There was poor-to-fair inter-rater reliability on all measures between the different raters.

Discussion

There are large differences in how QoL is rated by people living with dementia, their relatives and care staff. These inconsistencies need to be considered when selecting measures and reporters within dementia research.

The relationship between perceived functional difficulties and the ability to live well with mild-to-moderate dementia: Findings from the IDEAL programme

OBJECTIVES

The objectives of the study are to investigate how different levels of functional ability relate to quality of life, well-being, and satisfaction with life, conceptualised as reflecting capability to "live well" in people with dementia.

METHODS/DESIGN

Participants were 1496 people with mild-to-moderate dementia and 1188 informants who completed baseline assessments in the Improving the experience of Dementia and Enhancing Active Life (IDEAL) cohort study. Total self-rated and informant-rated scores on the Functional Activities Questionnaire were split into six ability levels to monitor how poorer functioning impacts the ability to live well. We also investigated the potential influence of sociodemographic and diagnostic variables, depression, cognition, and carer stress.

RESULTS

Multivariate multiple regression models found that people with dementia who had the greatest functional impairment according to self-ratings and informant ratings had poorer living well scores than those with the least functional impairment. Sociodemographic and diagnostic factors and cognition had little impact on effect sizes. For self-ratings, depression attenuated the relationship between functional ability and living well, whereas carer stress attenuated informant ratings.

CONCLUSIONS

People with dementia with the least functional impairments had greater capability to live well than those with the most functional impairment. Even subtle perceived difficulties in functional ability had a detrimental effect on the ability of people with dementia to live well. Depression in people with dementia and carer stress in informants influenced these associations, and therefore, these factors should be routinely included in future research studies and clinical assessments.

Measuring health-related quality of life of care home residents: comparison of self-report with staff proxy responses

Introduction

care home residents are often unable to complete health-related quality of life questionnaires for themselves because of prevalent cognitive impairment. This study compared care home resident and staff proxy responses for two measures, the EQ-5D-5L and HowRU.

Methods

a prospective cohort study recruited residents ≥60 years across 24 care homes who were not receiving short stay, respite or terminal care. Resident and staff proxy EQ-5D-5L and HowRu responses were collected monthly for 3 months. Weighted kappa statistics and intra-class correlation coefficients (ICCs) adjusted for clustering at the care home level were used to measure agreement between resident and proxies for each time point. The effect of staff and resident baseline variables on agreement was considered using a multilevel mixed effect regression model.

Results

117, 109 and 104 matched pairs completed the questionnaires at 1, 2 and 3 months, respectively. When clustering was controlled for, agreement between resident and staff proxy EQ-5D-5L responses was fair for mobility (ICC: 0.29) and slight for all other domains (ICC ≤ 0.20). EQ-5D Index and Quality-Adjusted Life Year scores (proxy scores higher than residents) showed better agreement than EQ-5D-VAS (residents scores higher than proxy). HowRU showed only slight agreement (ICC ≤ 0.20) between residents and proxies. Staff and resident characteristics did not influence level of agreement for either index.

Discussion

the levels of agreement for EQ-5D-5L and HowRU raise questions about their validity in this population.

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.

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.

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.

Decision modelling of non-pharmacological interventions for individuals with dementia: a systematic review of methodologies

OBJECTIVES

The main objective of this study is to conduct a systematic review to identify and discuss methodological issues surrounding decision modelling for economic evaluation of non-pharmacological interventions (NPIs) in dementia.

METHODS

A systematic search was conducted for publications using decision modelling to investigate the cost-effectiveness of NPIs for individuals with dementia. Search was limited to studies in English. Studies were excluded if they evaluated interventions aimed only at caregivers of patients with dementia, or if they only included economic evaluation alongside an RCT without additional modelling.

RESULTS

Two primary, five secondary and three tertiary prevention intervention studies were identified and reviewed. Five studies utilised Markov models, with others using discrete event, regression-based simulation, and decision tree approaches. A number of challenging methodological issues were identified, including the use of MMSE-score as the main outcome measure, limited number of strategies compared, restricted time horizons, and limited or dated data on dementia onset, progression and mortality. Only one of the three tertiary prevention studies explicitly considered the effectiveness of pharmacological therapies alongside their intervention.

CONCLUSIONS

Economic evaluations of NPIs in dementia should utilise purposefully-developed decision models, and avoid models for evaluation of pharmaceuticals. Broader outcome measures could be a way to capture the wide impact of NPIs for dementia in future decision models. It is also important to account for the effects of pharmacological therapies alongside the NPIs in economic evaluations. Access to more localised and up-to-date data on dementia onset, progression and mortality is a priority for accurate prediction.

[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.

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.

Mindfulness-Based Cognitive Therapy (MBCT) programme for depression in people with early stages of dementia: study protocol for a randomised controlled feasibility study

Background

Depression and dementia are major public health problems in the UK. Depression in early-stage dementia is very common and significantly reduces quality of life, speeds cognitive decline and increases functional impairment. Mindfulness-Based Cognitive Therapy (MBCT) is an effective depression prevention programme, and the National Institute for Clinical Excellence (NICE) has suggested that MBCT is a priority for implementation. Alongside this, there is emerging evidence demonstrating promising results in relation to the benefits of adapted mindfulness interventions for people with dementia, suggesting that it could be beneficial in reducing depressive symptoms and in slowing deterioration in cognitive functions such as sustained attention, distraction inhibition and task switching.

Methods

The design is a single-blind randomised controlled feasibility trial. Participants with mild to moderate depression and early stages of dementia will be recruited from the participating memory services. Participants will receive either immediate or delayed access to an 8-week MBCT programme. Participants will be assessed by a blind assessor and complete cognitive and mood-related outcome measures before and after the intervention. This feasibility study will test the trial design and assess recruitment, retention, acceptability and adherence, as well as providing preliminary efficacy data.

Discussion

This study will inform the design and sample size for a future full randomised controlled trial (RCT), which will be carried out to determine the effectiveness of the intervention in reducing depressive symptoms in people with early stages of dementia.

Trial registration

ClinicalTrials.gov ISRCTN16382776

Developing a proxy version of the Adult social care outcome toolkit (ASCOT)

BACKGROUND

Social care-related quality of life is a key outcome indicator used in the evaluation of social care interventions and policy. It is not, however, always possible to collect quality of life data by self-report even with adaptations for people with cognitive or communication impairments. A new proxy-report version of the Adult Social Care Outcomes Toolkit (ASCOT) measure of social care-related quality of life was developed to address the issues of wider inclusion of people with cognitive or communication difficulties who may otherwise be systematically excluded. The development of the proxy-report ASCOT questionnaire was informed by literature review and earlier work that identified the key issues and challenges associated with proxy-reported outcomes.

METHODS

To evaluate the acceptability and content validity of the ASCOT-Proxy, qualitative cognitive interviews were conducted with unpaid carers or care workers of people with cognitive or communication impairments. The proxy respondents were invited to 'think aloud' while completing the questionnaire. Follow-up probes were asked to elicit further detail of the respondent's comprehension of the format, layout and content of each item and also how they weighed up the options to formulate a response.

RESULTS

A total of 25 unpaid carers and care workers participated in three iterative rounds of cognitive interviews. The findings indicate that the items were well-understood and the concepts were consistent with the item definitions for the standard self-completion version of ASCOT with minor modifications to the draft ASCOT-Proxy. The ASCOT-Proxy allows respondents to rate the proxy-proxy and proxy-patient perspectives, which improved the acceptability of proxy report.

CONCLUSIONS

A new proxy-report version of ASCOT was developed with evidence of its qualitative content validity and acceptability. The ASCOT-Proxy is ready for empirical testing of its suitability for data collection as a self-completion and/or interview questionnaire, and also evaluation of its psychometric properties.

Where's the evidence? a systematic review of economic analyses of residential aged care infrastructure

BACKGROUND

Residential care infrastructure, in terms of the characteristics of the organisation (such as proprietary status, size, and location) and the physical environment, have been found to directly influence resident outcomes. This review aimed to summarise the existing literature of economic evaluations of residential care infrastructure.

METHODS

A systematic review of English language articles using AgeLine, CINAHL, Econlit, Informit (databases in Health; Business and Law; Social Sciences), Medline, ProQuest, Scopus, and Web of Science with retrieval up to 14 December 2015. The search strategy combined terms relating to nursing homes, economics, and older people. Full economic evaluations, partial economic evaluations, and randomised trials reporting more limited economic information, such as estimates of resource use or costs of interventions were included. Data was extracted using predefined data fields and synthesized in a narrative summary to address the stated review objective.

RESULTS

Fourteen studies containing an economic component were identified. None of the identified studies attempted to systematically link costs and outcomes in the form of a cost-benefit, cost-effectiveness, or cost-utility analysis. There was a wide variation in approaches taken for valuing the outcomes associated with differential residential care infrastructures: 8 studies utilized various clinical outcomes as proxies for the quality of care provided, and 2 focused on resident outcomes including agitation, quality of life, and the quality of care interactions. Only 2 studies included residents living with dementia.

CONCLUSIONS

Robust economic evidence is needed to inform aged care facility design. Future research should focus on identifying appropriate and meaningful outcome measures that can be used at a service planning level, as well as the broader health benefits and cost-saving potential of different organisational and environmental characteristics in residential care.

TRIAL REGISTRATION

International Prospective Register of Systematic Reviews (PROSPERO) registration number CRD42015015977 .

Challenges and opportunities in understanding dementia and delirium in the acute hospital

In an Essay, Andrew Jackson and colleagues discuss challenges in the diagnosis and management of older people with dementia and delirium in acute hospitals.

The mediating role of depression in the association between disability and quality of life in Alzheimer's disease

BACKGROUND

An understanding of the determinants of quality of life in Alzheimer's disease (AD) is required in order to develop effective interventions to promote patients' well-being. Most studies have pointed out depression, functional ability and environmental factors. However, unmeasured confounders can jeopardize the interpretation of the results.

OBJECTIVES

To explore the mediating role of depression in the association between functional status and QoL, and establish a procedure to detect confounding variables.

METHODS

A sample of 192 AD patients and their respective caregivers were recruited from day centers and health care centers in the region of Murcia (Spain). The mediating effect was evaluated using causal mediation analysis. Covariates were introduced into the model in a stepwise fashion and sensitivity analyses were performed to assess the influence of potential confounders.

RESULTS

Self-rated depression acted as a partial mediator between functional status and quality of life. The mediating effect was positive and significant even after including both patient- and caregiver-related covariates. Only if confounders explained more than 80% of the residual variance in the mediator or in the outcome, the mediating effects would not be positive.

CONCLUSIONS

The effect of lack of autonomy on the QoL is mostly explained by the negative consequences on mood status. The sensitivity analysis confirms the robustness of this finding.

Health-Related Quality of Life in Patients with Alzheimer's Disease in Different German Health Care Settings

The purpose of this study is to evaluate the health-related quality of life (HrQoL) of patients with Alzheimer's disease (AD) in different care settings (institutionalized versus community-dwelling) across all severity stages of dementia. Patients were consecutively recruited with their primary caregivers (123 inpatients and 272 outpatients), and the impact of patient-related parameters such as behavioral and psychological symptoms of dementia (BPSD) (Geriatric Depression Scale [GDS] and Neuropsychiatric Inventory [NPI]) and functional capacity (Alzheimer's Disease Cooperative Study-Activities of Daily Living [ADCS-ADL]) on HrQoL was analyzed. Patients' HrQoL was assessed using self-reported and caregiver-rated generic (EuroQoL Instrument) and dementia-specific (Quality of Life-Alzheimer's Disease [Qol-AD]) scales. Patients reported a considerably higher HrQoL than their caregivers on the QoL-AD, EQ-5D, and EQ VAS (p <  0.001). Different dementia severity groups showed significantly worse results in HrQoL for patients with lower MMSE scores. The mean self-reported QoL-AD decreased from 32.3±5.7 in the group with the highest MMSE scores to 27.1±5.5 in patients with the lowest MMSE scores (p <  0.001). A considerably lower HrQoL was shown for institutionalized patients versus participants in outpatient settings (proxy-rated QoL-AD 19.7±4.6 versus 26.0±7.1, p <  0.001). Depressive symptoms (GDS), BPSD (NPI), and reduced functional capacity (ADCS-ADL) were evaluated for their impact on patients' HrQoL. Multivariate models explained between 22% and 54% of the variance in patients' HrQoL. To analyze the causative direction of the reported associations, further longitudinal studies should be conducted.

[Caregiver intervention studies : Recommendations on endpoints and outcome measures for cognitively impaired care recipients]

BACKGROUND

Even though the intervention effects on cognitively impaired care recipients are of interest, the evaluation in dementia caregiver studies on caregiver outcomes is often limited. Furthermore, the comparison of studies and interventions is difficult because of the large variance of endpoints and assessments used in this field.

OBJECTIVE

The aim of this study was to give an overview on the most prevalent outcomes for cognitively impaired care recipients and expert based recommendations for assessment.

MATERIAL AND METHODS

A written Delphi survey was carried out on 16 assessments from 5 dimensions with 14 experts working in different disciplines in German healthcare and research institutes.

RESULTS

The most important outcomes and best rated assessments were 1) for problem behavior: revised memory and behavior problem checklist and neuropsychiatric inventory Q, 2) for depressive symptoms: geriatric depression scale, 3) for quality of life: quality of life in Alzheimer's disease, 4) for cognition: mini mental state examination and 5) for ADL/IADL: Katz activities of daily living and Lawton instrumental activities of daily living.

CONCLUSION

Due to the varying experiences of the experts with particular assessments, the ratings were in some cases relatively heterogeneous. Overall previous international recommendations could be confirmed. There is particular need of German validation studies on internationally used instruments within the dimensions of problem behavior and quality of life.

Characteristics of residents who thrive in nursing home environments: a cross-sectional study

AIM

To describe what characterizes residents with higher levels compared with those with lower levels of thriving in nursing homes using the Thriving of Older People Assessment Scale.

BACKGROUND

Thriving is conceptualized as people's experiences of well-being in relation to the environment where they live. Thriving has the potential to emphasize health-promotion and positive experiences in nursing home residents in addition to current focus on illness and symptoms.

DESIGN

Cross-sectional design.

METHODS

Data from a total sample of 191 residents in a large Swedish nursing home facility were separated into two groups; rated as having high and low thriving based on a median split of thriving total score for each participating resident. The characteristics of residents with higher and lower levels of thriving were compared using bivariate analyses to investigate differences. Data were collected in 2013.

RESULTS

Residents with higher levels of thriving had shorter length of stay at the facility, higher functioning in Activities of Daily Living and less cognitive impairment, lower frequency of behavioural and psychological symptoms and higher assessed quality of life. The ability to walk and possibilities to spend time outdoors were higher among those with higher levels of thriving.

CONCLUSION

Nursing home residents who experience thriving have a higher level of functioning in activities of daily living, a higher quality of life and are less physically and cognitively impaired.

Interventions that support the creation of dementia friendly environments in health care: protocol for a realist review

BACKGROUND

Improving health-care outcomes for people living with dementia when they are admitted to hospital is a policy priority. Dementia friendly interventions in health care promote inclusion of patients and carers in decision-making and adapt practices and environments to be appropriate to the needs of people with cognitive impairment. While there has been a wealth of activity, the number of studies evaluating interventions is limited, and the majority focuses on reporting staff and organisational outcomes. By focusing on patient and carer outcomes, this review will aim to develop an explanatory account of how and in what circumstances dementia friendly environments in health care work for people living with dementia and with what outcomes.

METHOD/DESIGN

Realist review is a theory-driven method which seeks to produce explanatory accounts of why interventions work and specifically, what combination of components are most effective in producing particular outcomes. Stakeholder interviews, a review of the literature, and an expert steering group workshop will be used to explore the assumptions behind interventions that are designed to enhance health care for people living with dementia to understand the underlying programme theories. The review will focus on studies that report patient and carer outcomes, including involvement in decision-making, length of stay and referral to long-term care, adverse incidents (e.g. patient distress, delirium falls, nutrition and hydration and infection), antipsychotic medication prescribing, evidence of patient-centred care and patient and carer satisfaction.

DISCUSSION

The review will provide an explanatory model about how dementia friendly interventions in hospital settings improve outcomes for people living with dementia and their family carers and in what circumstances for future testing and evaluation of future dementia friendly initiatives.

SYSTEMATIC REVIEW REGISTRATION

PROSPERO CRD42015017562.

How does the EQ-5D perform when measuring quality of life in dementia against two other dementia-specific outcome measures?

PURPOSE

This study aimed to assess and compare the psychometric performance of the EQ-5D in relation to other dementia-specific measures, the QoL-AD and DEMQoL, within a psychosocial intervention study.

METHODS

Two hundred and seventy-two people with dementia completed the EQ-5D, DEMQoL and QoL-AD. Convergent and discriminant validity of the measures were assessed, and inter-rater reliability was tested by comparing the self-reported and proxy scores of the measures. Internal consistency was tested using Cronbach's alpha.

RESULTS

Results satisfy convergent validity amongst the three outcome measures. EQ-5D, DEMQoL and QoL-AD total scores were shown to be significantly correlated with each other (p < 0.001) in both participants with dementia and proxy reports. Results also satisfied discriminant validity for participant EQ-5D, DEMQoL and QoL-AD total scores. In relation to reliability between self and proxy scores, the EQ-5D showed higher reliability scores between participant and proxy total scores for mild and moderate level of cognitive impairment and performed better than the dementia-specific measures. Reliability assessed through Cronbach's alpha was satisfactory, indicating adequate internal consistency of all three measures.

CONCLUSIONS

The results suggest that the EQ-5D might have advantages over other dementia-specific measures, and it could be used routinely and as a stand-alone measure of quality of life in dementia research.

Quality of Life and Utility Measurement in a Large Clinical Trial Sample of Patients with Mild to Moderate Alzheimer's Disease: Determinants and Level of Changes Observed

OBJECTIVE

To evaluate the performance (in terms of responsiveness to change, associations with other criterion standards, and indicators of Alzheimer's disease [AD] severity) of a quality-of-life measure (Quality of Life in Alzheimer's Disease [QOL-AD]) and a health utility measure (Health Utilities Index Mark 3 [HUI-3]) from two recently completed clinical trials of a new drug for AD.

METHODS

Change from baseline scores was calculated, and treatment effects were analyzed using mixed models for repeated measures. Three separate models were then estimated to examine the association between the quality-of-life/utility end points and the clinical and other health outcome end points measured during the trials, including cognition, function, behavior, and dependence.

RESULTS

The performance of the two measures differed. Subject-assessed QOL-AD was found to be weakly associated with clinical measures of cognition, and with caregiver reports of function, behavior, and dependence, and showed little movement over time and did not appear to differ by baseline AD severity. Proxy-assessed QOL-AD scores were consistently lower than subject-assessed scores, and the level of decline in QOL-AD was greater using proxy-assessed QOL-AD. Proxy-assessed HUI-3 scores were more strongly associated with clinical measures of cognition, function, behavior, and dependence than the subject- and proxy-assessed QOL-AD scores. Larger proportionate changes over 78 weeks were observed with HUI-3 scores and greater separation in HUI-3 scores by baseline severity.

CONCLUSIONS

Subject-assessed QOL-AD is less likely than proxy-assessed QOL-AD to respond to changes in clinical measures used to track progression in clinical trials of subjects with mild to moderate AD. Proxy-assessed HUI-3 assessments were more in line with other outcome assessments and could therefore be better outcome measures to evaluate clinical progression in mild to moderate AD.

Service utilisation and family support of people with dementia: a cohort study in England

OBJECTIVES

This study aimed to compare costs of caring for people with dementia in domiciliary and residential settings, central England.

METHODS

A cohort of people with dementia was recruited during a hospital stay 2008-2010. Data were collected by interview at baseline, and 6- and 12-month follow-up, covering living situation (own home with or without co-resident carer, care home); cognition, health status and functioning of person with dementia; carer stress; utilisation of health and social services; and informal (unpaid) caring input. Costs of formal services and informal caring (replacement cost method) were calculated. Costs of residential and domiciliary care packages were compared.

RESULTS

Data for 109 people with dementia were collected at baseline; 95 (87.2%) entered hospital from their own homes. By 12 months, 40 (36.7%) had died and 85% of the survivors were living in care homes. Over one-half of people with dementia reported social care packages at baseline; those living alone had larger packages than those living with others. Median caring time for co-resident carers was 400 min/day and 10 h/week for non co-resident carers. Residential care was more costly than domiciliary social care for most people. When the value of informal caring was included, the total cost of domiciliary care was higher than residential care, but not significantly so. Carer stress reduced significantly after the person with dementia entered a care home.

CONCLUSIONS

Caring for people with dementia at home may be more expensive, and more stressful for carers, than care in residential settings.

Self and carer perspectives of quality of life in dementia using the QoL-AD

OBJECTIVE

Quality of life (QoL) is one of the most important outcomes in improving well-being in people with dementia (PwD). The primary aim of the present study was to compare self and carer ratings of QoL in PwD and to identify the most important factors influencing self and carer ratings.

METHODS

We conducted a cross-sectional analytic study of 488 dyads using the Quality of Life in Alzheimer's Disease scale, demographics, data on self-rated health, and clinical characteristics.

RESULTS

Higher levels of self-rated health in PwD were associated with higher self-rated QoL after controlling for depression and activities of daily living. When the carer experienced less stress related to caregiving, the PwD reported better QoL. Higher carer-rated QoL was associated with less carer stress, better health for the family carer, and the PwD being of younger age. When carers lived with the PwD, and reported lower levels of depression and better functional ability for their relative, carer-rated QoL was higher.

CONCLUSIONS

The self-rated health of PwD and carers influences the ratings they make of the QoL of the PwD indicating that it is an important influence on QoL in this population.

Care staff and family member perspectives on quality of life in people with very severe dementia in long-term care: a cross-sectional study

BACKGROUND

Little is known about the quality of life of people with very severe dementia in long-term care settings, and more information is needed about the properties of quality of life measures aimed at this group. In this study we explored the profiles of quality of life generated through proxy ratings by care staff and family members using the Quality of Life in Late-stage Dementia (QUALID) scale, examined factors associated with these ratings, and further investigated the psychometric properties of the QUALID.

METHODS

Proxy ratings of quality of life using the QUALID were obtained for 105 residents with very severe dementia, categorised as meeting criteria for Functional Assessment Staging (FAST) stages 6 or 7, from members of care staff (n = 105) and family members (n = 73). A range of resident and staff factors were also assessed.

RESULTS

Care staff and family member ratings were similar but were associated with different factors. Care staff ratings were significantly predicted by resident mood and awareness/responsiveness. Family member ratings were significantly predicted by use of antipsychotic medication. Factor analysis of QUALID scores suggested a two-factor solution for both care staff ratings and family member ratings.

CONCLUSIONS

The findings offer novel evidence about predictors of care staff proxy ratings of quality of life and demonstrate that commonly-assessed resident variables explain little of the variability in family members' proxy ratings. The findings provide further information about the psychometric properties of the QUALID, and support the applicability of the QUALID as a means of examining quality of life in very severe dementia.

Reliability and validity of the quality of life-Alzheimer disease Chinese version

OBJECTIVES

To evaluate the psychometric properties of the quality of life-Alzheimer disease (QOL-AD) Chinese version in patients with dementia in mainland, China and to compare patient and caregiver reports of patient QOL.

METHODS

The QOL-AD Chinese version was established following standard guidelines for cross-cultural adaptation of measures. The reliability was assessed by internal consistency and test-retest reliability. The validity included construct and convergent validity. A paired Student t test was performed to determine differences between patient reports and caregiver reports.

RESULTS

The reliability for both patient and caregiver reports on the QOL-AD was good (Cronbach α values of 0.66 and 0.87; intraclass correlation coefficients of 0.84 and 0.90 for patient and caregiver reports, respectively). The validity of patient and caregiver reports was supported by correlation with domain measures. All of the multitrait-multimethod correlations demonstrated a high relationship between patient reports and caregiver reports, ranging from 0.26 to 0.55. The caregivers rated patient QOL significantly higher than did the patients.

CONCLUSION

The findings support the use of the Chinese version of the QOL-AD as a generic instrument to measure QOL of AD in mainland China. Further research is needed to clarify the relationship between patient and caregiver reports of patient QOL.

Depression in cognitive impairment

Depression and cognitive disorders, including dementia and mild cognitive impairment, are common in the elderly. Depression is also a common feature of cognitive impairment although the symptoms of depression in cognitive impairment differ from depression without cognitive impairment. Pre-morbid depression approximately doubles the risk of subsequent dementia. There are two predominant, though not mutually exclusive, constructs linking pre-morbid depression to subsequent cognitive impairment: Alzheimer's pathology and the vascular depression hypothesis. When evaluating a patient with depression and cognitive impairment, it is important to obtain caregiver input and to evaluate for alternative etiologies for depressive symptoms such as delirium. We recommend a sequential approach to the treatment of depression in dementia patients: (1) a period of watchful waiting for milder symptoms, (2) psychosocial treatment program, (3) a medication trial for more severe symptoms or failure of psychosocial interventions, and (4) possible ECT for refractory symptoms.

Judging a book by its cover: uniforms and quality of life in special care units for people with dementia

OBJECTIVES

In certain health care facilities, the staff commonly wear uniforms for dementia care. Wearing uniforms are often believed to improve the well-being of institutionalized people with dementia (PwD) by facilitating orientation and preserving hygiene. However, when studied more thoroughly, it appears that their use counters to person centeredness. This study aims to investigate the impact of wearing uniforms on the quality of life (QoL) of institutionalized PwD.

METHOD

A natural experimental design was operated in 4 special care units (SCUs) in France. Two SCUs served as an experimental group (caregivers wearing street clothes except when performing hands-on physical care; N = 13) and 2 served as a comparison group (caregivers wearing uniforms; N = 14). The QoL of PwD was measured using the QoL-Alzheimer's Disease scale, and focus groups were carried out with caregivers.

RESULTS

Overall and significantly enhanced QoL scores were observed for the experimental street clothing staff group when compared to the uniform group. Caregivers also reported subjective impressions of overall beneficial outcomes for PwD when the caregivers were not wearing uniforms and reported feeling more at ease when interacting with them.

CONCLUSION

Results are discussed in terms of intergroup relationships, living and working conditions, and ethical issues.

Quality of life in patients with cognitive impairment: validation of the Quality of Life-Alzheimer's Disease scale in Portugal

BACKGROUND

Quality of Life-Alzheimer's Disease (QOL-AD) is a widely used scale for the study of quality of life in patients with dementia. The aim of this study is the transcultural adaptation and validation of the QOL-AD scale in Portugal.

METHODS

Translation and transcultural adaptation was performed according to state-of-the-art recommendations. For the validation study, 104 patient/caregiver pairs were enrolled. Patients had mild cognitive impairment or mild-to-moderate dementia (due to Alzheimer's disease or vascular dementia). Participants were recruited in a dementia outpatient clinic setting and a long-term care dementia ward. An additional comparison group of 22 patients without cognitive impairment, and their proxies, was recruited in a family practice outpatient clinic. Sociodemographic information on patients and caregivers was obtained. Acceptability, reliability, and construct validity were analyzed.

RESULTS

Internal consistency of the Portuguese version of QOL-AD was good for both patient and caregiver report (Cronbach's α = 0.867 and 0.858, respectively). Construct validity was confirmed by the correlation of patient reported QOL-AD with patient geriatric depression scale scores (ρ = -0.702, p < 0.001) and satisfaction with life scale scores (ρ = 0.543, p < 0.001). Caregiver ratings were correlated with neuropsychiatric inventory (NPI) total score (ρ = -0.404, p < 0.001), NPI-distress (ρ = -0.346, p < 0.001), and patient Mini-Mental State Examination (ρ = 0.319, p < 0.01). QOL-AD patient ratings were higher than caregiver ratings (p < 0.001). Both patient- and caregiver-rated QOL-AD scores were lower in patients with cognitive impairment than in the comparison group without cognitive impairment (p < 0.01).

CONCLUSIONS

A Portuguese version of QOL-AD with consistent psychometric properties was obtained and is proposed as a useful tool for research and clinical purposes.