Valuation of Informal Care Provided to People Living With Dementia: A Systematic Literature Review

A New Approach for Assessing the Value of Informal Care in Alzheimer's Disease

OBJECTIVES

Given that most informal caregivers providing help for patients with Alzheimer's disease are retired spouses or unemployed people, there is no market value for their time. Most articles that tried to estimate the cost of informal care for Alzheimer's disease rely on the so-called "replacement" methodology, which assumes that 1 hour of informal care has the same value as 1 hour of professional care. Little attention has been dedicated to exploring the validity of this assumption. In this article, we determine the relationship between the price of informal caregiving and professional care from the first-order condition of a theoretical model that maximizes informal caregivers' satisfaction with providing care.

METHODS

This article formalizes the marginal substitution rate between informal and formal care. We assume that the caregiver's utility depends on the caregiver's burden and the patient's quality of life (QoL). After explaining the parameters of the marginal utility of caregivers, we estimate each of these parameters using PLASA data.

RESULTS

Our results show how the value of informal care increases as the care contributes to improving patients' QoL but decreases as the burden on the caregiver increases and professionals contribute to patients' QoL.

CONCLUSIONS

The central assumption of the replacement cost method of perfect substitution between informal and formal care leads to a misestimation of the value of informal care. The effects of informal care must be considered (direct effect on the burden and indirect effects on the patient's QoL).

Time value of informal care of people with alzheimer's disease in Spain: a population-based analysis

The aims of this paper are to estimate the monetary value of informal care for people with Alzheimer's disease (AD) in Spain, to compare results with those obtained in 2008 and to analyse the main determinants of the time of the value of informal care. The Survey on Disabilities, Autonomy and Dependency carried out in Spain in 2020/21 was used to obtain information about disabled individuals with AD and their informal caregivers. Assessment of informal care time was carried out using two alternative approaches: the replacement method, and the contingent valuation method (willingness to pay & willingness to accept). The number of people with AD residing in Spanish households and receiving informal care rose to more than 200,000, representing an increase of 43% compared with 2008. The average number of hours of informal care per week ranged from 86 to 101 h, with an estimated value of between €31,584 - €37,019 per year per caregiver (willingness to accept) or €71,653 - €83,984 per year (replacement). The annual total number of caregiving hours ranged between 896 and 1,061 million hours, representing between 0.52 and 0.62 of GDP in 2021 (willingness to accept) or 1.19-1.40 of GDP (replacement). The level of care needs plays a central role in explaining heterogeneity in estimates. These results should be taken into account by decision-makers for long-term care planning in the coming years.

Methods for Measuring and Valuing Informal Care: A Systematic Review and Meta-Analysis in Stroke

OBJECTIVES

To accurately capture informal care in healthcare evaluations, rigorous approaches are required to measure and value this important care component. In this systematic review and meta-analysis, we intended to summarize the current methods of measuring and valuing informal care costs in healthcare evaluations (full and partial healthcare evaluations, including cost of illness and cost analysis) in stroke.

METHODS

A systematic search was conducted in MEDLINE, Embase, EconLit, and CINAHL. We used EndNote 20, Research Screener, and Covidence platforms for screening and data extraction. A meta-analysis was performed on informal care hours, and a subgroup meta-analysis was conducted based on stroke severity.

RESULTS

A total of 31 articles were included in the qualitative synthesis. There was variation among the studies in the informal care measurement and valuation approaches. The meta-analysis of studies where data on informal care hours were available showed an estimate of informal care hours of 25.76 per week (95% CI 13.36-38.16) with a high heterogeneity (I2 = 99.97%). The overall risk of bias in the studies was assessed as low.

CONCLUSIONS

Standardizing the measurement and valuation of informal care costs is essential for improving the consistency and comparability of economic evaluations. Pilot studies that incorporate standardized informal care cost valuation methods can help identify any practical challenges and capture the impact of informal care more accurately.

The Economic Costs of Informal Care: Estimates from a National Cross-Sectional Survey in The Netherlands

Faced with an unprecedented demand for long-term care, European health care systems are moving towards mixed care models, where the welfare state and informal caregivers share care responsibilities. While informal care is often viewed as a means of alleviating pressure on public care, it comes with significant economic costs for caregivers, their employers, and society at large. This study uses nationally representative data to estimate the total direct (informal care time and out-of-pocket costs) and indirect (productivity) economic costs of informal care in the Netherlands in 2019. Informal care time costs are estimated using the opportunity cost and the proxy good methods. Indirect costs are estimated using the human capital and friction cost approaches. Our results reveal the considerable annual societal cost of informal care in the Netherlands, ranging between €17.5 billion and €30.1 billion, depending on the valuation approach. These costs are equivalent to 2.15% and 3.71% of Dutch GDP in 2019, comparable to the public expenditure on long-term care in that year. Female caregivers account for slightly more than half (53%-57%) of the total costs. Around 57%-88% of these costs are in the form of informal care time. The main driver of indirect costs is the temporary cessation of work, which comprises 12%-17% of the total costs. Findings corroborate that substantial resources, yet thus far largely disregarded, are spent on informal care even in a country with a relatively generous public long-term care system.

Putting a Dollar Value on Informal Care Time Provided to People Living With Dementia: A Discrete Choice Experiment

OBJECTIVES

Informal care represents a significant cost driver in dementia but monetizing informal care hours to inform cost-of-illness or economic evaluation studies remains a challenge. This study aimed to use a discrete choice experiment to estimate the value of informal care time provided to people with dementia in Australia accounting for positive and negative impacts of caregiving.

METHODS

Attributes and levels were derived from a literature review, interviews with carers, and advice received from an advisory group. Attributes included 4 positive and negative caregiving experiences, in addition to "hours of care provided" and the "monetary compensation from the government." A D-efficient design was constructed with 2 generic alternatives that represented hypothetical informal caregiving situations. The discrete choice experiment survey was administered online to a representative sample of the Australian general population and a group of informal carers of people with dementia. The willingness to accept estimates were calculated for the 2 samples separately using the mixed logit model in the willingness to pay space.

RESULTS

Based on 700 respondents included in the analysis (n = 488 general public, n = 212 informal carers), the mean willingness to accept for an additional hour of informal care, corrected for the positive and negative impacts of informal care, was $21 (95% CI 18-23) for the general public and $20 (95% CI 16-25) for the informal carers sample.

CONCLUSION

The estimates generated in this study can be used to inform future cost-of-illness studies and economic evaluations, ensuring that informal care time is considered in future policy and funding decisions.

Model-Based Economic Evaluations of Interventions for Dementia: An Updated Systematic Review and Quality Assessment

BACKGROUND

There has been an increase in model-based economic evaluations of interventions for dementia. The most recent systematic review of economic evaluations for dementia highlighted weaknesses in studies, including lack of justification for model assumptions and data inputs.

OBJECTIVE

This study aimed to update the last published systematic review of model-based economic evaluations of interventions for dementia, including Alzheimer's disease, with a focus on any methodological improvements and quality assessment of the studies.

METHODS

Systematic searches in eight databases, including PubMed, Cochrane, Embase, CINAHL, PsycINFO, EconLit, international HTA database, and the Tufts Cost-Effectiveness Analysis Registry were undertaken from February 2018 until August 2022. The quality of the included studies was assessed using the Philips checklist and the Consolidated Health Economic Evaluation Reporting Standards (CHEERS) 2022 checklist. The findings were summarized through narrative analysis.

RESULTS

This review included 23 studies, comprising cost-utility analyses (87%), cost-benefit analyses (9%) and cost-effectiveness analyses (4%). The studies covered various interventions, including pharmacological (n = 10, 43%), non-pharmacological (n = 4, 17%), prevention (n = 4, 17%), diagnostic (n = 4, 17%) and integrated (n = 1, 4%) [diagnostics-pharmacologic] strategies. Markov transition models were commonly employed (65%), followed by decision trees (13%) and discrete-event simulation (9%). Several interventions from all categories were reported as being cost effective. The quality of reporting was suboptimal for the Methods and Results sections in almost all studies, although the majority of studies adequately addressed the decision problem, scope, and model-type selection in their economic evaluations. Regarding the quality of methodology, only a minority of studies addressed competing theories or clearly explained the rationale for model structure. Furthermore, few studies systematically identified key parameters or assessed data quality, and uncertainty was mostly addressed partially.

CONCLUSIONS

This review informs future research and resource allocation by providing insights into model-based economic evaluations for dementia interventions and highlighting areas for improvement.

Incorporating frailty to address the key challenges to geriatric economic evaluation

BACKGROUND

The multidimensional and dynamically complex process of ageing presents key challenges to economic evaluation of geriatric interventions, including: (1) accounting for indirect, long-term effects of a geriatric shock such as a fall; (2) incorporating a wide range of societal, non-health outcomes such as informal caregiver burden; and (3) accounting for heterogeneity within the demographic group. Measures of frailty aim to capture the multidimensional and syndromic nature of geriatric health. Using a case study of community-based falls prevention, this article explores how incorporating a multivariate frailty index in a decision model can help address the above key challenges.

METHODS

A conceptual structure of the relationship between geriatric shocks and frailty was developed. This included three key associations involving frailty: (A) the shock-frailty feedback loop; (B) the secondary effects of shock via frailty; and (C) association between frailty and intervention access. A case study of economic modelling of community-based falls prevention for older persons aged 60 + was used to show how parameterising these associations contributed to addressing the above three challenges. The English Longitudinal Study of Ageing (ELSA) was the main data source for parameterisation. A new 52-item multivariate frailty index was generated from ELSA. The main statistical methods were multivariate logistic and linear regressions. Estimated regression coefficients were inputted into a discrete individual simulation with annual cycles to calculate the continuous variable value or probability of binary event given individuals' characteristics.

RESULTS

All three conceptual associations, in their parameterised forms, contributed to addressing challenge (1). Specifically, by worsening the frailty progression, falls incidence in the model increased the risk of falling in subsequent cycles and indirectly impacted the trajectories and levels of EQ-5D-3 L, mortality risk, and comorbidity care costs. Intervention access was positively associated with frailty such that the greater access to falls prevention by frailer individuals dampened the falls-frailty feedback loop. Association (B) concerning the secondary effects of falls via frailty was central to addressing challenge (2). Using this association, the model was able to estimate how falls prevention generated via its impact on frailty paid and unpaid productivity gains, out-of-pocket care expenditure reduction, and informal caregiving cost reduction. For challenge (3), frailty captured the variations within demographic groups of key model outcomes including EQ-5D-3 L, QALY, and all-cause care costs. Frailty itself was shown to have a social gradient such that it mediated socially inequitable distributions of frailty-associated outcomes.

CONCLUSION

The frailty-based conceptual structure and parameterisation methods significantly improved upon the methods previously employed by falls prevention models to address the key challenges for geriatric economic evaluation. The conceptual structure is applicable to other geriatric and non-geriatric intervention areas and should inform the data selection and statistical methods to parameterise structurally valid economic models of geriatric interventions.

The broader benefits of vaccines: methodologies for inclusion in economic evaluation

BACKGROUND

As the societal value of vaccines is increasingly recognized, there is a need to examine methodological approaches that could be used to integrate these various benefits in the economic evaluation of a vaccine.

RESEARCH DESIGN AND METHODS

A literature review and two expert panel meetings explored methodologies to value herd immunity, health spillover effects (beyond herd immunity), impact on antimicrobial resistance, productivity, and equity implications of vaccines.

RESULTS

The consideration of broader benefits of vaccines in economic evaluation is complicated and necessitates technical expertise. Whereas methodologies to account for herd immunity and work productivity are relatively well established, approaches to investigate equity implications are developing and less frequently applied. Modeling the potential impact on antimicrobial resistance not only depends on the multi-faceted causal relationship between vaccination and resistance but also on data availability.

CONCLUSIONS

Different methods are available to value the broad impact of vaccines, and it is important that analysts are aware of their strengths and limitations and justify their choice of method. In the future, we expect that an increasing number of economic evaluations will consider the broader benefits of vaccines as part of their base-case analysis or in sensitivity analyses.

Supporting First Nations Family Caregivers and Providers: Family Caregivers', Health and Community Providers', and Leaders' Recommendations

Family caregivers and care providers are increasingly becoming more distressed and reaching a breaking point within current systems of care. First Nations family caregivers and the health and community providers employed in First Nations communities have to cope with colonial, discriminatory practices that have caused intergenerational trauma and a myriad of siloed, disconnected, and difficult-to-navigate federal-, provincial/territorial-, and community-level policies and programs. Indigenous participants in Alberta's Health Advisory Councils described Indigenous family caregivers as having more difficulty accessing support than other Alberta caregivers. In this article, we report on family caregivers', providers', and leaders' recommendations to support First Nations family caregivers and the health and community providers employed in First Nations. We used participatory action research methods in which we drew on Etuaptmumk (the understanding that being in the world is the gift of multiple perspectives) and that Indigenous and non-Indigenous views are complementary. Participants were from two First Nation communities in Alberta and included family caregivers (n = 6), health and community providers (n = 14), and healthcare and community leaders (n = 6). Participants advised that family caregivers needed four types of support: (1) recognize the family caregivers' role and work; (2) enhance navigation and timely access to services, (3) improve home care support and respite, and (4) provide culturally safe care. Participants had four recommendations to support providers: (1) support community providers' health and wellbeing; (2) recruit and retain health and community providers; (3) improve orientation for new providers; and (4) offer providers a comprehensive grounding in cultural awareness. While creating a program or department for family caregivers may be tempting to address caregivers' immediate needs, improving the health of First Nations family caregivers requires a population-based public health approach that focuses on meaningful holistic system change to support family caregivers.

A 14-Year Longitudinal Analysis of Healthcare Expenditure on Dementia and Related Factors (DEMENCOST Study)

BACKGROUND

The large number of dementia cases produces a great pressure on health and social care services, which requires efficient planning to meet the needs of patients through infrastructure, equipment, and financial, technical, and personal resources adjusted to their demands. Dementia analysis requires studies with a very precise patient characterization of both the disease and comorbidities present, and long-term follow-up of patients in clinical aspects and patterns of resource utilization and costs generated.

OBJECTIVE

To describe and quantify direct healthcare expenditure and its evolution from three years before and up to ten years after the diagnosis of dementia, compared to a matched group without dementia.

METHODS

Retrospective cohort design with follow-up from 6 to 14 years. We studied 996 people with dementia (PwD) and 2,998 controls matched for age, sex, and comorbidity. This paper adopts the provider's perspective as the perspective of analysis and refers to the costs actually incurred in providing the services. Aggregate costs and components per patient per year were calculated and modelled.

RESULTS

Total health expenditure increases in PwD from the year of diagnosis and in each of the following 7 years, but not thereafter. Health status and mortality are factors explaining the evolution of direct costs. Dementia alone is not a statistically significant factor in explaining differences between groups.

CONCLUSION

The incremental direct cost of dementia may not be as high or as long as studies with relatively short follow-up suggest. Dementia would have an impact on increasing disease burden and mortality.

A systematic review of economic evaluations of preoperative smoking cessation for preventing surgical complications

BACKGROUND

Whilst there is a substantial body of evidence on the costs and benefits of smoking cessation generally, the benefits of routinely providing smoking cessation for surgical populations are less well known. This review summarises the evidence on the cost-effectiveness of preoperative smoking cessation to prevent surgical complications.

MATERIALS AND METHODS

A search of the Cochrane, Econlit, EMBASE, Health Technology Assessment, Medline Complete and Scopus databases was conducted from inception until 23/06/2021. Peer-reviewed, English-language articles describing economic evaluations of preoperative smoking cessation interventions to prevent surgical complications were included. Search results were independently screened for potentially eligible studies. Study characteristics, economic evaluation methods and cost-effectiveness results were extracted by one reviewer and details checked by a second. Two authors independently assessed reporting and methodological quality using the Consolidated Health Economic Evaluation Reporting Standards statement (CHEERS) and the Quality of Health Economic Studies Instrument checklist (QHES) respectively.

RESULTS

After removing duplicates, twenty full text articles were screened from 1423 database records, resulting in six included economic evaluations. Studies from the United States (n = 4), France (n = 1) and Spain (n = 1) were reported between 2009 and 2020. Four evaluations were conducted from a payer perspective. Two-thirds of evaluations were well-conducted (mean score 83) and well-reported (on average, 86% items reported). All studies concluded preoperative smoking cessation is cost-effective for preventing surgical complications; results ranged from cost saving to €53,131 per quality adjusted life year gained.

CONCLUSIONS

Preoperative smoking cessation is cost-effective for preventing surgical complications from a payer or provider perspective when compared to standard care. There is no evidence from outside the United States and Europe to inform healthcare providers, funders and policy-makers in other jurisdictions and more information is needed to clarify the optimal point of implementation to maximise cost-effectiveness of preoperative smoking cessation intervention.

SYSTEMATIC REVIEW REGISTRATION NUMBER

PROSPERO 2021 CRD42021257740. RESEARCH REGISTRY REGISTRATION NUMBER: reviewregistry1369.

Economic costs of dementia in 11 countries in Europe: Estimates from nationally representative cohorts of a panel study

Background

With population aging, the economic burden of dementia is growing in Europe. Understanding the economic costs of dementia provides an important basis for prioritization in public health policy and resource allocation.

Methods

We calculate the economic costs of dementia, including both direct medical and social care costs and indirect costs of informal care, for 11 countries in Europe. Costs are estimated using population-representative data from the Survey of Health, Ageing, and Retirement in Europe from 2004 to 2017, supplemented with external information about wages of care workers, dementia prevalence, and fraction of direct costs paid by other sources. We report overall costs for persons, both living and deceased with dementia and also isolate the costs attributable to dementia by estimating regression models that relate a given cost component to dementia while controlling for coexisting conditions and demographics. We make the monetary data comparable by adjusting for inflation and Purchasing Power Parity to 2018 euros.

Findings

Average annual direct out of pocket costs that can be attributed to dementia vary between EUR 253(95% CI: -17 to 522) and EUR 859 (95% CI: -587 to 2306) across countries, but are not statistically significant after adjustment for multiple testing. Average annual hours of informal care that can be attributed to dementia vary between 163 (95% CI: 27-299) and 1051 (95% CI: 15-2086) annual hours across countries, and are statistically significant in all countries before adjustment for multiple testing, and in seven out of 11 countries after this adjustment. Combining these estimates with external wage information in each country implies a burden between EUR 2687.4 (95% CI: 704.5 to 4670.3) and EUR 15,468 (95% CI: 8088.1 to 22,847.9) per individual with dementia per year depending on the country. When combined with external estimates of the fraction of direct costs covered by other payment sources (insurance, government) and numbers of individuals with dementia, estimates of the total costs of dementia at the country level vary from EUR 162.9 million (95% CI: 56.3 to 269.5) in Estonia to EUR 32,606.9 (95% CI: 13,893.9 to 51,319.9) in Germany. Informal care costs account for the largest proportion of costs attributable to dementia in all European countries, varying between about 50% and about 90%.

Interpretation

The economic burden of dementia on families in terms of direct out-of-pocket and informal care costs varies greatly by country, depending on the health and social care systems. Informal care costs accounts for the largest proportion of costs, requiring policy attention to dementia care provision and costs.

Funding

This project is funded by the National Institute on Aging, National Institutes of Health, USA (R01 AG030153).

Protocol for a systematic review of the financial burden experienced by people affected by head and neck cancer

INTRODUCTION

Head and neck cancer (HNC) is the seventh most common cancer worldwide. Treatment may be associated with the inability to work and substantial out-of-pocket expenses. However, to date, there is little research synthesising quantitative evidence on the financial burden experienced by people affected by HNCs, including family members and informal carers. The purpose of this systematic review is to estimate out-of-pocket costs, reduced or lost income and informal care costs associated with HNC, identify categories of financial burden and investigate which costs predominate when considering financial burden in this population.

METHODS AND ANALYSIS

A comprehensive search of peer-reviewed literature will be conducted for articles published from 01/01/2010 to 19/03/2021 (CINAHL, Cochrane library, EconLit, Embase, Medline Complete). Published, English-language articles describing primary and secondary research directly related to the topic and quantitative cost data will be included. One researcher will complete the searches and screen results for potentially eligible studies. Three other researchers will independently screen the titles and abstracts of a subset of 30% citations, that is, 10% each. Full text articles will be independently screened by three reviewers. Any disagreement will be resolved by consensus among the team. Study and patient characteristics, cost categories and financial burden will be independently extracted by one reviewer and checked by a second. Methodological quality will be evaluated independently by two reviewers. Descriptive analyses will be undertaken and a narrative summary of the included studies will be provided.

ETHICS AND DISSEMINATION

Ethics approval is not required to conduct this research because this is a planned systematic review of published literature. Findings will be presented at leading cancer and health economic conferences, published in a peer-reviewed journal and disseminated via website postings and social media channels.

SYSTEMATIC REVIEW REGISTRATION NUMBER

CRD42021252929.

Protocol for a systematic review of economic evaluations of preoperative smoking cessation interventions for preventing surgical complications

INTRODUCTION

The short-term economic benefit of embedding best practice tobacco dependence treatment (TDT) into healthcare services prior to surgery across different populations and jurisdictions is largely unknown. The aim of this systematic review is to summarise the cost-effectiveness of preoperative smoking cessation interventions for preventing surgical complications compared with usual care. The results will provide hospital managers, clinicians, healthcare professionals and policymakers with a critical summary of the economic evidence on providing TDT routinely before surgery, aiding the development and dissemination of unified, best practice guidelines, that is, implementation of article 14 of the WHO Framework Convention on Tobacco Control.

METHODS AND ANALYSIS

A comprehensive search of peer-reviewed literature will be conducted from database inception until 23 June 2021 (Cochrane, Econlit, Embase, Health Technology Assessment, Medline Complete, Scopus). Published, English-language articles describing economic evaluations of preoperative smoking cessation interventions for preventing surgical complications will be included. One researcher will complete the searches and two researchers will independently screen results for eligible studies. Any disagreement will be resolved by the third researcher. A narrative summary of included studies will be provided. Study characteristics, economic evaluation methods and cost-effectiveness results will be extracted by one reviewer and descriptive analyses will be undertaken. A second reviewer will review data extracted for accuracy from 10% of the included studies. Reporting and methodological quality of the included studies will be evaluated independently by two reviewers using the Consolidated Health Economic Evaluation Reporting Standards statement and the Quality of Health Economic Studies Instrument checklist, respectively.

ETHICS AND DISSEMINATION

This research does not require ethics approval because the study is a planned systematic review of published literature. Findings will be presented at health economic, public health and tobacco control conferences, published in a peer-reviewed journal and disseminated via social media.

TRIAL REGISTRATION NUMBER

CRD42021257740.