Making the case for consultation-liaison psychiatry: Issues in cost-effectiveness analysis

There is an increasing need to rationally allocate scarce resources to improve the efficiency of health care and reduce costs. Evidence suggests that consultation-liaison psychiatry has important clinical and economic benefits. This article defines cost-effectiveness and cost benefit analyses, describes basic principles for CEA and in that context critiques recent literature relevant to consultation-liaison psychiatry, and discusses potential contributions and dangers that such studies might offer. There is a need within the health care field for systematic and sophisticated decisions by policy makers. Well designed and comprehensively analyzed studies of the cost-effectiveness of consultation-liaison programs will not only contribute toward advancing the field of consultation-liaison psychiatry but also toward informing the decisions of health policy makers.     

Service utilization and cost of community care for discharged state hospital patients: a 3-year follow-up study.

OBJECTIVE: This study examined the mental health service utilization and costs of 321 discharged state hospital patients during a 3-year follow-up period compared with costs if the patients had remained in the hospital. METHOD: The study subjects were long-stay patients discharged from Philadelphia State Hospital after 1988. A longitudinal integrated database on all mental health and medical services reimbursed by Medicaid and Medicare as well as state- and county-funded services was used to construct service utilization and unit cost measures. RESULTS: During the 3-year period after discharge, 20%-30% of the patients required rehospitalization an average of 76-91 days per year. The percentage of rehospitalized patients decreased over time, but the number of hospital days increased. All of the discharged patients received case management services, and a majority also received outpatient mental health care (66%-70%) and residential services (75%) throughout the follow-up period. The total treatment cost per person was approximately $60,000 a year after controlling for inflation, with costs rising slightly over the 3-year period. The estimated cost of state hospitalization, with the use of 1992 estimates, would have been $130,000 per year if the patients had remained institutionalized. CONCLUSIONS: This analysis suggests that most former long-stay patients are able to live in residential settings while receiving community outpatient treatment and intensive case management services at a reduced cost. There is no indication of cost shifting from the psychiatric to the health care sector; however, some cost shifting from the state mental health agency to the Medicaid program has occurred, since most psychiatric hospital care now takes place in community hospitals.     

Shifting to outpatient care? Mental health care use and cost under private insurance.

OBJECTIVE: Concern over rising health care costs has put pressure on providers to reduce costs, purportedly by reducing inpatient care and increasing outpatient care. METHOD: Inpatient and outpatient claims were analyzed for adult users of mental health services (180,000/year on average) from a national study group of 3.9 million privately insured individuals per year from 1993 to 1995. Costs and treatment days per patient were compared across diagnostic groups and stratified by whether patients were hospitalized. RESULTS: Inpatient mental health costs fell $2,507 (30.4%) over the period, driven primarily by decreases in hospital days per patient per year (19.9%), with smaller changes in the proportion of enrollees who received inpatient care (increase of 0.8%) and a decrease in per diem costs (9.1%). Outpatient mental health costs also declined over the period, falling 13.6% for patients also using inpatient services and 14.6% for patients receiving only outpatient care. Patients whose primary diagnosis was mild to moderate depression saw the largest decreases in inpatient cost per patient (42.8%); those diagnosed with schizophrenia experienced the smallest decrease (23.5%). For patients using outpatient services only, those diagnosed with substance abuse experienced the largest decrease in costs (23.5%); those diagnosed with schizophrenia experienced the smallest decrease (8.6%). CONCLUSIONS: Substantial cost reductions for mental health services are primarily a result of reductions in inpatient and outpatient treatment days. Declines in inpatient service use were not accompanied by increases in outpatient service use, even for severely ill patients requiring hospitalization. Managed care has not caused a shift in the pattern of care but an overall reduction of care.     

General principles in child liasion consultation service: a literature review

Consultation-liaison psychiatry emerged in the late thirties as a bridge between body and mind splitting of medical care. Setting-up of consultation-liaison services in general hospitals began some years later and is still developing in many countries. Paediatric consultation-liaison services share some general characteristics with those for adults, but others are more specific. Different models of child consultation-liaison services have been described, such as their organization in relation to the specific characteristics of the ward (surgical, intensive care units, etc.) and to the resources provided. This paper describes the general basis of the organization of a child consultation-liaison service. The specific characteristics needed for working with children are emphasized.     

Psychosocial services for AIDS patients in the general hospital

Ninety consecutive non-repeating hospital admissions of patients with AIDS were studied. The rates of psychosocial service utilization were quite high for consultation psychiatry (24.4%), social work (42.2%), and home care (discharge planning) nursing (24.4%). The presence of psychiatric co-morbidities and social needs were associated with increased length of stay. In addition, psychiatric co-morbidities were associated with increased charges for pharmacy and laboratory.     

Cost-effectiveness of systematic depression treatment for high utilizers of general medical care

BACKGROUND: Expanding access to high-quality depression treatment will depend on the balance of incremental benefits and costs. We examine the incremental cost-effectiveness of an organized depression management program for high utilizers of medical care. METHODS: Computerized records at 3 health maintenance organizations were used to identify adult patients with outpatient medical visit rates above the 85th percentile for 2 consecutive years. A 2-step screening process identified patients with current depressive disorders, who were not in active treatment. Eligible patients were randomly assigned to continued usual care (n = 189) or to an organized depression management program (n = 218). The program included patient education, antidepressant pharmacotherapy initiated in primary care (when appropriate), systematic telephone monitoring of adherence and outcomes, and psychiatric consultation as needed. Clinical outcomes (assessed using the Hamilton Depression Rating Scale on 4 occasions throughout 12 months) were converted to measures of "depression-free days." Health services utilization and costs were estimated using health plan-standardized claims. RESULTS: The intervention program led to an adjusted increase of 47.7 depression-free days throughout 12 months (95% confidence interval [CI], 28.2-67.8 days). Estimated cost increases were $1008 per year (95% CI, $534-$1383) for outpatient health services, $1974 per year for total health services costs (95% CI, $848-$3171), and $2475 for health services plus time-in-treatment costs (95% CI, $880-$4138). Including total health services and time-in-treatment costs, estimated incremental cost per depression-free day was $51.84 (95% CI, $17.37-$108.47). CONCLUSIONS: Among high utilizers of medical care, systematic identification and treatment of depression produce significant and sustained improvements in clinical outcomes as well as significant increases in health services costs.     

Expansion of the consultation-liaison psychiatry paradigm at a university medical center: integration of diversified clinical and funding models

The perspective of the contemporary Consultation-Liason Service (CLS) psychiatrist is increasingly one of consultant to medical and surgical colleagues in models other than inpatient medical and surgical units. Simultaneously, the need for a clinically and educationally robust inpatient CLS persists despite funding pressures. The University of California, Davis Medical Center Department of Psychiatry has made use of creative organizational and financial models to accomplish the inpatient CLS clinical and educational missions in a fiscally responsible manner. In addition, the department has in recent years expanded the delivery of psychiatry consultation-liaison clinical and educational services to other models of care delivery, broadening the role and influence of the CLS. Several of the initiatives described in this paper parallel an overall evolution of the practice of consultation-liaison psychiatry in response to managed care influences and other systems pressures. This consultation-liaison paradigm expansion with diversified sources of funding support facilitates the development of consultation-liaison psychiatry along additional clinical, administrative, research, and educational dimensions. Other university medical centers may consider adaptation of some of the initiatives described here to their institutions.     

La psychiatrie de liaison. Quelle actualité, quelles perspectives ?

The author addresses three key issues concerning the state of art and the future of consultation-liaison psychiatry. In the context of medico-economic constraints, it is important both to be provided with epidemiological arguments on the prevalence of psychiatric comorbidities in medically ill and their impact on health and sanitary costs, and to seize the opportunity to upgrade consultation-liaison psychiatry, especially through correctly coding of discharge summaries, taking into account such comorbidities, given their impact on hospital receipts. Screening for depressive disorder in medicine remains a priority for consultation-liaison psychiatry. Epidemiology has consistently shown the prognostic value of such symptoms, especially in the cardiovascular field. The relationship between depressive symptoms and cognitive hostility deserve to be better taken into account and can guide the type of follow-up. A growing literature has been devoted to the links between alexithymia, emotional awareness, somatic vulnerability. Several examples are given of the operational nature of these concepts, based on experimental studies, and paths are suggested that open to better understand the links between alexithymia and empathic ability of the patient, but also between empathic ability of the caregiver and therapeutic alliance. These concepts, which refer more to medical psychology than to psychiatric nosography, make the richness of the field of consultation-liaison psychiatry.     

Recent research developments in consultation-liaison psychiatry

With the major changes in health care and general hospital practice in the last decade, practice and research in consultation and liaison psychiatry have also changed dramatically. The authors present a selected review of recent advances and implications for five important topics in consultation-liaison research: diagnosis, disease mechanisms, biologic treatments, health services, and psychosocial treatments for medical disorders.     

Service costs of caring for adolescents with mental illness in a rural community, 1993-2000

OBJECTIVE: Costs of treating child psychiatric disorders fall on educational, primary care, juvenile justice, and social service agencies as well as on psychiatric services. The authors estimated multiagency mental health costs by integrating service unit costs with utilization rates in an 11-county area. Using psychiatric diagnoses made independently of service use records, the authors calculated costs across agencies as well as the extent of unmet need for psychiatric care. METHOD: Annual parent and child reports were used to measure mental health care needs and units of service across 21 types of settings for the population-based Great Smoky Mountain Study sample of 1,420 adolescents from ages 13 to 16. Unit costs for services were generated from information from service providers and records. The authors calculated costs overall, costs by type of service, and costs by diagnosis. RESULTS: Average annual costs per adolescent treated were $3,146. Juvenile justice and inpatient/residential facilities accounted for well over half of the total costs. Costs for youths with two or more diagnoses were twice as much as costs of those with a single disorder. Among adolescents with service needs, 66.9% received no services. Public health insurance was associated with higher rates of specialty mental health care than either private insurance or no insurance. CONCLUSIONS: Annual costs across all services were three to four times greater than recent health insurance estimates alone. Many costs for adolescents with mental health problems were borne by agencies not designed primarily to provide psychiatric or psychological services. Only one in three adolescents needing psychiatric care received any mental health services.     

Estimated cost of treating myasthenia gravis in an insured U.S. population

Introduction: In this study we estimated the costs paid by U.S. health plans for treating myasthenia gravis (MG) in 2009 and determined the major cost drivers. Methods: One hundred thirteen MG patients were matched by propensity scores with 339 non‐MG patients from a comprehensive health‐care insurance database. The mean annual costs paid by the health plan for treating MG, costs by place of service, and costs for intravenous immunoglobulin (IVIg) and plasma exchange were determined. Results: Mean annual costs paid by the health plan per MG patient were $20,190 (SEM $4,763) and costs attributable to treating MG were $15,675. Home health services accounted for 23% of MG patient costs and represented almost exclusively IVIg infusion costs. Six MG patients had a total of 136 outpatient IVIg infusions at an average annual cost of $109,463 ± $57,303. Conclusions: The estimated annual health plan paid costs for treating MG were $15,675. Home health services represented 23% of MG patient costs, largely driven by IVIg administration. Muscle Nerve, 2012     

Cost-Effectiveness of Individual Placement and Support Compared to Transitional Work Program for Veterans with Post-traumatic Stress Disorder

Post-traumatic stress disorder (PTSD) leads to significant disability, unemployment, and substantial healthcare costs. The cost-effectiveness of vocational rehabilitation (VR) interventions is important to consider when determining which services to offer. This study assesses the cost-effectiveness and return on investment of Individual Placement and Support (IPS) compared to transitional work (TW) programs. Employment outcomes from a multisite randomized trial comparing IPS to TW in military veterans with PTSD (n?=?541) were linked to Veterans Health Administration (VHA) archival medical record databases to examine the comparative cost-effectiveness and return on investment. Effectiveness was defined as hours worked and income earned in competitive jobs. Costs for VR, mental health, and medical care and income earned from competitive sources were annualized and adjusted to 2019 US dollars. The annualized mean cost per person of outpatient (including vocational services) were $3970 higher for IPS compared to TW ($23,245 vs. $19,276, respectively; P?=?0.004). When TW income was included in costs, mean grand total costs per person per year were similar between groups ($29,828 IPS vs. $26,772 TW; P?=?0.17). The incremental cost-effectiveness analysis showed that while IPS is more costly, it is also more effective. The return on investment (excluding TW income) was 32.9% for IPS ($9762 mean income/$29,691 mean total costs) and 29.6% for TW ($7326 mean income/$24,781 mean total costs). IPS significantly improves employment outcomes for individuals with PTSD with negligible increase in healthcare costs and yields very good return on investment compared to non-IPS VR services.

     

Introduction: research at the interface of medicine and psychiatry

Linkages between psychiatry and other medical specialties have become increasingly evident over the past decade. Reinstatement of the medical internship for psychiatric trainees, expansion of psychiatric liaison services, growth of general hospital psychiatric units, determination of the extensive role served by nonpsychiatric physicians in providing mental health care, and research evidence of the economic benefits of incorporating mental health services in general health settings all have served to break down artificial boundaries between mental health and general health concerns. The psychiatric consultation-liaison service initiated in 1981 by the NIMH at the NIH Clinical Center in Bethesda has afforded opportunity for numerous collaborative research projects with clinical investigators of various categorical disease programs. In addition to offering new etiological insights into psychiatric and general medical illnesses, the work described in this symposium promises to move clinical practice closer toward the Engel model of biopsychosocial medicine.     

Direct economic impact of Parkinson's disease: a research survey in the United Kingdom.

The direct costs of care were evaluated prospectively in a sample of people with Parkinson's disease (PD) in the United Kingdom in 1998. The subjects were drawn from a random sample of general practitioner practices within a representative sample of 36 Regional Health Authorities and the equivalent. A total of 444 resource use questionnaires with usable data were returned (response rate, 59%). The total mean annual cost of care per patient for all patients by age was 5,993 pounds (9,554 euro, n = 432). Hoehn and Yahr stage significantly (P < 0.001) influenced expenditure by stage as follows: 0 and I, 2,971 pounds (4,736 euro, n = 110); II, pound 3,065 (4,886 euro, n = 89); III, 6,183 pounds (9,857 euro, n = 120); IV, 10,134 pounds (euro;16,155, n = 87); V, 18,358 pounds (29,265 euro, n = 17). National Health Service costs accounted for approximately 38% and social services for 34% of the direct costs of care. Drug expenditure accounted for 24% of overall costs in the <65 years age group and 10% in patients aged >85 years. A move from home to residential care was associated with an approximately 500% cost increase. In conclusion, PD imposes significant direct costs on public services and on individuals. These costs should be taken into account when allocating public funds.     

Policy,organisation and practice of specialist old age psychiatry in England

OBJECTIVE: To describe and compare service arrangements in old age psychiatry across England according to three broad domains: (i) levels of professional autonomy; (ii) degree of community orientation (delivery of and links with community services) and (iii) degree of integration between health and social care provision. DESIGN: Cross sectional survey of consultants in old age psychiatry in England. Potential respondents were sourced from the Royal College of Psychiatrists and Regional Advisers in Old Age Psychiatry. MEASURES: A self-administered postal questionnaire was piloted and refined. The questionnaire domains listed above reflect core policy issues for older people's services, covering the domains above. RESULTS: There is marked variation in the deployment and use of professional staff in old age psychiatry, ranging from open access to multidisciplinary assessment to services only accessible by clinician referral. Patterns of linkage with primary care are likewise variable with only half of services providing the types of support recommended by the Audit Commission (2000). Community orientation was evident to a considerable extent in support to care homes and assessment practices. Links between health and social care appeared strongest in terms of liaison and training. There was less evidence of more formal integration through shared management of staff or for links with intensive home support for those with dementia. CONCLUSIONS: The data provide a unique picture and benchmark of the configuration of old age psychiatry, a core element of mental health care in old age, after some 25 years of development in the UK. There appears to be substantial variation on all three domains of comparison.     

A review of mental health services for refugees between 1975 and 1985 and a proposal for future services

A lack of federal planning and foresight and an uneven and poorly coordinated network of state services have resulted in fragmented mental health care for the large number of Southeast Asian and other refugees who have entered the United States since 1975. The author reviews the history of mental health services for refugees between 1975 and 1985 and proposes the development of separate mental health and health services for refugees that are responsive to their political, social, economic, and cultural needs. Ideally the services would be provided within existing medical institutions and staffed by medical, psychiatric, and social services personnel assisted by culturally sensitive translators. The author outlines the role of government and organized psychiatry in shaping new programs for refugees and promoting their mental health.     

Development of consultation-liaison psychiatry in The Netherlands. Its social psychiatric heritage

Dutch consultation-liaison psychiatry (C-L psychiatry) has followed a developmental line separate from the American system. First, C-L psychiatry in the Netherlands has been less influenced by psychosomatic medicine than by social psychiatry. Second, the presence of psychiatric units in general hospitals that appear to be correlated with the growth of C-L psychiatry in the United States occurred later in the Netherlands. Third, little government support for clinical care, research, and especially for training has been available to Dutch psychiatry. Consequently, there has been little recent financial pressure on C-L psychiatry from reduced government support, as occurred in the United States. Finally, the relationship between primary and secondary health care in the Netherlands allows C-L psychiatry to have a direct impact on several inpatient and ambulatory levels in the health care chain. A nationally accepted database form for the computerized registration of the Psychiatric Consultations at the eight university hospitals and ten other general hospitals is currently in use. To facilitate standardization and recording the psychiatric consultation process, the Netherlands Consortium for C-L psychiatry (NCCP) was formed.     

New estimates of the direct costs of traumatic spinal cord injuries: results of a nationwide survey.

New estimates of the direct costs of traumatic spinal cord injuries (SCI) are obtained from a comprehensive survey of the US SCI population. These direct costs, defined as the value (in 1988 dollars) of resources used specifically to treat or to adapt to the SCI condition, represent the average experience of the US SCI population. Responses to a detailed questionnaire administered to a sample of traumatic SCI persons in the United States provide the primary source of data for this study. Analysis of this survey data indicates that more recently injured SCI persons (ie those injured since 1970) spent an average of 171 days in a hospital over the first 2 years post injury. Initial hospital expenses will average $95,203. Home modification costs in excess of $8,000 can also be expected. After recovery and rehabilitation, a SCI person will pay, on average, $2,958 per year in hospital expenses and $4,908 per year for other medical services, supplies and adaptive equipment. Personal assistance costs and costs of institutional care will average $6,269 per year. These cost estimates represent the incremental costs of SCI, ie they exclude any costs that would have been incurred in the absence of SCI.     

Patterns of referral from consultation-liaison to social work services

Despite their importance, the nature and context of referral patterns among mental health disciplines in the general hospital has not been sufficiently explored. This study focuses on consultation-liaison (C-L) psychiatry patterns of referral to social work services (SWS). From a structured data base of 1170 consults, it was observed that C-L referred 24% of the cases seen by psychiatry. Psychiatry was more likely to refer those who are: female (p = less than 0.05), living with others (p = less than 0.05), described as less urgent (p = less than 0.05), diagnosed with personality disorders (p = less than 0.01), under greater psychosocial stress (Axis IV) (p = less than 0.001), and evaluated as having better functional status (Axis V) (p = less than 0.001). Regression analysis revealed that four variables had the greatest impact on differentiating those C-L referred to SWS from the "others": 1) constant observation recommended (log -586, p = 0.0001); 2) type of psychiatric management (log -573, p = 0.0001); 3) Medicaid insurance (log -564, p = 0.0001); and 4) original referral for the consultation was the refusal of tests or medical treatment (log -559, p = 0.002).