Vol. 9 nº 1 - Jan/Feb/Mar de 2015
Original Article Pages 42 to 50
 

Indirect cost with dementia: a Brazilian study
Custos indiretos com demência: um estudo brasileiro

Authors: Ceres Eloah Lucena Ferretti1; Ricardo Nitrini2; Sonia Maria Dozzi Brucki3

PDF

Descriptors: dementia, economics, costs of illness.
Descritores:
demência, economia, custos da doença.

ABSTRACT:
Costs with dementia have been the focus of research around the world and indirect costs to the caregiver appear in the literature as responsible for the greatest impact. In Latin American (LA) studies, indirect costs with dementia range from 60% to 75% of family income.
OBJECTIVE: To present preliminary results of the study "Description of the methods and cost analysis with dementia" currently being conducted at the Behavioral and Cognitive Neurology Unit of Hospital de Clínicas of University of São Paulo - HC-FMUSP.
METHODS: A cross-sectional study which, to date, includes interviews of 93 primary caregivers. The research protocol includes a sociodemographic questionnaire, the Functional Assessment Staging (FAST) scale, the Burden Interview (Zarit), an economic classification scale, and the Resource Utilization in Dementia (RUD) scale.
RESULTS: Monthly indirect costs were US$ 1,122.40, US$ 1,508.90 and US$ 1,644.70 stratified into mild, moderate and severe dementia, respectively. The projected annual indirect costs were US$ 13,468.80, US$ 18,106.80 and US$ 19,736.40, representing 69 to 169% of family income.
CONCLUSION: This small sample showed that the impact of indirect costs with dementia in Brazil may be higher than that reported in other Latin American (LA) studies. These initial results may represent an important contribution for further research on costs with dementia in LA.

RESUMO:
Custos com demência tem sido objeto de pesquisa em todo o mundo e os custos indiretos dos cuidadores aparecem na literatura como responsáveis por maior impacto.
OBJETIVO: Apresentar resultados preliminares do estudo "Descrição dos métodos e análise dos custos com demência, que está sendo conduzido no ambulatório de Neurologia Cognitiva e do Comportamento do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo - HC-FMUSP.
MÉTODOS: Estudo de corte transversal que até o momento entrevistou 93 cuidadores primários. O protocolo de pesquisa inclui um questionário sociodemográfico, a escala de avaliação funcional (FAST), a escala de sobrecarga dos cuidadores (Zarit), uma escala de classificação econômica e a escala de utilização de recursos na demência (RUD).
RESULTADOS: Custos indiretos mensais variaram de US$ 1.122,40 a US$ 1.508,90 e US$ 1.644,70 estratificados pela gravidade da demência em leve, moderada e grave. Projeções anuais dos custos indiretos variaram de US$ 13.468,80 a US$ 18.106,80 e US$ 19.736,40 o que representou de 69% a 169% da renda familiar.
CONCLUSÃO: Nossa pequena amostra mostrou que o impacto dos custos indiretos com demência no Brasil pode ser maior do que o encontrado em outros estudos latino americanos prévios. Esperamos que nossos resultados iniciais possam ser importantes para futures pesquisas sobre custos com demência na América Latina.

INTRODUCTION

Costs with dementia have been the focus of research worldwide and informal care costs to caregivers appears to be responsible for the greatest impact.1

Dementia is considered an age-related disease and thus its prevalence and incidence of cases is higher among the elderly, i.e. persons aged 60-65 years or older. Currently, there is great concern over the global aging population, and the possibility of emergence of this type of neurodegenerative brain disorder.2 The United Nations - UN - estimates 700 million elderly people in the world today, a figure set to rise to 2 billion by 2050.3 In LA, Brazil's elderly represents 11% of its total population, and this can according to epidemiological data, have a profound impact on Latin American (LA) countries.4,5

The phenomenon of aging observed in recent decades, especially in developing countries, is undoubtedly a positive achievement, but leads to the need to prepare societies to adopt measures for controlling chronic non-communicable diseases - NCDs, including dementia.2,3,6 The economic impact of these diseases calls for organization of health systems in these countries, toward promoting quality during these additional years of life and adapting to the consequent change in the demographic and epidemiological profiles observed in recent decades.2,6,7

Dementia can be considered a multifactorial syndrome that rapidly or slowly imposes on individuals affected a serious loss of higher cortical functions.8 For disease course, affected individuals can expect 8-10 years or more of survival after diagnosis where this variation may be often associated with quality of care received by the patient. However, gradually, the person becomes totally dependent on others for the performance of their civil and everyday activities. Thus, at some point in the disease course, the need arises for specific pharmacological and non-pharmacological treatment given by a multidisciplinary team.5,9,10 In addition, informal caregivers (family member or close friend) or formal caregivers (paid caregiver or nursing home placement) may be required.11,12

Meeting these requirements renders the costs of the illness an important economic and social impact on monthly income of families, and exert a much larger social burden than some societies can afford, especially low income ones. With regard to expenditure on dementia, recent data from international organizations has revealed overall annual costs of US$ 604 billion, only 16% of which represents direct medical costs of health and social systems.1 Informal care costs represent the greatest burden, which in 2013 accounted for about US$ 216 billion, corresponding to 17.5 billion hours expended by informal caregivers on patients.1,2

In Europe, a recent review estimated a total annual cost of € 692 billion for the 19 subtypes of neurological disorders, including dementia. Of this total, € 105.2 billion was allocated to direct costs of their treatment.13 Regardless of the different economic and social models of countries of low, medium or high-income, the costs associated with dementia vary. These disparities have been attributed to the methodology used, such as the bases for calculating hours dispensed by the caregiver and lack of standardization of criteria on conceptual understanding and definitions of direct and indirect costs.11

According to Alzheimer Disease International - ADI, costs of dementia can be sub-classified as direct medical costs, direct social care costs and indirect costs.14 Direct medical costs refer to the medical care system, such as costs of hospital care, drugs and visit to clinics. Direct social care costs refer to formal services provided outside the medical care system and also out-of-pocket expenses of caregivers with items not covered by the local health system. There is some consensus among researchers concerning the difficulty making a clear distinction between social and medical care. Thus, direct costs are those related to social and public health coverages that are promoted by the Health System. Indirect costs include informal costs such as hours dedicated by the caregiver in meeting the needs of patients for basic activities of daily living (ADL), instrumental activities of daily living (IADL), supervision and total loss or reduction of formal working hours of caregiver productivity. Finally, indirect costs can be considered as the sum of informal costs + direct social costs to the caregiver.14 In this study, all indirect costs will be considered, excluding direct medical costs of the health system. As a basis for calculating indirect costs, some researchers adopt the minimum monthly wage in the country and an 8-hour working day to obtain the financial value of the hours spent on care.1,15-17

In LA, only a few studies have addressed costs with dementia11,15,18 and therefore the main objectives of the present study were to ascertain: [1] the monthly/annual average indirect cost with dementia; [2] the impact of this expenditure on the caregiver; [3] whether severity of dementia translates to higher indirect costs; and [4] Whether the financial burden correlates with higher overall burden levels for caregivers.

METHODS

This is a cross-sectional observational study. The project "Description of Methods and Cost Analysis with Dementia" was submitted to the Research Ethics Committee of Hospital das Clinicas of the University of São Paulo - HC-FMUSP and approved under number 368.096/2013. In this paper, the preliminary results of the indirect costs of patients and their caregivers evaluated until 12/31/2013 are reported.

Participants. A convenience sample of outpatients followed at the neurology and cognitive behavior unit was assessed. All patients were previously assessed by a neurologist. At the end of the study, the sample will comprise 300 caregivers.

Inclusion criteria. Patients with a diagnosis of probable dementia at mild, moderate or severe stages;19 - Informal Caregivers spending time with the patient at least three times a week.

Exclusion criteria. Patients diagnosed with Mild Cognitive Impairment (MCI) and their caregivers.

Professionals involved. A nurse specialized in dementia and a neurologist.

Measuring instruments. A research protocol including:

  • A semi-structured questionnaire, to collect sociodemographic and clinical status of patients and caregivers containing: Gender, age, education, retirement, income, economic status, kinship, marital status, place of residence of the patient, medical diagnosis, disease progression, co-morbidities, caregiver disease, use of medication prescribed by a physician. Direct monthly social care costs, out-of-pocket spending by caregiver on: drugs, medical appointments/health insurance, transportation, food, diapers, clothing, paid caregiver and other expenses. Hours spent by the caregiver on ADL, IADL, care and supervision.
  • Functional Assessment Staging - FAST Scale, to stratify severity of dementia.20
  • Economic Criterion Brazil scale, to identify the economic status of the caregiver.21
  • Zarit Burden Interview scale, to determine the levels of caregiver burden.22
  • Resource Utilization Dementia-RUD scale, to evaluate resources used in direct and indirect costs.23

  • Procedures. Caregivers were invited while waiting for medical appointments - waiting room - by the nurse responsible for the interviews, or were referred by the medical team after consultation. After presenting the study proposal to caregivers in detail, caregivers were given an Informed Consent Form and requested to sign this, retaining a copy.

    To determine indirect costs with items not covered by the health system and paid out-of-pocket by the caregiver, the hours spent on care were calculated, taking as a basis, the current minimum wage (MW), updated annually, with the value thus obtained divided by a period of 30 days. The figure obtained was then divided by 8, considering a working day of 8 hours. The result was then multiplied by the number of hours of care dispensed by the caregiver to the patient thereby giving the value of the hours/day. Subsequently, the product was multiplied again to obtain the total monthly and projected annual costs. The calculation used in this study was based on a MW of R$ 678.00 (Brazilian currency), valid until 12/31/2013. All resultant values obtained in Brazilian currency (R$) were subsequently converted into U.S. currency ($) at the exchange rate of R$ 2.36:1 USD on 12/31/2013.

    Dementia severity was obtained by the FAST classification and all patients were stratified into one of three stages: score 1-4="mild"; 5a-5e="moderate" and 7a-7f="severe". The scores on the burden interview lay in the ranges 0-20="little or no burden"; 21-40="mild to moderate"; 41-60="moderate to severe" and 61-88="severe". In this study, the scores corresponding to 0-20="little or no burden", were grouped under the "mild to moderate" rating. The economic classification was obtained according to the sum of the scores of declared items in each household. Thus, rating scores were: 42-46="A1"; 35-41="A2"; 29-34="B1"; 23-28="B2"; 18-22 "C1"; 14-17="C2"; 8-13="D"; 0-17="E" . The ratings "D" and "E" were grouped together in this study. For the final classification, this sum was added to the score corresponding to the declared level of patient education, where scores ranged from 0="illiterate/basic 1 incomplete"; 1="basic 1 complete/basic 2 incomplete"; 2="basic 2 complete/incomplete high school"; 4="complete high school/incomplete college"; 8="complete college". Caregiver education was obtained based on declared years of schooling.

    Statistics. To compare categorical variables between groups, the Chi-square (χ2) test was performed while continuous variables were analyzed by one-way ANOVA, followed by Bonferroni analysis. To investigate correlation between financial burden, dementia severity, and caregiver burden, Spearman's R correlation analyses was performed. The level of significance was set at 0.05. Data were analyzed using the SPSS for Windows 20.0 software package.


    RESULTS

    To date, a total of 93 caregivers have been interviewed. Demographic data on the three groups are shown in Table 1 and reached statistical significance for the variables: education, retirement, patient economic status, relationship to the patient, marital status and residing with the patient. Likewise, the clinical status of the sample - for patients and caregivers - showed significant results on: medical diagnosis, disease progression and comorbidities. There were no statistically significant differences in variables related to caregivers, as shown in Table 2. A greater percentage reduction/loss of productivity was observed among caregivers of patients classified as mild phase, but the total average reduction or loss of working hours was noted in the moderate stage of disease. Average monthly income ranged from 0 to 5 MW with the highest proportion (20.4%) of caregivers declaring a monthly income of 1 to 3 MW, and gross monthly amount of US$ 766.2 (SD ± 933.9) in the mild phase, US$ 825.9 (SD ± 558) moderate phase and US$ 684.5 (SD ± 450.3) in the severe phase, as shown in Table 3. The time spent by caregivers with variables ADL/IADL and supervision showed statistically significant results for the total number of hours spent per day, week and month. Total days spent per month, total cost per month and total cost per year (projection) were also statistically significant. Direct social care costs to the caregiver showed statistically significant results in all selected variables except "other expenses". The total indirect costs/month were $ 1,122.4, $ 1,508.9 and $ 1,644.7, and annual projections were $ 13,468.8, $18,106.8, and $ 19,736.4 US dollars in mild, moderate and severe stages, respectively (Table 4). There was some correlation between financial burden and caregiver burden in the severe stage and in total hours/month with ADL/IADL at the mild stage. Although a statistically significant difference was observed in almost all variables related to caregivers' out-of-pocket expenses, with the exception of "other expenses", these findings were not considered responsible for burden among caregivers. There was a weak positive correlation only for monthly medicine costs, consultations and medical health insurance. Significant, moderate, negative correlations were also found between the hours of care and caregiver burden (Table 5).












    DISCUSSION

    The preliminary results of this study, as expected, showed a significant impact of indirect costs with dementia in Brazil. Findings from recent studies have associated overheads of indirect costs with the advancement of the disease and the present study found the same result.15,17

    Some sociodemographic variables of patients and caregivers were similar to those found in other studies, maybe owing to cultural identities, for example: gender, age, marital status, education, relationship, retirement, economic status and monthly income of patients.5,9,10,11

    Regarding the clinical status of patients and caregivers, some significant disparities were found, including higher prevalence of AD, duration of the disease and the presence of comorbidities in patients, the most prevalent being hypertension, pointing to the importance of primary care actions. Among caregivers, it was noted that their clinical status can change an average of 2-3 years after taking on the role of carer. There was a high prevalence of emotional stress on caregivers, as observed in other studies. Few caregivers were classified as having low levels of stress as compared to other caregivers of patients without dementia. A LA study found a higher frequency of depression in caregivers than non-caregivers of 44% and 27%, respectively,24 with anxiety (96%) and depression (100%) + family dysfunction (26.5%) in 47% of primary caregivers of patients with dementia.25 We found a 38% rate of reports of various diseases in caregivers that started after taking responsibility for the care of their ill relative, with a higher percentage of reports (16%) observed at the moderate stage. The loss or reduction of hours of productivity was found not to increase with severity of the disease and it was noted that greater reduction or loss of formal working hours occurred at mild and moderate stages. This finding may be due to the small sample of patients in the severe phase, but also suggests that the search for medical diagnosis and treatment in the early stages may explain the higher consumption of caregivers hours as well as the reduction or even loss of productivity.26 In the moderate stage, the need for a caregiver generates higher consumption of hours of informal care and expenses related with direct social care costs and our findings corroborate other studies showing increased burden as the disease progresses.11,15,18,27 The reduction or loss of hours of productivity observed at the severe stage can be viewed as the consequence of the high number of hours spent per month associated with the severity of dementia.15

    Perhaps, indirect costs to the caregivers can be minimized by the establishment of pharmacological and non-pharmacological therapies that may promote greater flexibility and allow time for the caregivers to perform other tasks.28 In this regard, awareness and education initiatives can be very useful in low and middle income countries.5 Nevertheless, it should be noted that the average number of working hours reduced or lost per month due to care is high, and the values reached by the calculations can exceed the monthly income of many families, as was shown in this study. A high percentage of caregivers reported income of 1 to 3 MW, and declared income, in some cases, fell below of the amounts estimated for indirect costs. Our estimates showed that these costs exceeded, in some cases, the declared family income at rates of 69% to 106% in the mild stage; 89% to 136% in the moderate stage and 106% to 169% in the severe stage. Recent LA studies have found committed family incomes of 60%,18 61%,15 and 66%-75%.11 The direct social care costs of the caregivers in the present study were greater than the monthly income of some caregivers in some cases, totaling US$ 462.15 at mild, US$ 593.70 at moderate, and US$ 970.40 at severe stages. The higher spending of caregivers seen in the severe stage of the disease is in agreement with the finding of other authors, being attributed to the greater complications observed at later stages.11, 15, 26

    The average hours of care, weekly and monthly, was higher than hours seen in other studies and contributed to a greater caregiver burden than financial burden, suggesting that actions of support and education, as proposed in other studies, should be sought to reduce the burden of caregivers.5,9,10 However, comparison of these results were hampered by methodological differences in LA, lack of stratification of severity of dementia observed and by the fact that only indirect costs were addressed in the present study. Also, an international comparative cost evaluation was not conducted. However, some studies in LA found lower hours of care than that observed in this study.2,11,15,18 In Europe, findings from a study that estimated hours of care stratified by disease severity were similar to this study results, especially at the mild stage of dementia.26 We found average proportion of 29%, 63% and 75% of weekly hours; 45%, 63% and 75% of monthly hours; and a total average days per months corresponding to 82.3%, 98% and 95%, in mild, moderate and severe phases, respectively.

    The high number of hours reported here could be related to exceeding of caregiver limits and not to increased demands for end-of-life care, since a high percentage of patients were at mild and moderate phases.27

    These findings reveal the extent to which these caregivers fail to earn an income owing to premature withdrawal from the labor market, and of the risk of themselves becoming dependent on the health system given that diseases such as diabetes mellitus, depression and hypertension are also diseases with high morbidity, responsible for other NCDs. The lack of social structure has led to greater isolation of individuals that, with no alternatives, are forced to leave their work and life plans, to take care of their sick relative. In some cases, those with no monthly income become dependent on the pension or allowance of the patient or rely on the help of others to ensure survival of the family.29 In Brazil, initiatives include supportive measures and education of professionals and caregivers with some positive results in reducing the burden of care.5,28,30 Further research and multicenter studies to compare the results obtained here are necessary. This small sample showed that the impact of indirect costs with dementia in Brazil may be higher than other previous LA studies. These initial results may make an important contribution to future research about costs with dementia in LA.

    The main limitation of this study was its cross-sectional design. Most studies assessing the direct and indirect costs of dementia in high income countries have involved longitudinal studies. Recent literature on this issue alerts the attention of researchers to the need for systematic actions that focus on early diagnosis and treatment. This systematization of actions has been considered a possible approach for reducing the direct and indirect costs associated with the disease.

    In our milieu, there remains much to investigate and achieve in the sphere of non-communicable diseases Despite the limitations noted , this is the first Brazilian study to perform the monetary calculation of indirect costs associated with dementia, where the next step is to continue the research presented employing an appropriate methodological design.

    Acknowledgements. The author would like to acknowledge the generosity of all participants in helping to make this study a success. The author also gratefully acknowledges the contributions of Dr. Flávio Rebustini for the support provided with the statistical analysis of the data.


    REFERENCES

    1. World Health Organization - WHO - 2012. Dementia - A Public health priority.

    2. Alzheimer's Disease International - ADI - 2012. Alzheimer's Disease Report.

    3. Fondo de Población de las Naciones Unidas - UNFPA 2013 - Índice Global del Envejecimiento.

    4. IBGE - Instituto Brasileiro de Geografia e Estatística - População residente por sexo, e grupos de idade, segundo as Grandes Regiões e as Unidades da Federação pp 84; Brasil - 2010 Sinopse do Censo Demográfico .

    5. Prince M, Acosta D. Ageing and Dementia in developing countries - the work of the 10/66 Dementia Research Group. Int Psychiatry 2006;3:3-6.

    6. Ferri CP. Population ageing in Latin America: dementia and related disorders. Rev Bras Psiq 2012;34:371-374

    7. Wong LLR, Carvalho JA. O rápido processo de envelhecimento populacional do Brasil: sérios desafios para as políticas públicas. Rev Bras Est Pop 2006;23:5-26.

    8. Engelhardt E, Brucki SM, Cavalcanti JL, Forlenza OV, Laks J, Vale FA; Departamento de Neurologia Cognitiva e do Envelhecimento da Academia Brasileira de Neurologia. Diagnóstico da doença de Alzheimer no Brasil - Avaliação Cognitiva e Funcional. Recomendações do Departamento Científico de Neurologia Cognitiva e do Envelhecimento da Academia Brasileira de Neurologia. Arq Neuropsiquiatr 2005;63:720-727.

    9. Graham N. Dementia in low-and middle income countries. Int Psychiatry 2006;3:2-3.

    10. Salas A, Arizaga RL. Dementia Care in Latin America - country profiles from Venezuela and Argentina. Int Psychiatry 2006;3:6-8.

    11. Castro DM, Dillon C, Machnicki G, Allegri RF. The economic cost of Alzheimer's disease: Family or public-health burden? Dement Neuropsychol 2010;4:262-267.

    12. Nitrini R, Bottino CM, Albala C, et al. Prevalence of dementia in Latin America: a collaborative study of population-based cohort. Int Psychogeriatr 2009;21:622-630.

    13. Olesen J, Gustavsson A, Svensson M, Wittchen HU, Jönsson B; CDBE2010 study group; European Brain Council. The economic cost of brain disorders in Europe. Eur J Neurol 2012;19:155-162.

    14. World Alzheimer Report. The Global Economic Impact of Dementia 2010:12-21.

    15. Allegri RF, Butman J, Arizaga RL, et al. Economic Impact of dementia in developing countries: an evaluation of costs of Alzheimer's-type dementia in Argentina. Int Psychogeriatr 2007;19:705-718.

    16. Hurd MD, Martorell P, Delavande A, Mullen KJ, Langa KM. Monetary Costs of Dementia in the United States. N Engl J Med 2013;368:1326-1334.

    17. Wimo A, Reed CC, Dodel R, et al. The GERAS Study: A Prospective Observational Study of Costs and Resource Use in Community Dwellers with Alzheimer's Disease in Three European Countries - Study Design and Baseline Findings. J Alzheimers Dis 2013;36 385-399.

    18. Veras RP, Caldas CP, Dantas SB, et al. Avaliação dos gastos com o cuidado do idoso com demência. Rev Psiq Clín 2007;34:5-12.

    19. McKhann GM, Knopman DS, Chertkow H, et al. The diagnosis of dementia due to Alzheimer's disease; Recommendations from the National Institute on Aging and the Alzheimer's Association workgroup on diagnostic guidelines for Alzheimer's disease. Alzheimers Dement 2011;7:263-269.

    20. Reisberg B, Sclan SG. Functional Assessment Staging (FAST) in Alzheimer's Disease: Reliability, Validity, and Ordinality. Int Psychogeriatr 1992;4:55-69.

    21. Associação Brasileira de Empresas de Pesquisa - ABEP 2013; Critério de Classificação Econômica Brasil; http://www.abep.org

    22. Scazufca, M. Brazilian version of the Burden Interview scale for the assessment of burden of care in carers of people with mental illness. Versão brasileira da escala de Burden Interview para avaliação de sobrecarga em cuidadores de indivíduos com doenças mentais. Rev Bras Psiq 2002;24:12-7

    23. Wimo A, Winblad B, Stöffler A, Wirth Y, Möbius HJ. Resource Utilization and Cost Analysis of Memantine in Patients with Moderate to Severe Alzheimer's Disease. Pharmacoeconomics 2003;21:327;340.

    24. Fisher GG, Franks MM, Plassman BL, et al. Caring for individuals with dementia and cognitive impairment, not dementia: Findings from the Aging Demographics, and Memory Study. J Am Geriatr Soc 2011;59:488-494.

    25. Dueñas E, Martínez MA, Morales B, Muñoz C, Viáfara AS, Herrera JA. Syndrome del Cuidador de adultos Mayores Discapacitados y sus implicaciones psicosociales. Colombia Médica 2006;37:31-38.

    26. Jönsson L, Eriksdotter Jönhagen M, et al. Determinants of costs of care for patients with Alzheimer's disease. Int J Geriatr Psychiatry 2006;21:449-459.

    27. Mitchell SL, Black BS, Ersek M, et al. Advanced Dementia: state of the art and priorities for the next decades. Ann Int Med 2012;156:45-51.

    28. Ferretti CEL, Bertolucci PHF, Minett TSC. Behavior disorders and subjective burden among caregivers of demented patients. Dement Neuropsychol 2007;2:190-195.

    29. Camarano AA. Mulher Idosa: Suporte Familiar ou agente de mudança. Estudos Avançados 2003;17:35-63.

    30. Brodaty H, Green A, Banerjee S, et al. Towards Harmonization of Caregiver Outcome Measures. Brain Aging 2002;2:3-12.










    1. RN, PhD
    2. MD, PhD
    3. MD, PhD Behavioral and Cognitive Neurology Unit, Department of Neurology, Hospital das Clínicas, University of São Paulo, SP, Brazil

    Ceres Eloah L. Ferretti
    Rua dos Vianas, 333/124 Bl 2
    09760-000 São Bernardo do Campo SP - Brazil
    E-mail: cereseloah@gmail.com

    Received August 14, 2014.
    Accepted in final form November16, 2014.
    Disclosure: The authors report no conflicts of interest.

     

    Home Contact