Outcomes of Supported Housing for Homeless Veterans with Psychiatric and Substance Abuse Problems

This study examines the effect of previous participation in time limited residential treatment and other factors on treatment outcomes among homeless veterans with serious mental illness placed into permanent supported housing. The sample consisted of 655 veterans placed into supported housing at 18 sites through the VA's Healthcare for Homeless Veterans (HCHV) Supported Housing Program during the period 1993-2000. Data on client and program characteristics, and treatment outcomes, were documented by HCHV case managers staffing these programs. Data on use of VA services, including time limited residential treatment received 6 months prior to entry into supported housing, were extracted from VA administrative files. The relationship of prior residential treatment, as well as other measures of client characteristics, service use, and program characteristics, to outcomes were assessed using both bivariate and multivariate Cox proportional hazards regression and logistic regression. After adjusting for client characteristics, service use, and program characteristics, no differences in outcomes were found between clients who had received prior residential treatment and those placed directly into permanent supported housing. Prior residential treatment appears to have little effect on treatment outcomes among formerly homeless veterans placed into permanent supported housing programs providing indirect support for the direct placement supported housing model.     

Mental health status and community adjustment after treatment in a residential treatment program for homeless veterans.

OBJECTIVE: An uncontrolled outcome study was conducted to examine clinical improvement and the relationship of psychiatric and substance abuse problems, community adjustment, and housing status among homeless veterans who participated in a multisite residential treatment program. METHOD: The study was performed at three U.S. Department of Veterans Affairs medical centers in Florida, Ohio, and California. Baseline, discharge, and 3-month postdischarge follow-up data were collected for 255 veterans admitted to the Domiciliary Care for Homeless Veterans Program. Multiple dimensions of outcome were examined, including psychiatric symptoms, alcohol abuse, drug abuse, social contacts, income, employment, and housing. RESULTS: Program participation was found to be associated with improvement in all areas of mental health and community adjustment. Improvement in psychiatric symptoms was associated with superior housing outcomes and improvement in community adjustment. When correlates of improvement in alcohol and drug abuse were examined, only one of eight possible relationships was found to be significant: improvement in alcohol problems was positively associated with improvement in employment. CONCLUSIONS: Homeless mentally ill veterans derive clear benefits from participation in a multidimensional residential treatment program. Improvement in mental health problems, however, is weakly linked to improvement in other areas, suggesting that treatment programs may have to attend separately to multiple domains of life adjustment.     

Fidelity to assertive community treatment and client outcomes in the New Hampshire dual disorders study.

OBJECTIVE: The study examined the association between fidelity of programs to the assertive community treatment model and client outcomes in dual disorders programs. METHODS: Assertive community treatment programs in the New Hampshire dual disorders study were classified as low-fidelity programs (three programs) or high-fidelity programs (four programs) based on extensive longitudinal process data. The study included 87 clients with a dual diagnosis of severe mental illness and a comorbid substance use disorder. Sixty-one clients were in the high-fidelity programs, and 26 were in the low-fidelity programs. Client outcomes were examined in the domains of substance abuse, housing, psychiatric symptoms, functional status, and quality of life, based on interviews conducted every six months for three years. RESULTS: Clients in the high-fidelity assertive community treatment programs showed greater reductions in alcohol and drug use and attained higher rates of remission from substance use disorders than clients in the low-fidelity programs. Clients in high-fidelity programs had higher rates of retention in treatment and fewer hospital admissions than those in low-fidelity programs. No differences between groups were found in length of hospital stays and other residential measures, psychiatric symptoms, family and social relations, satisfaction with services, and overall life satisfaction. CONCLUSIONS: Faithful implementation of, and adherence to, the assertive community treatment model for persons with dual disorders was associated with superior outcomes in the substance use domain. The findings underscore the value of measures of model fidelity, and they suggest that local modifications of the assertive community treatment model or failure to comply with it may jeopardize program success.     

Comparison of outcomes of acute care in short-term residential treatment and psychiatric hospital settings

OBJECTIVE: The study compared the demographic and diagnostic characteristics of clients and the outcomes of treatment in five short-term acute residential treatment programs and two acute hospital-based psychiatric programs. METHODS: A total of 368 clients in the short-term acute residential treatment programs and 186 clients in the psychiatric hospital programs participated in an observational study. The study used a repeated-measures design and assessed participants on multiple standardized measures of symptoms and functioning at admission, discharge, and four-month follow-up. Comparisons between the two groups were conducted separately by diagnostic category. Measures included the Brief Symptom Inventory, the Behavior and Symptom Identification Scale-32, the Medical Outcomes Short-Form-36, and the Client Satisfaction Questionnaire-8. RESULTS: The two types of programs admit persons with similar levels of acute distress who have comparable levels of improvement at discharge and an equivalent degree of short-term stability of treatment gains. Costs of treatment episodes were considerably lower for the short-term residential programs, and client satisfaction with the two types of programs was comparable. CONCLUSIONS: Short-term acute residential treatment is a less costly yet similarly effective alternative to psychiatric hospitalization for many voluntary adult patients.     

A national evaluation of treatment outcomes for cocaine dependence.

BACKGROUND: This national study focused on posttreatment outcomes of community treatments of cocaine dependence. Relapse to weekly (or more frequent) cocaine use in the first year after discharge from 3 major treatment modalities was examined in relation to patient problem severity at admission to the treatment program and length of stay. METHODS: We studied 1605 cocaine-dependent patients from 11 cities located throughout the United States using a naturalistic, nonexperimental evaluation design. They were sequentially admitted from November 1991 to December 1993 to 55 community-based treatment programs in the national Drug Abuse Treatment Outcome Studies. Included were 542 patients admitted to 19 long-term residential programs, 458 patients admitted to 24 outpatient drug-free programs, and 605 patients admitted to 12 short-term inpatient programs. RESULTS: Of 1605 patients, 377 (23.5%) reported weekly cocaine use in the year following treatment (dropping from 73.1% in the year before admission). An additional 18.0% had returned to another drug treatment program. Higher severity of patient problems at program intake and shorter stays in treatment (<90 days) were related to higher cocaine relapse rates. CONCLUSIONS: Patients with the most severe problems were more likely to enter long-term residential programs, and better outcomes were reported by those treated 90 days or longer. Dimensions of psychosocial problem severity and length of stay are, therefore, important considerations in the treatment of cocaine dependence. Cocaine relapse rates for patients with few problems at program intake were most favorable across all treatment conditions, but better outcomes for patients with medium- to high-level problems were dependent on longer treatment stays.     

Implementation of supported employment for homeless veterans with psychiatric or addiction disorders: two-year outcomes

OBJECTIVE: There has been growing interest in the dissemination of supported employment, but few studies have used a control group to examine the benefits of multisite dissemination efforts for clients or have addressed the needs of homeless persons with psychiatric disorders, addiction disorders, or both. This study examined a low-intensity training approach for implementing the individual placement and support (IPS) model at nine Department of Veterans Affairs (VA) programs and compared client outcomes before (phase 1) and after (phase 2) the program was implemented (phase 1). METHODS: Special funds and sustained training, which was based primarily on teleconferencing, were used to support implementation of the IPS model of supported employment at nine VA programs for homeless veterans. A comparison cohort (phase 1) (N=308) was recruited from the nine sites before IPS was implemented. A postimplementation cohort (phase 2) (N=321) was recruited at the same sites and offered IPS. Mixed models were used to compare quarterly employment outcomes over two years in phase 1 and phase 2, adjusting for significant baseline differences (N=629). RESULTS: Measures of both client-level service delivery and site-level fidelity to IPS suggest that implementation was successful at most, but not all, sites. Overall, compared with veterans in the phase 1 group, those in the phase 2 group had a better long-term work history at the time of program entry. When the analyses controlled for baseline differences, the mean number of competitive employment days per month over the two-year follow-up period was 15% higher for veterans in phase 2 (8.4 days compared with 7.3 days; p<.001) and the mean number of days housed during follow-up was also higher in phase 2 (34.1 days compared with 29.8 days; p=.04), but there were no differences for other outcome measures. CONCLUSIONS: A sustained training program can be used to implement IPS in systems that have had little past experience with this approach. This effort was associated with improved employment outcomes and more rapid housing placement.     

Residential versus community treatment of personality disorders: a comparative study of three treatment programs

OBJECTIVE: The aim of this study was to compare the effectiveness of three treatment models for personality disorder: 1) a long-term psychoanalytically oriented residential specialist program, 2) a phased "step-down" specialist psychosocial program that included a briefer residential stay and an outpatient component, and 3) a general community psychiatric model. METHOD: One hundred forty-three patients with a personality disorder diagnosis were allocated according to geographical criteria to the three treatment conditions. Outcome was prospectively evaluated at 6, 12, and 24 months through the use of a standardized battery of instruments that included measures of general symptom severity, social adaptation, assessment of mental health functioning, frequency of self-harm and suicide attempts, and rates and duration of hospital readmissions. RESULTS: By 24 months, patients in the step-down condition showed significant improvements on all measures. Patients in the long-term residential model showed significant improvements in symptom severity, social adaptation, and global functioning, while no changes were achieved in self-harm, attempted suicide, and readmission rates. Patients in the general psychiatric group showed no improvement on any variables except self-harm and hospital readmissions. CONCLUSIONS: The results of this study suggest that for personality disorders, a specialist step-down program is more effective than both long-term residential treatment and general psychiatric treatment in the community. Replication is needed that includes a random allocation of patients to conditions to ensure that geographical factors did not account for the observed differences.     

Outcomes of homeless adults with mental illness in a housing program and in case management only

OBJECTIVE: The effectiveness of two types of service programs in ameliorating homelessness among individuals with severe mental illness was compared. METHODS: Homeless persons with severe mental illness were recruited into the study on their entry into one of two types of homeless service programs. The first was a comprehensive housing program, in which consumers received guaranteed access to housing, housing support services, and case management. The second was a program of case management only, in which consumers received specialized case management services. In a quasi-experimental or nonrandom-assignment design, participants responded to instruments measuring housing status, mental health symptoms, substance use, physical health, and quality of life at baseline (program entry) and at six months and 12 months after entry. The baseline interview was completed by 152 participants and at least one of the two follow-up interviews by 108 participants. High-, medium-, and low-impairment subgroups, based on psychiatric symptoms and degree of alcohol and illegal drug use, were formed by means of a propensity score subclassification. RESULTS: Persons with high psychiatric symptom severity and high substance use achieved better housing outcomes with the comprehensive housing program than with case management alone. However, persons with low and medium symptom severity and low levels of alcohol and drug use did just as well with case management alone. CONCLUSIONS: The results suggest that the effectiveness, and ultimately the cost, of homeless services can be improved by matching the type of service to the consumer's level of psychiatric impairment and substance use rather than by treating mentally ill homeless persons as a homogeneous group.     

Pathways to housing: supported housing for street-dwelling homeless individuals with psychiatric disabilities

OBJECTIVE: This study examined the effectiveness of the Pathways to Housing supported housing program over a five-year period. Unlike most housing programs that offer services in a linear, step-by-step continuum, the Pathways program in New York City provides immediate access to independent scatter-site apartments for individuals with psychiatric disabilities who are homeless and living on the street. Support services are provided by a team that uses a modified assertive community treatment model. METHODS: Housing tenure for the Pathways sample of 242 individuals housed between January 1993 and September 1997 was compared with tenure for a citywide sample of 1, 600 persons who were housed through a linear residential treatment approach during the same period. Survival analyses examined housing tenure and controlled for differences in client characteristics before program entry. RESULTS: After five years, 88 percent of the program's tenants remained housed, whereas only 47 percent of the residents in the city's residential treatment system remained housed. When the analysis controlled for the effects of client characteristics, it showed that the supported housing program achieved better housing tenure than did the comparison group. CONCLUSIONS: The Pathways supported housing program provides a model for effectively housing individuals who are homeless and living on the streets. The program's housing retention rate over a five-year period challenges many widely held clinical assumptions about the relationship between the symptoms and the functional ability of an individual. Clients with severe psychiatric disabilities and addictions are capable of obtaining and maintaining independent housing when provided with the opportunity and necessary supports.     

A longitudinal perspective on monitoring outcomes of an innovative program

OBJECTIVES: The use of outcome assessment to evaluate the performance of programs over many years of operation is becoming an increasingly important aspect of health care management. Over a five-year period of program monitoring, this study examined changes in individual client outcomes three months after discharge from a residential work therapy program for veterans with severe substance use disorders. The study also examined the relationship between these outcomes and changing program features, such as staffing, treatment variables, and follow-up rates. METHODS: Data on admissions characteristics, services delivered during treatment, and status at discharges were collected for 3,390 veterans who were treated in 25 sites in the Department of Veterans Affairs' Compensated Work Therapy/Transitional Residence program. Follow-up data were gathered three months after discharge for 1,771 veterans (52.2 percent). Hierarchical linear modeling was used to examine the association between year of discharge, site-level measures of program staffing and follow-up rate, and individual patient-level treatment variables and outcomes. RESULTS: Over the five-year monitoring period, site staff-to-bed ratios and follow-up rates dropped substantially, and veterans attended more Alcoholics Anonymous and Narcotics Anonymous meetings and had more toxicology screens. Higher staff-to-bed ratios were associated with more positive employment outcomes, and higher follow-up rates were associated with poorer outcomes in substance abuse and lower total income. However, no significant outcome trends were observed in clinical follow-up measures after the analyses adjusted for these factors, suggesting that program effectiveness did not deteriorate during a period of program change. CONCLUSIONS: Long-term evaluations of program process and follow-up status can usefully document sustained program effectiveness over many years. Such efforts should enhance their value by examining and adjusting for the impact of factors such as changing staffing levels and follow-up rates.     

Inpatient versus day hospital treatment for chronic, combat-related posttraumatic stress disorder: a naturalistic comparison

This study adopted a quasi-experimental design to compare the treatment outcomes of inpatient-outpatient programs and day hospital programs for chronic, combat-related posttraumatic stress disorder. Data were drawn from 202 Vietnam veterans who had completed treatment at four programs across Australia. The veterans were assessed on a range of psychological and social variables at intake to the programs and followed up at 3 and 9 months after discharge. A significant main effect was found for time, with veterans from both program models demonstrating improvements that were maintained over the 9-month follow-up period. Group by time effects were not significant, which suggests that inpatient-outpatient programs are not more efficacious than the less expensive day hospital alternatives. In line with current mental health policy directions, the current study lends broad support to the recommendation that treatment services for veterans with posttraumatic stress disorder be delivered in the least restrictive environment.     

A Model of Patients' Satisfaction with Treatment for Posttraumatic Stress Disorder

There is little empirical knowledge about the contribution of treatment effectiveness to patient satisfaction, particularly in the area of mental health. We conducted this study to assess the satisfaction of 3,646 veterans who received treatment from March 1996–April 1997 at specialized inpatient and residential posttraumatic stress disorder programs at Departments of Veterans Affairs in 35 locations. We used structural equation modeling to evaluate and extend a model of connections among pretreatment characteristics, treatment structure, treatment effectiveness and patient satisfaction. The results suggest three implications for mental health administration and program planning: (1) any valid comparison of programs requires that differences in patient characteristics be taken into account, (2) satisfaction and effectiveness are largely separate indices of quality, and (3) shortening the length of stay to contain cost is likely to lower patient satisfaction.     

Incarceration Histories of Homeless Veterans and Progression Through a National Supported Housing Program

There is increasing concern that adults with a past history of incarceration are at particular disadvantage in exiting homelessness. Supported housing with case management has emerged as the leading service model for assisting homeless adults; however there has been limited examination of the success of adults with past history of incarceration in obtaining housing within this paradigm. Data were examined on 14,557 veterans who entered a national supported housing program for homeless veterans, the Housing and Urban Development-Veterans Affairs Supportive Housing program (HUD-VASH) during 2008 and 2009, to identify characteristics associated with a history of incarceration and to evaluate whether those with a history of incarceration are less likely to obtain housing and/or more likely to experience delays in the housing attainment process. Veterans who reported no past incarceration were compared with veterans with short incarceration histories (≤1 year) and those with long incarceration histories (>1 year). A majority of participants reported history of incarceration; 43 % reported short incarceration histories and 22 % reported long incarceration histories. After adjusting for baseline characteristics and site, history of incarceration did not appear to impede therapeutic alliance, progression through the housing process or obtaining housing. Within a national supported housing program, veterans with a history of incarceration were just as successful at obtaining housing in similar time frames when compared to veterans without any past incarceration. Supported housing programs, like HUD-VASH, appear to be able to overcome impediments faced by formerly incarcerated homeless veterans and therefore should be considered a a good model for housing assistance programs.     

Outcomes after initial receipt of social security benefits among homeless veterans with mental illness

OBJECTIVE: This study examined the relationship between receiving disability payments and changes in health status, community adjustment, and subjective quality of life. METHODS: The study evaluated outcomes among homeless mentally ill veterans who applied for Social Security Disability Insurance or Supplemental Security Income through a special outreach program. Veterans who were awarded benefits were compared with those who were denied benefits; their sociodemographic characteristics, clinical status, and social adjustment were evaluated just before receiving the initial award decision and again three months later. RESULTS: Beneficiaries (N=50) did not differ from those were denied benefits (N=123) on any baseline sociodemographic or clinical characteristics. However, beneficiaries were more willing to delay gratification, as reflected in scores on a time preference measure. Three months after the initial decision, beneficiaries had significantly higher total incomes and reported a higher quality of life. They spent more on housing, food, clothing, transportation, and tobacco products but not on alcohol or illegal drugs. No differences were found between groups on standardized measures of psychiatric status or substance abuse. CONCLUSIONS: Receipt of disability payments is associated with improved subjective quality of life and is not associated with increased alcohol or drug use.     

A Specialized Treatment Court for Veterans with Trauma Exposure: Implications for the Field

This study examines the efficacy of providing a Veterans Treatment Court specialized docket to trauma-affected veterans. Eighty-Six veterans enrolled in a jail diversion and trauma recovery Veterans Treatment Court program. Veteran participants were interviewed at baseline, 6- and 12-months to determine if the program led to improvements in jail recidivism, psychiatric symptoms, quality of life, and recovery. The results suggest that veteran’s involved in the Veterans Treatment Court programs experienced significant improvement in PTSD, depression, substance abuse, overall functioning, emotional wellbeing, relationships with others, recovery status, social connectedness, family functioning, and sleep.     

Conduct disorder behaviors, childhood family instability, and childhood abuse as predictors of severity of adult homelessness among American veterans

Purpose

Despite US federal efforts to end and prevent homelessness among veterans, there has been limited examination of pre-military factors like childhood problems, associated with adult homelessness. This study examined childhood problems among homeless veterans and its relation to severity of homelessness and outcomes in supported housing.

Methods

Using data from 1,161 homeless veterans at 19 sites enrolled in the Housing and Urban Development-Veterans Affairs Supportive Housing (HUD-VASH) program, three types of childhood problems were examined: conduct disorder behaviors, family instability, and childhood abuse. Multiple regressions were conducted to examine the association between childhood problems and severity of homelessness before supported housing, and childhood problems and outcomes after supported housing.

Results

About one-third reported conduct disorder behaviors, over half reported family instability, and 40 % reported childhood abuse. Greater childhood problems were found in this sample compared to published samples of non-homeless veterans. Conduct disorder behaviors, family instability, and childhood abuse were each weakly associated with lifetime homeless episodes. One year after enrollment in the HUD-VASH program, past conduct disorder behaviors and family instability were not predictive of outcomes, except childhood abuse was related to less social support and lower quality of life.

Conclusions

These findings demonstrate not only the potential impact of childhood abuse on social relationships and quality of life in adulthood, but also the resilience of homeless veterans from adverse childhoods to be successfully housed in a supported housing program.     

Outcomes of critical time intervention case management of homeless veterans after psychiatric hospitalization

OBJECTIVE: This study evaluated a modification of the critical time intervention (CTI) community case management model for homeless veterans with mental illness who were leaving Department of Veterans Affairs (VA) inpatient care. CTI offers time-limited intensive case management designed to negotiate transitions from institutional settings to community living. METHODS: CTI was implemented at eight VA medical centers through a training program that used primarily teleconference-based case review. A comparison cohort (phase 1) of 278 participants was recruited before CTI was implemented, and a treatment cohort (phase 2) of 206 participants was recruited after implementation and offered CTI. Mixed-regression models were used to compare outcomes in phase 1 and phase 2 and controlled for baseline differences between participants in the two phases. RESULTS: Measures of client service delivery show that CTI was successfully implemented at most sites. Phase 1 veterans had a better work history and more drug use at baseline than phase 2 clients had. Controlling for these differences, veterans in phase 2 on average had 19% more days housed in each 90-day reporting period over the one-year follow-up (p<.002) and 14% fewer days in institutional settings (p=.041). Veterans in phase 2 also had 19% lower Addiction Severity Index (ASI) alcohol use scores (p<.001), 14% lower ASI drug use scores (p=.003), and 8% lower ASI psychiatric problem scores (p=.001). CONCLUSIONS: A sustained training program can be used to implement CTI in systems that have little past experience with this approach and can yield improved housing and mental health outcomes.     

Outcomes of four treatment approaches in community residential programs for patients with substance use disorders

OBJECTIVE: Treatment approaches used in community residential facilities for patients with substance use disorders were identified, and patients' participation in treatment and case-mix-adjusted one-year outcomes for substance use, symptoms, and functioning in facilities with different treatment approaches were examined. METHODS: A total of 2,376 patients with substance use disorders treated in a representative sample of 88 community residential facilities were assessed at entry to and discharge from the facility and at one-year follow-up. The community residential facilities were classified into four types based on the major emphasis of the treatment program: therapeutic community, psychosocial rehabilitation, 12-step, and undifferentiated. RESULTS: Patients in programs that used the therapeutic community, psychosocial rehabilitation, and 12-step approaches had comparable one-year outcomes in symptoms and functioning that were better than those of patients in undifferentiated programs. A more directed treatment orientation, a longer episode of care, and completion of care were independently related to better one-year outcomes. These findings held for patients with only substance use disorders and for patients with both substance use and psychiatric disorders. CONCLUSIONS: Community residential programs that have a more directed treatment orientation and that motivate patients to complete treatment have better substance use outcomes. As an increasingly important locus of specialized care, community residential facilities need to develop and maintain more differentiated and distinctive treatment orientations.     

Homeless veterans' satisfaction with residential treatment

OBJECTIVE: Because little is known about homeless individuals' satisfaction with mental health services or the association between satisfaction and measures of treatment outcome, the study examined those issues in a group of homeless veterans. METHODS: Demographic and clinical data were obtained from intake assessments conducted before veterans' admission to residential treatment facilities under contract with the Department of Veterans Affairs Health Care for Homeless Veterans program, a national outreach and case management program. Clients completed a satisfaction survey and the Community-Oriented Programs Environment Scale, which asks them to rate dimensions of the treatment environment. Outcome data came from discharge outcome summaries completed by VA case managers. RESULTS: Overall satisfaction with residential treatment services was high among the 1,048 veterans surveyed. Greater satisfaction was associated with more days of drug abuse and more days spent institutionalized in the month before intake and with an intake diagnosis of drug abuse. Regression analyses indicated that satisfaction was most strongly related to clients' perceptions of several factors in the treatment environment. Policy clarity, clients' involvement in the program, an emphasis on order, a practical orientation, and peer support were positively related to satisfaction; staff control and clients' expression of anger were negatively related. Satisfaction was significantly associated with case managers' discharge ratings of clinical improvement of drug problems and psychiatric problems. CONCLUSIONS: Homeless veterans are more satisfied in environments they perceive to be supportive, orderly, and focused on practical solutions. The results indicate that client satisfaction is not related to treatment outcomes strongly enough to serve as a substitute for other outcome measures.     

Cost-effectiveness of supported housing for homeless persons with mental illness

BACKGROUND: Supported housing, integrating clinical and housing services, is a widely advocated intervention for homeless people with mental illness. In 1992, the US Department of Housing and Urban Development (HUD) and the US Department of Veterans Affairs (VA) established the HUD-VA Supported Housing (HUD-VASH) program. METHODS: Homeless veterans with psychiatric and/or substance abuse disorders or both (N = 460) were randomly assigned to 1 of 3 groups: (1) HUD-VASH, with Section 8 vouchers (rent subsidies) and intensive case management (n = 182); (2) case management only, without special access to Section 8 vouchers (n = 90); and (3) standard VA care (n = 188) Primary outcomes were days housed and days homeless. Secondary outcomes were mental health status, community adjustment, and costs from 4 perspectives. RESULTS: During a 3-year follow-up, HUD-VASH veterans had 16% more days housed than the case management-only group and 25% more days housed than the standard care group (P<.001 for both). The case management-only group had only 7% more days housed than the standard care group (P =.29). The HUD-VASH group also experienced 35% and 36% fewer days homeless than each of the control groups (P<.005 for both). There were no significant differences on any measures of psychiatric or substance abuse status or community adjustment, although HUD-VASH clients had larger social networks. From the societal perspective, HUD-VASH was 6200 US dollars (15%) more costly than standard care. Incremental cost-effectiveness ratios suggest that HUD-VASH cost 45 US dollars more than standard care for each additional day housed (95% confidence interval, -19 US dollars to 108 US dollars). CONCLUSIONS: Supported housing for homeless people with mental illness results in superior housing outcomes than intensive case management alone or standard care and modestly increases societal costs.