Skip to main content
Top
Published in: PharmacoEconomics 4/2019

Open Access 01-04-2019 | Alzheimer's Disease | Original Research Article

Family and Caregiver Spillover Effects in Cost-Utility Analyses of Alzheimer’s Disease Interventions

Authors: Pei-Jung Lin, Brittany D’Cruz, Ashley A. Leech, Peter J. Neumann, Myrlene Sanon Aigbogun, Dorothee Oberdhan, Tara A. Lavelle

Published in: PharmacoEconomics | Issue 4/2019

Login to get access

Abstract

Background and objective

Alzheimer’s disease or dementia can impose a significant burden on family and other informal caregivers. This study investigated how the inclusion of family/informal caregiver spillover effects in a cost-utility analysis may influence the reported value of Alzheimer’s disease/dementia interventions.

Methods

We used PubMed to identify Alzheimer’s disease or dementia cost-utility analyses published from 1 January, 2000 to 31 March, 2018. We reviewed and abstracted information from each study using a two-reader consensus process. We investigated the frequency and methods in which family/caregiver spillover costs and health effects were incorporated into cost-utility analyses, and examined how their inclusion may influence the reported incremental cost-effectiveness ratios.

Results

Of 63 Alzheimer’s disease/dementia cost-utility analyses meeting inclusion criteria, 44 (70%) considered at least some family/caregiver spillover costs or health effects. Thirty-two studies incorporated spillover costs only, two incorporated spillover health effects only, and ten incorporated both. The most common approach for accounting for spillover was adding informal caregiving time costs to patient costs (n = 36) and adding informal caregiver quality-adjusted life-years to patient values (n = 7). In a subset of 33 incremental cost-effectiveness ratio pairs from 19 studies, incorporating spillover outcomes made incremental cost-effectiveness ratios more favorable (n = 15; 45%) or kept the intervention cost saving (n = 13; 39%) in most cases. In fewer cases, including spillover increased incremental cost-effectiveness ratios (n = 2; 6%), kept the intervention dominated [more costs/less quality-adjusted life-years] (n = 2; 6%), or changed incremental cost-effectiveness ratio from dominated to less cost/less quality-adjusted life-years (n = 1; 3%). In 11 cases (33%), adding spillover effects into analyses resulted in a lower incremental cost-effectiveness ratio that crossed a common cost-effectiveness threshold, which could have downstream implications for programs or policies that are adopted based on cost-effectiveness analysis results.

Discussion

Most Alzheimer’s disease/dementia cost-utility analyses incorporated spillover costs, often as caregiver time costs, but considered spillover health impacts less often. In about 85% of the analyses, including Alzheimer’s disease/dementia spillover cost or health effects decreased incremental cost-effectiveness ratios or kept the intervention cost saving. The broader value of an Alzheimer’s disease/dementia intervention to society may in some cases be underestimated without considering these spillover effects on family and informal caregivers.
Appendix
Available only for authorised users
Literature
1.
go back to reference Langa KM, Chernew ME, Kabeto MU, Herzog AR, Ofstedal MB, Willis RJ, et al. National estimates of the quantity and cost of informal caregiving for the elderly with dementia. J Gen Intern Med. 2001;16(11):770–8.PubMedCrossRef Langa KM, Chernew ME, Kabeto MU, Herzog AR, Ofstedal MB, Willis RJ, et al. National estimates of the quantity and cost of informal caregiving for the elderly with dementia. J Gen Intern Med. 2001;16(11):770–8.PubMedCrossRef
2.
go back to reference Moore MJ, Zhu CW, Clipp EC. Informal costs of dementia care: estimates from the National Longitudinal Caregiver Study. J Gerontol B Psychol Sci Soc Sci. 2001;56(4):S219–28.PubMedCrossRef Moore MJ, Zhu CW, Clipp EC. Informal costs of dementia care: estimates from the National Longitudinal Caregiver Study. J Gerontol B Psychol Sci Soc Sci. 2001;56(4):S219–28.PubMedCrossRef
3.
go back to reference Schulz R, Martire LM. Family caregiving of persons with dementia: prevalence, health effects, and support strategies. Am J Geriatr Psychiatry. 2004;12(3):240–9.PubMedCrossRef Schulz R, Martire LM. Family caregiving of persons with dementia: prevalence, health effects, and support strategies. Am J Geriatr Psychiatry. 2004;12(3):240–9.PubMedCrossRef
4.
go back to reference Association Alzheimer’s. 2017 Alzheimer’s disease facts and figures. Alzheimers Dement. 2017;13(4):325–73.CrossRef Association Alzheimer’s. 2017 Alzheimer’s disease facts and figures. Alzheimers Dement. 2017;13(4):325–73.CrossRef
5.
go back to reference NAC and AARP. Caregiving in the U.S. June 2015. The National Alliance for Caregiving, Bethesda, MD and the AARP Public Policy Institute, Washington DC. NAC and AARP. Caregiving in the U.S. June 2015. The National Alliance for Caregiving, Bethesda, MD and the AARP Public Policy Institute, Washington DC.
7.
go back to reference Covinsky KE, Newcomer R, Fox P, Wood J, Sands L, Dane K, et al. Patient and caregiver characteristics associated with depression in caregivers of patients with dementia. J Gen Intern Med. 2003;18(12):1006–14.PubMedCrossRef Covinsky KE, Newcomer R, Fox P, Wood J, Sands L, Dane K, et al. Patient and caregiver characteristics associated with depression in caregivers of patients with dementia. J Gen Intern Med. 2003;18(12):1006–14.PubMedCrossRef
15.
go back to reference Koopmanschap MA, van Exel JN, van den Berg B, Brouwer WB. An overview of methods and applications to value informal care in economic evaluations of healthcare. Pharmacoeconomics. 2008;26(4):269–80.PubMedCrossRef Koopmanschap MA, van Exel JN, van den Berg B, Brouwer WB. An overview of methods and applications to value informal care in economic evaluations of healthcare. Pharmacoeconomics. 2008;26(4):269–80.PubMedCrossRef
17.
go back to reference Gold MRSJ, Russell LB, Weinstein MC, editors. Cost-effectiveness in health and medicine. New York: Oxford University Press; 1996. Gold MRSJ, Russell LB, Weinstein MC, editors. Cost-effectiveness in health and medicine. New York: Oxford University Press; 1996.
20.
go back to reference Moher D, Liberati A, Tetzlaff J, Altman DG. Preferred reporting items for systematic reviews and meta-analyses: the PRISMA statement. Ann Intern Med. 2009;151(4):264–9 (W64).PubMedCrossRef Moher D, Liberati A, Tetzlaff J, Altman DG. Preferred reporting items for systematic reviews and meta-analyses: the PRISMA statement. Ann Intern Med. 2009;151(4):264–9 (W64).PubMedCrossRef
22.
go back to reference Bermingham SL. The appropriate use of neuroimaging in the diagnostic work-up of dementia: an economic literature review and cost-effectiveness analysis. Ont Health Technol Assess Ser. 2014;14(2):1–67.PubMedPubMedCentral Bermingham SL. The appropriate use of neuroimaging in the diagnostic work-up of dementia: an economic literature review and cost-effectiveness analysis. Ont Health Technol Assess Ser. 2014;14(2):1–67.PubMedPubMedCentral
23.
go back to reference Caro JJ, Salas M, Ward A, Getsios D, Mehnert A; AHEAD Study Group. Assessment of health economics in Alzheimer’s disease. Economic analysis of galantamine, a cholinesterase inhibitor, in the treatment of patients with mild to moderate Alzheimer’s disease in the Netherlands. Dement Geriatr Cogn Disord. 2002;14(2):84–9. Caro JJ, Salas M, Ward A, Getsios D, Mehnert A; AHEAD Study Group. Assessment of health economics in Alzheimer’s disease. Economic analysis of galantamine, a cholinesterase inhibitor, in the treatment of patients with mild to moderate Alzheimer’s disease in the Netherlands. Dement Geriatr Cogn Disord. 2002;14(2):84–9.
25.
go back to reference D’Amico F, Rehill A, Knapp M, Lowery D, Cerga-Pashoja A, Griffin M, et al. Cost-effectiveness of exercise as a therapy for behavioural and psychological symptoms of dementia within the EVIDEM-E randomised controlled trial. Int J Geriatr Pychiatry. 2016;31(6):656–65. https://doi.org/10.1002/gps.4376.CrossRef D’Amico F, Rehill A, Knapp M, Lowery D, Cerga-Pashoja A, Griffin M, et al. Cost-effectiveness of exercise as a therapy for behavioural and psychological symptoms of dementia within the EVIDEM-E randomised controlled trial. Int J Geriatr Pychiatry. 2016;31(6):656–65. https://​doi.​org/​10.​1002/​gps.​4376.CrossRef
27.
32.
go back to reference Green C, Picot J, Loveman E, Takeda A, Kirby J, Clegg A. Modelling the cost effectiveness of cholinesterase inhibitors in the management of mild to moderately severe Alzheimer’s disease. Pharmacoeconomics. 2005;23(12):1271–82.PubMedCrossRef Green C, Picot J, Loveman E, Takeda A, Kirby J, Clegg A. Modelling the cost effectiveness of cholinesterase inhibitors in the management of mild to moderately severe Alzheimer’s disease. Pharmacoeconomics. 2005;23(12):1271–82.PubMedCrossRef
39.
go back to reference Hornberger J, Michalopoulos S, Dai M, Andrade P, Dilla T, Happich M. Cost-effectiveness of florbetapir-PET in Alzheimer’s disease: a Spanish societal perspective. J Ment Health Policy Econ. 2015;18(2):63–73.PubMed Hornberger J, Michalopoulos S, Dai M, Andrade P, Dilla T, Happich M. Cost-effectiveness of florbetapir-PET in Alzheimer’s disease: a Spanish societal perspective. J Ment Health Policy Econ. 2015;18(2):63–73.PubMed
40.
41.
go back to reference Ikeda S, Yamada Y, Ikegami N. Economic evaluation of donepezil treatment for Alzheimer’s disease in Japan. Dement Geriatr Cogn Disord. 2002;13(1):33–9.PubMedCrossRef Ikeda S, Yamada Y, Ikegami N. Economic evaluation of donepezil treatment for Alzheimer’s disease in Japan. Dement Geriatr Cogn Disord. 2002;13(1):33–9.PubMedCrossRef
42.
go back to reference Jones RW, McCrone P, Guilhaume C. Cost effectiveness of memantine in Alzheimer’s disease: an analysis based on a probabilistic Markov model from a UK perspective. Drugs Aging. 2004;21(9):607–20.PubMedCrossRef Jones RW, McCrone P, Guilhaume C. Cost effectiveness of memantine in Alzheimer’s disease: an analysis based on a probabilistic Markov model from a UK perspective. Drugs Aging. 2004;21(9):607–20.PubMedCrossRef
45.
go back to reference Kirbach S, Simpson K, Nietert PJ, Mintzer J. A Markov model of the cost effectiveness of olanzapine treatment for agitation and psychosis in Alzheimer’s disease. Clin Drug Investig. 2008;28(5):291–303.PubMedCrossRef Kirbach S, Simpson K, Nietert PJ, Mintzer J. A Markov model of the cost effectiveness of olanzapine treatment for agitation and psychosis in Alzheimer’s disease. Clin Drug Investig. 2008;28(5):291–303.PubMedCrossRef
54.
55.
go back to reference Payne K, Davies LM, Noyce PR, Weiss MC. The value of the managed entry of new drugs: a case study of donepezil. Int J Technol Assess Health Care. 2003;19(1):114–28.PubMedCrossRef Payne K, Davies LM, Noyce PR, Weiss MC. The value of the managed entry of new drugs: a case study of donepezil. Int J Technol Assess Health Care. 2003;19(1):114–28.PubMedCrossRef
61.
go back to reference Saint-Laurent Thibault C, Ozer Stillman I, Chen S, Getsios D, Proskorovsky I, Hernandez L, et al. Cost-utility analysis of memantine extended release added to cholinesterase inhibitors compared to cholinesterase inhibitor monotherapy for the treatment of moderate-to-severe dementia of the Alzheimer’s type in the US. J Med Econ. 2015;18(11):930–43. https://doi.org/10.3111/13696998.2015.1063501.PubMedCrossRef Saint-Laurent Thibault C, Ozer Stillman I, Chen S, Getsios D, Proskorovsky I, Hernandez L, et al. Cost-utility analysis of memantine extended release added to cholinesterase inhibitors compared to cholinesterase inhibitor monotherapy for the treatment of moderate-to-severe dementia of the Alzheimer’s type in the US. J Med Econ. 2015;18(11):930–43. https://​doi.​org/​10.​3111/​13696998.​2015.​1063501.PubMedCrossRef
62.
go back to reference Skoldunger A, Johnell K, Winblad B, Wimo A. Mortality and treatment costs have a great impact on the cost-effectiveness of disease modifying treatment in Alzheimer’s disease: a simulation study. Curr Alzheimer Res. 2013;10(2):207–16.PubMedCrossRef Skoldunger A, Johnell K, Winblad B, Wimo A. Mortality and treatment costs have a great impact on the cost-effectiveness of disease modifying treatment in Alzheimer’s disease: a simulation study. Curr Alzheimer Res. 2013;10(2):207–16.PubMedCrossRef
68.
go back to reference Touchon J, Lachaine J, Beauchemin C, Granghaud A, Rive B, Bineau S. The impact of memantine in combination with acetylcholinesterase inhibitors on admission of patients with Alzheimer’s disease to nursing homes: cost-effectiveness analysis in France. Eur J Health Econ. 2014;15(8):791–800. https://doi.org/10.1007/s10198-013-0523-y.PubMedCrossRef Touchon J, Lachaine J, Beauchemin C, Granghaud A, Rive B, Bineau S. The impact of memantine in combination with acetylcholinesterase inhibitors on admission of patients with Alzheimer’s disease to nursing homes: cost-effectiveness analysis in France. Eur J Health Econ. 2014;15(8):791–800. https://​doi.​org/​10.​1007/​s10198-013-0523-y.PubMedCrossRef
71.
go back to reference Willan AR, Goeree R, Pullenayegum EM, McBurney C, Blackhouse G. Economic evaluation of rivastigmine in patients with Parkinson’s disease dementia. Pharmacoeconomics. 2006;24(1):93–106.PubMedCrossRef Willan AR, Goeree R, Pullenayegum EM, McBurney C, Blackhouse G. Economic evaluation of rivastigmine in patients with Parkinson’s disease dementia. Pharmacoeconomics. 2006;24(1):93–106.PubMedCrossRef
74.
go back to reference Yang KC, Chen HH. Probabilistic cost-effectiveness analysis of vaccination for mild or moderate Alzheimer’s disease. Curr Alzheimer Res. 2016;13(7):809–16.PubMedCrossRef Yang KC, Chen HH. Probabilistic cost-effectiveness analysis of vaccination for mild or moderate Alzheimer’s disease. Curr Alzheimer Res. 2016;13(7):809–16.PubMedCrossRef
77.
78.
go back to reference Brown H, D’Amico F, Knapp M, Orrell M, Rehill A, Vale L, et al. A cost effectiveness analysis of maintenance cognitive stimulation therapy (MCST) for people with dementia: examining the influence of cognitive ability and living arrangements. Aging Ment Health. 2018:1–6. https://doi.org/10.1080/13607863.2018.1442410. Brown H, D’Amico F, Knapp M, Orrell M, Rehill A, Vale L, et al. A cost effectiveness analysis of maintenance cognitive stimulation therapy (MCST) for people with dementia: examining the influence of cognitive ability and living arrangements. Aging Ment Health. 2018:1–6. https://​doi.​org/​10.​1080/​13607863.​2018.​1442410.
80.
87.
go back to reference NAC. Alzheimer’s caregiving in the U.S. 2009. National Alliance for Caregiving, Bethesda, MD. NAC. Alzheimer’s caregiving in the U.S. 2009. National Alliance for Caregiving, Bethesda, MD.
93.
go back to reference Brazier J, Connell J, Papaioannou D, Mukuria C, Mulhern B, Peasgood T, et al. A systematic review, psychometric analysis and qualitative assessment of generic preference-based measures of health in mental health populations and the estimation of mapping functions from widely used specific measures. Health Technol Assess. 2014;18(34):vii–viii, xiii–xxv, 1–188. https://doi.org/10.3310/hta18340. Brazier J, Connell J, Papaioannou D, Mukuria C, Mulhern B, Peasgood T, et al. A systematic review, psychometric analysis and qualitative assessment of generic preference-based measures of health in mental health populations and the estimation of mapping functions from widely used specific measures. Health Technol Assess. 2014;18(34):vii–viii, xiii–xxv, 1–188. https://​doi.​org/​10.​3310/​hta18340.
97.
go back to reference Brouwer WB, van Exel NJ, Koopmanschap MA, Rutten FF. The valuation of informal care in economic appraisal: a consideration of individual choice and societal costs of time. Int J Technol Assess Health Care. 1999;15(1):147–60.PubMedCrossRef Brouwer WB, van Exel NJ, Koopmanschap MA, Rutten FF. The valuation of informal care in economic appraisal: a consideration of individual choice and societal costs of time. Int J Technol Assess Health Care. 1999;15(1):147–60.PubMedCrossRef
Metadata
Title
Family and Caregiver Spillover Effects in Cost-Utility Analyses of Alzheimer’s Disease Interventions
Authors
Pei-Jung Lin
Brittany D’Cruz
Ashley A. Leech
Peter J. Neumann
Myrlene Sanon Aigbogun
Dorothee Oberdhan
Tara A. Lavelle
Publication date
01-04-2019
Publisher
Springer International Publishing
Published in
PharmacoEconomics / Issue 4/2019
Print ISSN: 1170-7690
Electronic ISSN: 1179-2027
DOI
https://doi.org/10.1007/s40273-019-00788-3

Other articles of this Issue 4/2019

PharmacoEconomics 4/2019 Go to the issue