Indirect costs of Schizophrenia in England in 2004 (£ millions)
Mental disorders comprise a wide spectrum of illnesses that are characterized by tremendous disabilities and impairments. In addition to this loss of quality of life for patients, mental disorders entail high costs for public health systems. In recent years, there has been an increasing amount of literature on the economics of mental disorders. Overall, there seems to be evidence indicating a notable prevalence of mental disorders and a sizeable treatment gap, expressed in a large number of patients suffering from one (or more) mental disorder(s) who have been treated insufficiently. The question arises whether the unmet need is due to a general lack of awareness within (national) health and social care systems and a kind of misallocation of resources (supply-side problem) or if the utilization of services is hindered by stigma or exclusion (demand-side problem).
Epidemiologic data is scarce, which is presumably the reason why the suffering of the patients as well as the significance of the economic burden are underestimated. Reliable estimates of costs and benefits associated with mental disorders are needed to ensure health care planning and financing.
The aim of this chapter is to provide a comprehensive review of literature on this subject. The economics of the most frequent and most burdensome mental disorders are discussed. Therefore only the cost-of-illness studies on affective disorders, generalized anxiety disorder, schizophrenia and alcoholism are taken into consideration. In the light of demographic developments reference is also made to mental disorders of the elderly (i.e. dementias). Mental disorders which begin in childhood and adolescence (i.e. hyperkinetic disorders, autism) are also outlined to point out the importance of prevention. Accordingly, both age cohorts will increasingly challenge health care systems. In this chapter the range of costs and the methodological constraints of different cost estimates at the European level are discussed in detail as well as the different kinds of challenges for the Austrian health care system.
Only those publications published from 1994-2014 were included because of the changes in diagnostic criteria. Within this timeframe it can be assumed that diagnoses are based on the ICD-10 and DSM-IV criteria respectively, which enhances comparability between the studies analyzed. Regarding the spatial focus, the current 28 member countries of the European Union are part of the analysis, but special attention is paid to the (limited) data available in Austria.
2. Health economics and mental health
In most OECD countries mental health care is insufficiently integrated in the health care system, which is also reflected in the expenditures for mental health . To date, various methods have been developed and introduced to measure the economic impact of ill-health. With a focus on mental health, the cost-of-illness studies have gained interest in the past decades. In general, cost-of-illness studies provide monetary estimates for the economic burden associated with a disease . Thus, information on the allocation of resources and on the relative importance of a disease can be used for further in-depth analyses or (international) comparison.
Generally, the relevant costs are classified into direct, indirect and intangible costs. Direct costs are the expenses for medical goods and services. Often direct costs are subdivided into direct medical and non-medical costs, where the latter refer to all associated services.
Basically, two broad approaches can be distinguished to assess direct costs, i.e. top down and bottom up. Costs in top down analyses are calculated based on aggregated national data and statistics to obtain an estimate of the (health) economic significance of an illness. In contrast, bottom up analyses estimate costs on the basis of resource consumption at the level of the individual patient.
Indirect costs refer to productivity losses owing to a specific illness. There are two approaches to assess indirect costs: the human capital and the friction costs methods. Within the evaluation of mental disorders, the human capital approach is more common and recommended . The core of this method is the assumption that an economy’s potential productivity is the sum of the output produced by its population in working age over an expected lifetime. In the case of early retirement or premature death, all productivity losses are projected for the whole life span, resulting in high indirect costs for chronic illnesses. 
Suffering, pain and reduced quality of life are also relevant in research on mental health and are summarized as intangible costs. In particular, quantification and monetarization are aggravated by methodological difficulties.
Throughout (mental) health economic studies, the measurement and definition of costs are not consistent. For example, the costs of informal care (i.e. care by members of the family and friends) are often assigned to indirect costs, but can also be assigned to direct non-medical costs. Costs associated with suicide, which are of particular relevance in mental disorders, are hardly taken into account owing to manifold difficulties in valuation.
3. Epidemiology of mental disorders in Europe
The most comprehensive work providing the first epidemiologic and economic data on mental disorders in the European Union is a compilation of recent studies: in a comprehensive review on the costs of disorders of the brain the total costs of 12 selected disorders were estimated at € 386 billion, of which € 240 billion account for mental disorders alone (2004 prices, dementia excluded) . Only those studies including the cost-of-illness data published in the EU-25 member countries and Norway, Switzerland as well as Iceland were selected. In addition, studies based on clinical trials, reviews, quality of life studies and studies dealing with specific treatment forms were excluded. Direct healthcare costs, direct non-medical costs and indirect costs for the following 12 disorders were estimated: affective disorders (depression, bipolar disorders), psychotic disorders (schizophrenia), anxiety disorders (panic disorders, social phobia, special phobias, agoraphobia, generalized anxiety disorder, obsessive compulsive disorder), addiction (illicit drugs, alcohol), dementia, brain tumour, trauma, stroke, epilepsy, multiple sclerosis, Parkinson’s disease, migraine and other headaches. The prevalence of these disorders in 2004 amounted to 27% of the total population covered in the study.
Based on this analysis, a follow-up study was initiated. Using a multi-method approach including literature research, the analysis of epidemiologic data and country-specific expert surveys, the 12 month prevalence of the disorders included in the first report  as well as 14 new disorders for EU-27 plus Norway, Switzerland und Iceland was estimated . Additionally the age group covered was extended to the major mental disorders for children and adolescents (2-17), adults (18-65) and elderly (65+years). Within this study, substance use disorders (alcohol dependence, opioid dependence, cannabis dependence), psychotic disorders (schizophrenia, other psychotic disorders), mood disorders (bipolar disorders, major depression), anxiety disorders (posttraumatic stress disorder, obsessive-compulsive disorder, generalized anxiety disorder, social phobia, specific phobias, agoraphobia, panic disorder), somatoform disorders, eating disorders (anorexia nervosa, bulimia nervosa), childhood and adolescence disorders (pervasive developmental disorders/autism, hyperkinetic disorders/ADHD, conduct disorders), personality disorders (dissocial personality disorder, emotionally unstable personality disorder), sleep disorders (non-organic insomnia, hypersomnia, narcolepsy, sleep apnoea), mental retardation and dementias were ascertained.
As a result, it was estimated that each year 38.2% of the EU population would be affected by a mental disorder, whereas the most frequent disorders are anxiety disorders (14%), insomnia (7%) and major depression (6.9%).
In terms of DALY DALY (“disability adjusted life year”) is a health economic measure, expressing a burden of a disease in the number of years lost due to an illness or disability. One DALY equals one year of life in total health. DALYs are calculated as the sum of years of life lost and the years lost to disability.
DALY (“disability adjusted life year”) is a health economic measure, expressing a burden of a disease in the number of years lost due to an illness or disability. One DALY equals one year of life in total health. DALYs are calculated as the sum of years of life lost and the years lost to disability.
There are also several national cost-of-illness studies available. For instance, the total costs of mental disorders in France were estimated at € 109 billion in 2007 . By using a top down approach, direct health care costs, direct non-medical costs, indirect costs and intangible costs were derived. Within direct health care costs, public psychiatric hospitals had the highest costs of € 6.4 billion while the costs for out-patient care accounted for € 4.7 billion. Direct non-medical costs were estimated at € 6.3 billion, of which € 3 billion were for institutions in the health and social care sector, € 2 billion for allowances, and interestingly also of € 1.3 billion for informal care. In terms of indirect costs, the costs of income compensation accounted for € 4.4 billion and the costs of productivity losses for € 20 billion. Surprisingly, intangible costs, i.e. loss of quality of life, were also assessed, resulting in a loss of 2.2 million QALY QALY (“quality adjusted life year”) measures the quantity and quality of life generated by a health intervention and weights time in different health states.
QALY (“quality adjusted life year”) measures the quantity and quality of life generated by a health intervention and weights time in different health states.
In a study set out to determine the economic burden of mental disorders in Sweden, annual costs were estimated at € 9.4 billion (2001 values) of which € 1.9 billion were direct costs and € 7.5 billion were indirect costs . From a methodological point of view, these findings are based on prevalence rates of mental disorders, the cost-of-illness approach and a top down perspective.
4. Generalized anxiety disorder
The symptoms of generalized anxiety disorder (GAD) comprise tension, worrying and anxiety symptoms  Unless specified differently, all diagnostic criteria used in this chapter refer to ICD-10 guidelines edited by Dilling et al. (8th revision, 2011)
Unless specified differently, all diagnostic criteria used in this chapter refer to ICD-10 guidelines edited by Dilling et al. (8th revision, 2011)
Hoffmann et al.  analyzed 24 studies and identified the human burden, quantitatively expressed in terms of quality of life and role functioning, as well as the economic burden, defined as health care utilization costs and productivity losses. Only studies based on DSM-III-R, DSM-IV or ICD-10 criteria covering the period from 1990 to 2005 were included, using MEDLINE and PsychLIT database. As a result, the economic consequences and individual burden associated with GAD are considerable and comparable with other mental disorders (i.e. other anxiety disorders, somatoform disorders) as well as somatic problems.
Based on patient survey data from Germany, Spain, Italy, France and the United Kingdom, the economic and human burden of GAD were identified . Cost analyses, as well as bivariate and multivariate approaches, showed that patients suffering from GAD have more co-morbidities, resource use and work impairments and a less health-related quality of life than control groups without GAD.
The costs of anxiety disorders in Europe were assessed by utilizing the mental health supplement of the German National Health Interview and Examination Survey, a community sample (n=4181, age=18-65) conducted in 1998/1999 . The mean costs were derived as excess costs (i.e. compared with individuals without an anxiety disorder) per patient. In the case of GAD, the direct cost per patient amounts t o € 1,230 and the indirect costs to € 399, resulting in a total of € 1,629 (2004 prices).
5. Affective disorders
Affective or mood disorders are characterized by a fundamental change in mood and are accompanied by a change in activity levels.
In 2005, the costs of depression in Sweden from a prevalence based top down perspective amounted to € 3.5 billion, with indirect costs of € 3 billion and direct costs of € 500 million . This study also estimated the intangible costs of suffering based on the QALY losses of patients undergoing treatment (€ 4.1 billion) and for those patients who do not receive any treatment (€ 6.1 billion).
Another study based on a similar methodological approach estimated the total costs for depression at £ 9 billion (2000 values) in England, where direct costs constitute only a minor share of £ 370 million . As part of the “Epidemiology of Mental Disorders (ESEMeD) project“, a prevalence based bottom up approach was employed by Friemel et al. to assess the direct costs of depression in Germany, which amounted to € 1.6 billion in 2002 .
Berto et al  analyzed the costs of depression based on a review of seven studies. According to their findings, depression imposes a remarkable burden on society, which led to direct and indirect costs of $ 43.7 billion in the US as well as of £ 417 million in the UK in 1990. It is interesting that 5 out of 7 studies indicated that in terms of direct costs hospitalization incurs the most costs while medication accounts for only a minor share. The economic burden is high owing to the chronicity, early onset and high prevalence of depression to be found not only among the working population but also in general .
5.2. Bipolar disorders
Recently, bipolar disorders in the EU25 and Switzerland, Norway and Island were analyzed. Only studies published after 1980 that were based on DSM-III-R, DSM-IV or ICD-10 criteria were considered. Epidemiologic samples in the clinical population or community, as well as studies using structured or standardized diagnostic interviews, were included in the study . Thus, 14 studies carried out in 10 countries revealed that the 12-month prevalence of these disorders lies within the range of 0.5-1.1%. Another interesting result was that there are only few studies available concerned with the disability and treatment of bipolar disorders. In comparison with other mood disorders, substance use disorders or anxiety disorders, people suffering from bipolar disorders are characterized by a higher level of disability with regard to severity and duration. In addition these patients also have higher productivity losses expressed in absenteeism. The data on treatment and the utilization of health services are scarce. This might be owing to the fact that bipolar disorders are rather rare. However, co-morbidity with other mental disorders, as well as somatic diseases, is high.
The annual societal costs of bipolar disorders in the UK were assessed with the help of health care and statistical databases, and amounted to a total of £ 2.06 billion in 2001/2002 . This estimate includes £ 199 million direct health care costs, £ 86 million direct non-health care costs and £ 1.77 billion indirect costs. In a comparable way, Runge et al analyzed German health insurance data and estimated the annual societal costs of € 5.8 billion (2002 prices) . Indirect costs account for € 5.7 billion, direct costs for € 138 million.
In both studies, bipolar disorders implied a substantial economic burden and the largest share of direct costs was for inpatient treatment (35% in UK; 60% in Germany). In addition, indirect costs exceeded direct costs several times over.
A recent review analyzed systematically 22 cost-of-illness studies . Only studies published since 2000 and meeting 20 elaborated quality criteria were selected with a focus on the cost of illness data for bipolar disorders. Despite the fact that all of the studies reviewed assessed the major costs associated with bipolar disorders, the comparison of estimates was impeded by the plurality of study outcomes on the national and international levels.
Fajutrao et al (2009)  carried out a systematic literature review using Medline, Embase and Biosis as well as health technology assessments and treatment guidelines. The analysis of 25 studies dealing with epidemiology, costs and patient related issues (e.g. employment, disability) of bipolar disorders in Europe (i.e. United Kingdom, Sweden, Spain, Germany, France and Italy) emphasises the underestimation of this long-term disorder and high economic burden both in terms of direct and indirect costs.
Schizophrenia is a chronic and highly disabling mental disorder characterized by thought disorders, hallucinations and delusions (positive symptoms) as well as apathy, incongruity of emotional responses and paucity of speech (negative symptoms) . There is a considerable amount of literature in which the burden of schizophrenia, together with the interrelated dimensions of cognitive functioning, quality of life, stigma and also the burden for caregivers is discussed   .
There have been some controversial discussions on mortality and associated risk factors . Life expectancy in the light of cardiovascular diseases  was subject to studies as well as risk factors and suicide rates . To sum up, the causes of mortality in patients with schizophrenia are unnatural deaths, cardiovascular diseases, respiratory diseases and cancer. However, it has been recognized only recently that natural causes are very often the reason for mortality .
The costs associated with this disease are high and wide ranging because of the burden on the patients per se, relatives who care for them and society at large . Some analysts  have attempted to draw fine distinctions between direct medical and direct non-medical costs, the latter consist of informal care costs. In their prevalence based study on the social costs of schizophrenia in Spain a total of € 1.97 billion (2002 prices) was calculated, of which 53% were direct medical costs (inpatient and outpatient care, medication) accounting for 2.7% of the total public health expenditure.
A notable example of a prevalence based bottom up study provides a differentiated consideration of the costs in 2004/2005 in England : taking into account various populations (private households, residential institutions, prisons, the homeless) the total costs of schizophrenia were £ 6.7 billion. Only £ 2 billion were spent for direct treatment and care costs, but £ 4.7 billion were indirect costs as summarized in the following table.
|Lost productivity of patients||3 400|
|Private expenditures and informal care||615|
|Lost productivity of carers||32|
|Administration of benefit payments||14|
|Criminal justice system||1|
Similarly, studies on alcohol abuse vary considerably in estimating the burden on individuals and society. In the past decade, alcohol and other substance use disorders have gained attention as one of the major public health problems. . Neither prevalence nor costs attributable to addiction are easy to quantify . A specific problem is causality, whether health issues are a consequence of alcohol or some other cause . Whatever the case, co-morbidity with other mental disorders  is frequent and there are also causal links to physical problems . Another problem is that the diagnosis and differentiation in the forms of alcohol abuse to be found in studies on the subject range from acute intoxication, harmful use, dependence and withdrawal state . Alongside with increased morbidity and co-morbidity, alcohol is associated with violence  and crime . With regard to the prevalence of alcohol abuse disorders, the median 12-month prevalence of alcohol dependence alone in the EU 25 and Norway is 6.1% for the male and 1.1% for the female populations, respectively .
Recent evidence suggests that alcohol dependence is even more expensive than alcohol abuse, if health costs per patient are considered . In 2002, a prevalence based Swedish study estimated the societal costs resulting from alcohol consumption at SEK 29.4 billion or 1.3% of GDP . By far the largest share of the total costs were the indirect costs accounting for SEK 18.4 billion. A German study calculated a value of 1.16% of GDP in 2002, based on the concept of attributable fractions and prevalence . This result corresponds to the total costs of € 24.4 billion, including the direct costs of € 8.44 billion and indirect costs of € 15.96 billion. In both studies no specification of alcohol abuse in terms of a mental disorder according to diagnostic manuals is available and the research focus is on alcohol consumption in general. Thus, the potential positive effects (i.e. protective health effects) were discussed too, but presented separately.
8. Dementia and mental health of the elderly
As a consequence of demographic developments the prevalence of mental disorders in old age is assumed to increase . But, so far, little is known about the health care situation of the elderly with mental disorders apart from those with those with dementia and depression . The various forms of dementia are a major health problem for the older generation in Europe. According to ICD-10, various types can be distinguished. Alzheimer’s disease is the most frequent form of dementia, but also vascular dementia caused by a stroke (cerebrovascular accident CVA) is very common. With regard to the prevalence of Alzheimer in those who are over 65 years of age, the rate ranges between 5.9% and 9.4%, depending on age, sex and severity . A recent review of 15 cost-of-illness studies based on patient-level data, showed that the median annual costs amounted to € 28,000 (2005 values) which were solely for the care of patients with Alzheimer’s disease  f. From a societal perspective, the annual baseline costs of dementia in Ireland were estimated at over € 1.69 billion in 2010 . A combination of bottom up and top down approach was adopted. Informal care accounts for 48% of the total costs, residential long-stay care for 43%, while for formal social and health care it is for 9%. For Hungary, the costs of dementia were assessed by a cross-sectional non-population-based study , resulting in total annual costs for the demented population of € 846.8 million for 2010. The highest proportion of these costs is attributable to direct costs (55%), followed by informal care (36%) and indirect costs (9%).
The costs for dementia for the EU-27 amounted to € 160 billion in 2008, with a range from € 111 to € 168 billion , based on a cost model developed upon 14 cost-of-illness studies reviewed.
9. Child and adolescent mental health
The prevalence of child and adolescent mental disorders has increased . The most common mental disorders in childhood and adolescence are
The economic burden of mental disorders with onset usually occurring in childhood and adolescence is enormous. The vast majority of literature on ADHD is based on US data, but few European studies are available. From the results of the analysis of German statistical data, medical costs associated with hyperkinetic disorders alone amounted to € 142 million in 2002, which is a first estimate and a rather conservative one . A comparison of children with and without ADHD in Belgium (Flanders) showed that the families and patients are faced with a high (psycho)social and economic burden : based on a questionnaire sent to a non-random sample, the private costs borne by parents amounted to € 533 per year for the parents, and the public costs came to € 779 in 2002. These costs are six and twice as high, respectively, than for children who do not suffer from ADHD. The results of a review of European evidence on ADHD were applied to the case of the Netherlands , where the average total costs ranged between € 1,041 and € 1,529 million, depending on the application of high or low level scenarios (2012 prices). The lion’s share of the costs at € 648 million was allocated to education including additional school lessons and costs for the services of educational psychologists and other health care professionals. The productivity losses of the members of the family accounted for € 143-€ 339 million, health care costs for the members of the family amount to € 161 million. Patient health care costs ranged from € 84-€ 377 million and social care costs were estimated at € 4.3 million.
Conduct disorders are common too, but prevalence rates vary owing to diagnostic difficulties and to which subjects and/or populations are included in the study . The first German study on the costs of conduct disorders was based on a retrospective analysis of data from a statutory health insurance institution for the period 2006-2009 and resulted in annual mean expenditures of € 2,632, which are 3.8 times higher than those for a matched control group . From a multicentre controlled trial of groups taking over the role of a parent to deal with antisocial behavior in childhood a sample was drawn to estimate the costs of anti-social behaviour in the UK : the annual mean costs of health, voluntary and educational services were estimated to be a £ 1,277, the costs for members of the family, resulting from absence from work, additional repair as well as household tasks were £ 4,637 (2002/2003 prices).
The spectrum of autism disorders was analyzed in two British studies: while Knapp et al. estimated the annual costs, based on prevalence and different data sources for children of different age groups to be £ 2.7 billion and for adults to be £ 25 billion separately (2005/2006 prices) , Barett et al undertook a randomized controlled trial of a communication intervention which focussed on autism in children under 5 years of age and used the prevalence rates of the former study. Thus, the estimated service costs for this subgroup amounted to £ 109 million and the wider societal costs at £ 130 million per annum .
Based on the British Child and Adolescent Mental Health Surveys, a study on the economic burden of children aged 5-15 with a conduct, hyperactivity or emotional disorder (ICD-10) estimated the national costs for the health, education and social care services at £ 1.47 billion in 2008, the largest share of which was for the education services .
10. The Austrian case
The Austrian welfare system can best be described as corporatist and conservative because of the dominance of social insurance and the strong linkage to paid employment . Health, as a dimension of social policy, incurs the second largest proportion of expenditure and is primarily funded by health insurance contributions . In 2012, the total health care expenditures (public and private) amount to € 34,067 million, which corresponds to 11.1% of GDP . A total of 22 social security institutions and the Main Association of Austrian Social Security Institutions (i.e.
10.1. Mental health care
In Austria, there is no national mental health care system, but there are reforms and initiatives that are aimed at achieving international targets, such as deinstitutionalization, decentralization of services and equity of mental and somatic illnesses . Because of Austria’s federal structure the efforts made by the nine federal provinces in terms of data collection and availability at the level of provinces differ. Thus, the most recent psychiatry report including information on inpatient and outpatient care deals only with the situation in the province of Vorarlberg . Within the last 5 years, besides Vorarlberg, only Styria  published up-to-date information on the provision and utilization of services regularly. The last national psychiatry report dates back to 2004 , but the Austrian Health Care Structure Plan, as the key planning instrument in the health care sector, includes psychiatric care on all levels of provision .
The Main Association of Austrian Social Security Institutions also published a national strategy on mental health . Within this strategy, 25 targets are established that can prevent illness, improve treatment and reduce disability associated with mental disorders. Data on the history of suicide rates and spatial, socio-economic as well as gender patterns is also available . In addition, a national programme on suicide prevention was adopted recently . A detailed report on alcohol consumption, alcohol related inpatient health service utilization, morbidity and mortality is available for Austria .
The federal organisation of health care also necessitates different financing structures of mental health care services . The system of financing psycho-social services is complex. For instance, the model for funding psychotherapy can illustrate the juxtaposition of different possibilities. Psychotherapy can be financed privately, which guarantees the freedom of choice of an adequate psychotherapist. However, based on the principle of benefits in kind, health insurance covers the costs for psychotherapy in total only under specific conditions, but these are limited and waiting lists are long. Finally, a mixed form is the subsidy or co-payment through health insurance .
Particularly children and adolescents are a vulnerable but neglected group within the care system . Insufficiencies in the treatment structures are evident in the inpatient and outpatient sectors as well as in the sector of registered doctors, where the respective WHO indicators are not met . Inpatient treatment is predominant, while psychotherapy and specialized ambulatory care practically do not exist without additional costs for those caring for the patient .
10.2. The costs of mental disorders in Austria
The costs of mental disorders are huge as the previous sections on selected disorders have shown. Although there have been a few recent studies on this subject, Austrian data is scarce. Based on statutory health insurance data, about 9% of the Austrian population or 900,000 (insured) Austrians made use of the health services to receive treatment for mental illness in 2009 .The associated costs in terms of medication, inpatient treatment, psychotherapy, physician services, psychiatric and psychological services, as well as sick pay were estimated at € 790-850 million. This estimate excludes rehabilitation costs as well as disability pensions, where it is important to note that mental disorders are the most common cause for new disability pension claims.
Wancata et al.  calculated the costs of 12 mental and neuropsychiatric disorders of the brain as part of the first European cost study  . Thus, direct medical costs and direct non-medical costs were derived. Indirect costs were estimated based on the human capital approach. Anxiety disorders, affective disorders (bipolar disorders and depression), addiction (alcohol and illegal drugs), migraine, psychotic disorders, dementia, epilepsy, Parkinson’s disease, stroke (cerebrovascular accident), multiple sclerosis, brain tumours and brain trauma were analyzed. With regard to the 12 month prevalence, in 2004 anxiety disorders were the most prevalent disorders (847,622 cases), followed by affective disorders (479,091 cases) and addiction (194,795 cases). In terms of costs per case and per mental disorder, the estimates are based on data from the review on the European level: dementia caused the highest costs at € 13,635 followed by psychotic disorders at € 9,487 and affective disorders at € 5,138 (2004 prices). Taking the Austrian population as a whole, the costs for these 12 disorders amounted to € 8.8 billion, whereas 47% are indirect costs (productivity loss), 37% are direct non-medical costs and 17% are direct medical costs. The authors emphasize that the results must be taken with caution, because the values were extrapolated from averaged and adjusted data taken from other studies owing to the lack of epidemiologic and cost data, respectively. Bearing these limitations in mind, the estimates presented should serve only as a first classification (Table 2).
|Affective disorders||617||----||1 845||2 462|
|Addiction||260||40||1 043||1 444|
|Psychoses||1 095||204||----||1 299|
Costs associated with schizophrenia were analyzed as part of a comprehensive report on this mental disorder in Austria . The most important finding was that there are major gaps in the knowledge and data on this subject. In a short international survey of the studies available, the differences given in the direct and indirect cost estimates on account of the specific characteristics of the underlying health systems and thus of the treatment and care programs, are significant. With regard to the Austrian case, a search in Medline database brought to light one article which dealt with the burden that not only those with this disorder also their families have to bear, respectively. In Austria only few health care service data are recorded directly related to a diagnosis, which is a prerequisite for an appropriate application of cost-of-illness studies. For instance, inpatient care is filed related to the diagnosis, but sick-leaves and prescriptions are not documented according to ICD-10 criteria. Thus, a collection of diagnosis-based data for all health and care services throughout Austria is not feasible, which makes it difficult to obtain statements on the current size and burden of schizophrenia. Despite these limitations, the data from the Main Association of Austrian Social Security Institutions, from the Upper Austrian regional health insurance fund (i.e. O
A recent cost benefit analysis suggests that alcohol abuse disorders incure high costs for Austria’s public health system. As a result, the costs outweigh the “benefits” (i.e. tax revenues) at the rate of 0.25% of GDP (i.e. € 737.9 million, 2011 prices) .
At the European level, Austria was also part of the updated review on costs of disorders of the brain in the EU-27 countries . Estimates for selected mental disorders in 2010 are shown below (Table 3). Taking into account that these estimates are highly aggregated and partly based on extrapolation, the results may be classified as first ranges as it is given that primary data in Austria is insufficient.
|Anxiety disorders||1 568|
|Child/ Adolescent mental disorders||425|
|Mood disorders||2 253|
|Psychotic disorders||1 961|
One may suppose that the blind spots in mental health care research are negligible.. But in view of the limitations in methodologies adopted for the estimates, both with regard to the prevalence of mental disorder and the costs they incur, the conclusiveness of the results may not be given (as indicated by most authors).
When it comes to the economic evaluation of mental disorders, suicidal behaviour and suicide give rise to controversy. On the one hand, it can be argued that suicide must be included in cost analyses in terms of lost productivity owing to premature mortality. On the other hand, suicide attempts result in medical costs. Some authors even discuss the potential savings if a suicide is carried out as treatment is no longer required and pension benefits and care costs are reduced . However, suicide has been excluded or described only qualitatively in most of the recent studies.
Another key aspect is co-morbidity-whether with other mental disorders or somatic illnesses-which can be considered only insufficiently in the studies and approaches available. Multiple co-morbidities are common in patients suffering from mental disorders. Thus, the burden might have been underestimated. A rather sensitive matter is the consideration of criminal justice costs. Establishing a cause-effect link is difficult, but it is a fact that stigmatization and discrimination are interrelated. Stigmatization may also be a reason why patients do not seek any treatment at all. It is assumed, in most of the studies, that a high number of persons with mental disorders remain untreated. This treatment gap also infers that current cost estimates might be too low.
The cost estimates presented show that the burden, both for society and individuals, is tremendous. However, the estimates can be classified as conservative. All of the studies indicate that the indirect costs are an even larger burden than the direct costs incurred by making use of the health services. There are, however, also studies in which only the direct costs for health care systems are estimated. Only one study estimated the intangible costs in monetary terms . Throughout the studies, the costs and cost categories are not applied in a consistent way, since there are no international standards. The comparison of cost estimates, especially in the case of studies utilizing the top-down approach, may be hindered by the presence of heterogeneous public health systems as well. Thus, the different systems of data collection, funding of health and social services, categorizing and grouping of medical and psycho-social services may account for different study outcomes. However, the findings of the cost-of-illness studies are summarized below (Table 4).
|500||3 000||3 500||2.4|
|370||8 630||9 000||n.a.|
|Prevalence based, bottom up||1 600||1 600||0.9|
|Bipolar disorders|| (2001)||UK|
|199||86||1 770||2 060||n.a.|
|Health insurance data, statistics||138||5 700||5 800||0.08|
|Prevalence based||1 044||926||1 970||2.4|
|Prevalence based, bottom up||2 000||4 700||6 700||n.a.|
|Alcohol|| (2002)||Sweden SEK||Prevalence based||10 987||18 394||29 400||5.8|
|Prevalence based, attributable fractions||7 064||1 377||15 958||24 398||3.9|
To sum up the cost of illness part of this chapter, the following table presents the total cost estimates converted into Euros (2013 values). As already indicated above, a comparison of single cost estimates is hindered by several factors. However, the scale of the economic burden of selected mental disorders is apparent.
| (2005)||Sweden||3 948||413|
| (2000)||England||15 116||n.a.|
| (2002)||Germany||*1 934||24|
| (2001)||UK||3 434||54|
| (2002)||Germany||7 012||85|
| (2002)||Spain||*2 689||58|
| (2004)||England||10 733||n.a.|
| (2002)||Sweden||3 816||399|
| (2002)||Germany||29 496||360|
The relevance of mental health in specific population groups has been outlined. Dementias in the elderly population are a challenge to the health and social care systems, as life expectancy and prevalence have increased. The role of informal care is striking, raising the question how relatives can be supported faced with the burden of long term care and how care should be organised and financed respectively in times of limited resources.
With regard to the mental health of children and adolescents, the studies that have been discussed emphasize not only the burden on the patients, but also on the members of their families and carers.
A high share of the costs related to a child’s mental disorder is borne by the parents. The health care and social care sector are affected in terms of costs, but in particular the educational services sector is stretched. Associated problems, such as poor education in adolescence, imply a worse socio-economic status and related adverse effects in adulthood .
Finally, the case of Austria illustrates that national cost data and epidemiology measures are scarce and scattered, impeding general statements on the current state of mental health of the population. On the one hand, cost data of several health insurance institutions indicate the burden of mental disorders in terms of the utilization of medical resources, health services as well as the impact on the number, duration and costs of taking sick-leave. Despite data insufficiencies, these cost estimates provide an initial overview of the importance of mental disorders at the societal level. On the other hand, the cost of illness information based solely on national primary data is currently not available, and thus prevents a more profound analysis of the role of specific mental disorders in the social and health care system.
Collectively, the studies mentioned in this review outline the critical role of mental health in European public health systems in terms of the provision of proper treatment as well as prevention programmes. Analyses of the single cost-of-illness studies have shown that estimates are often based on extrapolated data. Assumptions with regard to the epidemiology of a specific mental disorder affect study outcomes inevitably. The need for research and concerted action in mental health seems to be apparent. Appropriate data and health economic studies would lead to more informed decisions when it comes to the allocation of scarce resources in the health care system.
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- DALY (“disability adjusted life year”) is a health economic measure, expressing a burden of a disease in the number of years lost due to an illness or disability. One DALY equals one year of life in total health. DALYs are calculated as the sum of years of life lost and the years lost to disability.
- QALY (“quality adjusted life year”) measures the quantity and quality of life generated by a health intervention and weights time in different health states.
- Unless specified differently, all diagnostic criteria used in this chapter refer to ICD-10 guidelines edited by Dilling et al. (8th revision, 2011)