Effects of comorbid substance use disorders on outcomes in a Housing First intervention for homeless people with mental illness

Brain injury, mental health and substance use in homeless populations: community-generated recommendations for healthcare service delivery and research

BACKGROUND

The prevalence of acquired brain injury (ABI) and mental health/substance use (MHSU) disorders is high amongst people experiencing homelessness, yet guidance for addressing these complex comorbidities is lacking. Therefore, the objective of this study was to engage community-based stakeholders in a health priority-setting process to generate, identify and prioritize recommendations for clinical practice and research to improve healthcare services for individuals with concurrent ABI-MHSU who are experiencing homelessness.

METHODS

Data were collected during a one-day workshop as part of the BC Consensus on Brain Injury. Participants were 163 stakeholders in the ABI-MHSU and homeless communities (Mage = 46.40, SD = ± 13.80, 72% female), including service providers, people with lived experience, healthcare professionals and other community-based stakeholders. Stakeholders participated in concurrent focus groups based on the nominal group technique. Initial recommendations were generated then collated, themed and rank-ordered by priority and a consensus voting method was used to identify the top five priorities for research and clinical practice.

RESULTS

Stakeholders discussions and subsequent prioritization evaluations identified the following recommendations for clinical practice: (1) Provide accessible and affordable supportive housing; (2) enhance resources (financial, human) for healthcare service providers; (3) design needs-based services that promote quality of life; (4a) improve communication and collaboration between service providers; (4b) adopt a long-term and integrated approach; and (5) reduce stigma and discrimination through public health education. Recommendations for research, also ordered by priority, included: (1) Evaluate and optimize existing interventions for immediate implementation; (2) develop specialized interventions and diagnostic techniques; (3) collect meaningful data to better understand impacts and intersections; (4) increase mechanisms for knowledge transfer; and (5) explore methods for risk identification and prevention.

CONCLUSIONS

This is the first study to identify and prioritize recommendations for research and clinical practice related to healthcare services for people experiencing homelessness with concurrent ABI-MHSU conditions. The stakeholder-generated recommendations from this study provide a valuable resource for researchers, clinicians and policymakers to enhance care for this underserved population.

Staff views on overdose prevention in permanent supportive housing

BACKGROUND

Permanent supportive housing (PSH) is the gold standard intervention for chronic homelessness, but PSH tenants face high risk for overdose due to a combination of individual and environmental risk factors. Little research has examined overdose prevention in PSH.

METHODS

We conducted baseline surveys with staff from 20 New York PSH buildings participating in an overdose prevention technical assistance intervention study. PSH staff from participating buildings were invited via email to complete a brief online survey about their knowledge of overdose and perspectives on implementing overdose prevention practices in PSH.

RESULTS

Surveys were completed by 178 staff of 286 invitations sent (response rate 62.2%). Average score on the Brief Opioid Overdose Knowledge (BOOK) questionnaire was 8.62 (SD 2.64) out of 12 points. Staff felt very positively (91.6-97.2% agreed or completely agreed) regarding the appropriateness and acceptability of implementing overdose prevention practices in PSH, but less certain about the feasibility of implementing these practices (62.4-65.5% agreed or completely agreed). Most (77.3%) felt it was mostly or definitely true that overdose prevention was a top priority in their building. Most PSH staff (median = 85.0%) but fewer tenants (median = 22.5%) had received a naloxone kit and training in overdose response.

CONCLUSION

Staff feel positively about the acceptability and appropriateness of implementing overdose response practices in PSH, but somewhat more uncertain about the feasibility of implementing these practices. This study's results help hone targets for interventions to help PSH buildings take steps to reduce tenant overdose risk.

The Comparison of Four Models of Community Psychiatry-A Systematic Review and Preliminary Meta-Analysis of the ACT Model

BACKGROUND

The aim of this systematic review and preliminary meta-analysis is to summarize the effectiveness of selected models of community psychiatry: community mental health center, flexible assertive community treatment, community mental health team and assertive community treatment.

METHODS

In order to determine the results of therapeutic interventions, comparison of symptom severity, level of functioning, use of institutional care, quality of life/well-being/recovery and satisfaction at baseline and during follow-up was conducted. Thirty-seven quantitative studies were selected, grouped according to the study model and compared in terms of positive, neutral and negative impact on patients according to efficacy factors. Additionally, a preliminary random-effects meta-analysis was performed on 11 studies to investigate the effectiveness of assertive community treatment.

RESULTS

Review shows the overall positive results of the selected models. The best documented effects were an increase in the level of functioning and a reduction in institutional care. The number of articles collected indicates that community mental health center and assertive community treatment are better researched than community mental health team and flexible assertive community treatment models. Meta-analysis on assertive community treatment studies showed significant pooled effect sizes for domains of functioning, quality of life, hospitalizations and symptom severity.

CONCLUSIONS

The community mental health center and assertive community treatment are most likely to indicate efficiency and safety. The community mental health team and flexible assertive community treatment models should be explored in future studies. Results of the preliminary meta-analysis provide further evidence for the effectiveness of assertive community treatment.

The effectiveness of abstinence-based and harm reduction-based interventions in reducing problematic substance use in adults who are experiencing homelessness in high income countries: A systematic review and meta-analysis: A systematic review

Background

Homelessness is a traumatic experience, and can have a devastating effect on those experiencing it. People who are homeless often face significant barriers when accessing public services, and have often experienced adverse childhood events, extreme social disadvantage, physical, emotional and sexual abuse, neglect, low self-esteem, poor physical and mental health, and much lower life expectancy compared to the general population. Rates of problematic substance use are disproportionately high, with many using drugs and alcohol to deal with the stress of living on the street, to keep warm, or to block out memories of previous abuse or trauma. Substance dependency can also create barriers to successful transition to stable housing.

Objectives

To understand the effectiveness of different substance use interventions for adults experiencing homelessness.

Search Methods

The primary source of studies for was the 4th edition of the Homelessness Effectiveness Studies Evidence and Gaps Maps (EGM). Searches for the EGM were completed in September 2021. Other potential studies were identified through a call for grey evidence, hand-searching key journals, and unpacking relevant systematic reviews.

Selection Criteria

Eligible studies were impact evaluations that involved some comparison group. We included studies that tested the effectiveness of substance use interventions, and measured substance use outcomes, for adults experiencing homelessness in high income countries.

Data Collection and Analysis

Descriptive characteristics and statistical information in included studies were coded and checked by at least two members of the review team. Studies selected for the review were assessed for confidence in the findings. Standardised effect sizes were calculated and, if a study did not provide sufficient raw data for the calculation of an effect size, author(s) were contacted to obtain these data. We used random-effects meta-analysis and robust-variance estimation procedures to synthesise effect sizes. If a study included multiple effects, we carried out a critical assessment to determine (even if only theoretically) whether the effects are likely to be dependent. Where dependent effects were identified, we used robust variance estimation to determine whether we can account for these. Where effect sizes were converted from a binary to continuous measure (or vice versa), we undertook a sensitivity analysis by running an additional analysis with these studies omitted. We also assessed the sensitivity of results to inclusion of non-randomised studies and studies classified as low confidence in findings. All included an assessment of statistical heterogeneity. Finally, we undertook analysis to assess whether publication bias was likely to be a factor in our findings. For those studies that we were unable to include in meta-analysis, we have provided a narrative synthesis of the study and its findings.

Main Results

We included 48 individual papers covering 34 unique studies. The studies covered 15, 255 participants, with all but one of the studies being from the United States and Canada. Most papers were rated as low confidence (n = 25, or 52%). By far the most common reason for studies being rated as low confidence was high rates of attrition and/or differential attrition of study participants, that fell below the What Works Clearinghouse liberal attrition standard. Eleven of the included studies were rated as medium confidence and 12 studies as high confidence. The interventions included in our analysis were more effective in reducing substance use than treatment as usual, with an overall effect size of -0.11 SD (95% confidence interval [CI], -0.27, 0.05). There was substantial heterogeneity across studies, and the results were sensitive to the removal of low confidence studies (-0.21 SD, 95% CI [-0.59, 0.17] - 6 studies, 17 effect sizes), the removal of quasi-experimental studies (-0.14 SD, 95% CI [-0.30, 0.02] - 14 studies, 41 effect sizes) and the removal of studies where an effect size had been converted from a binary to a continuous outcome (-0.08 SD, 95% CI [-0.31, 0.15] - 10 studies, 31 effect sizes). This suggests that the findings are sensitive to the inclusion of lower quality studies, although unusually the average effect increases when we removed low confidence studies. The average effect for abstinence-based interventions compared to treatment-as-usual (TAU) service provision was -0.28 SD (95% CI, -0.65, 0.09) (6 studies, 15 effect sizes), and for harm reduction interventions compared to a TAU service provision is close to 0 at 0.03 SD (95% CI, -0.08, 0.14) (9 studies, 30 effect sizes). The confidence intervals for both estimates are wide and crossing zero. For both, the comparison groups are primarily abstinence-based, with the exception of two studies where the comparison group condition was unclear. We found that both Assertative Community Treatment and Intensive Case Management were no better than treatment as usual, with average effect on substance use of 0.03 SD, 95% CI [-0.07, 0.13] and -0.47 SD, 95% CI [-0.72, -0.21] 0.05 SD, 95% CI [-0.28, 0.39] respectively. These findings are consistent with wider research, and it is important to note that we only examined the effect on substance use outcomes (these interventions can be effective in terms of other outcomes). We found that CM interventions can be effective in reducing substance use compared to treatment as usual, with an average effect of -0.47 SD, 95% CI (-0.72, -0.21). All of these results need to be considered in light of the quality of the underlying evidence. There were six further interventions where we undertook narrative synthesis. These syntheses suggest that Group Work, Harm Reduction Psychotherapy, and Therapeutic Communities are effective in reducing substance use, with mixed results found for Motivational Interviewing and Talking Therapies (including Cognitive Behavioural Therapy). The narrative synthesis suggested that Residential Rehabilitation was no better than treatment as usual in terms of reducing substance use for our population of interest.

Authors' Conclusions

Although our analysis of harm reduction versus treatment as usual, abstinence versus treatment as usual, and harm reduction versus abstinence suggests that these different approaches make little real difference to the outcomes achieved in comparison to treatment as usual. The findings suggest that some individual interventions are more effective than others. The overall low quality of the primary studies suggests that further primary impact research could be beneficial.

Daily opioid and stimulant co-use and nonfatal overdoses in the context of social disadvantage: Findings on marginalized populations

OBJECTIVE

Opioids and stimulants are increasingly implicated in overdose deaths, particularly among minoritized groups. We examined daily opioid and cocaine co-use, nonfatal overdoses, and naloxone carrying among minoritized people who inject drugs (PWID).

METHODS

The study derived data from 499 PWID in Baltimore City, MD, recruited using street-based outreach between 2016 and 2019. Participants reported overdoses; sociodemographic characteristics; and use of nonmedical prescription opioids, heroin, cocaine, and naloxone.

RESULTS

Among the participants, the mean age was 46, 34 % were female, 64 % self-identified as Black, and 53 % experienced recent homelessness. Black PWID, compared to White PWID, were as likely to use opioids and cocaine daily but were 61 % less likely to have naloxone. After controlling for sociodemographic characteristics, women (aOR:1.88, 95%CI: 1.14, 3.11), persons experiencing homelessness (aOR:3.07, 95%CI: 1.79, 5.24), and those who experienced a recent overdose (aOR:2.14, 95%CI: 1.29, 3.58) were significantly more likely to use opioids and any form of cocaine every day. In a subanalysis of only female PWID, females engaged in sex work (aOR:2.27, 95%CI: 1.02, 5.07) and females experiencing recent homelessness (aOR:5.82, 95%CI: 2.50, 13.52) were significantly more likely to use opioids and cocaine daily. Furthermore, females (aOR:1.69, 95%CI:1.03, 2.77), persons experiencing homelessness (aOR:1.94, 95%CI:1.16, 3.24), and those with higher educational attainment (aOR:2.06, 95%CI:1.09, 3.91) were more likely to often/always carry naloxone, while Black PWID were less likely to have naloxone (aOR:0.39, 95%CI:0.22, 0.69).

CONCLUSIONS

These findings highlight the need for targeted naloxone distribution and other harm-reduction interventions among minoritized groups in urban areas.

"They are always focusing on the person who is doing the worst": Exploring how crisis shapes young people's pathways in and out of supportive housing in Vancouver, Canada

Housing instability, homelessness, and mental health among young people who use drugs in Vancouver, Canada, and elsewhere have increasingly been framed through a language of crisis. The declaration of overlapping housing, mental health, and addictions crises in our own setting has prompted a wide range of interventions, including the rapid expansion of supportive housing programs that include integrated housing-based substance use and mental health care. There is growing evidence demonstrating that these models are effective at stabilizing people who are experiencing protracted housing instability, mental health, and substance use related health concerns. We recount stories of three young people who have lived in supportive housing to argue that achieving the relative stability afforded by these interventions is partially contingent on maintaining a delicate balance between being in a state of "too much" or "too little" in crisis. These stories demonstrate two key findings. First, being in crisis has made these young people visible to housing, substance use, and mental health programs that may not otherwise be available to them. Secondly, entering periods of protracted or intense mental health crisis may reopen pathways into unstable housing and homelessness by activating undesirable institutional responses that conflict with young people's desire for self-determination in relation to their care. This study underscores that supportive housing should be part of a broader youth focused system of housing and care that seeks to address the needs of young people before they enter states of crisis.

The POP (Permanent Supportive Housing Overdose Prevention) Study: protocol for a hybrid type 3 stepped-wedge cluster randomized controlled trial

BACKGROUND

Permanent supportive housing (PSH)-subsidized housing paired with support services such as case management-is a key part of national strategic plans to end homelessness. PSH tenants face high overdose risk due to a confluence of individual and environmental risk factors, yet little research has examined overdose prevention in PSH.

METHODS

We describe the protocol for a hybrid type 3 stepped-wedge cluster randomized controlled trial (RCT) of overdose prevention practice implementation in PSH. We adapted evidence-based overdose prevention practices and implementation strategies for PSH using input from stakeholder focus groups. The trial will include 20 PSH buildings (with building size ranging from 20 to over 150 tenants) across New York City and New York's Capital Region. Buildings will be randomized to one of four 6-month intervention waves during which they will receive a package of implementation support including training in using a PSH Overdose Prevention (POP) Toolkit, time-limited practice facilitation, and learning collaboratives delivered to staff and tenant implementation champions appointed by each building. The primary outcome is building-level fidelity to a defined list of overdose prevention practices. Secondary and exploratory implementation and effectiveness outcomes will be examined using PSH staff and tenant survey questionnaires, and analysis of tenant Medicaid data. We will explore factors related to implementation success, including barriers and facilitators, using qualitative interviews with key stakeholders. The project is being conducted through an academic-community partnership, and an Advisory Board including PSH tenants and other key stakeholders will be engaged in all stages of the project.

DISCUSSION

We describe the protocol for a hybrid type 3 stepped-wedge cluster RCT of overdose prevention practice implementation in PSH. This study will be the first controlled trial of overdose prevention implementation in PSH settings. The research will make a significant impact by testing and informing future implementation strategies to prevent overdose for a population at particularly high risk for overdose mortality. Findings from this PSH-focused research are expected to be broadly applicable to other housing settings and settings serving people experiencing homelessness.

TRIAL REGISTRATION

ClinicalTrials.gov, NCT05786222 , registered 27 March 2023.

Exploring the effect of case management in homelessness per components: A systematic review of effectiveness and implementation, with meta-analysis and thematic synthesis

Background

Adequate housing is a basic human right. The many millions of people experiencing homelessness (PEH) have a lower life expectancy and more physical and mental health problems. Practical and effective interventions to provide appropriate housing are a public health priority.

Objectives

To summarise the best available evidence relating to the components of case-management interventions for PEH via a mixed methods review that explored both the effectiveness of interventions and factors that may influence its impact.

Search Methods

We searched 10 bibliographic databases from 1990 to March 2021. We also included studies from Campbell Collaboration Evidence and Gap Maps and searched 28 web sites. Reference lists of included papers and systematic reviews were examined and experts contacted for additional studies.

Selection Criteria

We included all randomised and non-randomised study designs exploring case management interventions where a comparison group was used. The primary outcome of interest was homelessness. Secondary outcomes included health, wellbeing, employment and costs. We also included all studies where data were collected on views and experiences that may impact on implementation.

Data Collection and Analysis

We assessed risk of bias using tools developed by the Campbell Collaboration. We conducted meta-analyses of the intervention studies where possible and carried out a framework synthesis of a set of implementation studies identified by purposive sampling to represent the most 'rich' and 'thick' data.

Main Results

We included 64 intervention studies and 41 implementation studies. The evidence base was dominated by studies from the USA and Canada. Participants were largely (though not exclusively) people who were literally homeless, that is, living on the streets or in shelters, and who had additional support needs. Many studies were assessed as having a medium or high risk of bias. However, there was some consistency in outcomes across studies that improved confidence in the main findings.

Case Management and Housing Outcomes

Case management of any description was superior to usual care for homelessness outcomes (standardised mean difference [SMD] = -0.51 [95% confidence interval [CI]: -0.71, -0.30]; p < 0.01). For studies included in the meta-analyses, Housing First had the largest observed impact, followed by Assertive Community Treatment, Critical Time Intervention and Intensive Case Management. The only statistically significant difference was between Housing First and Intensive Case Management (SMD = -0.6 [-1.1, -0.1]; p = 0.03) at ≥12 months. There was not enough evidence to compare the above approaches with standard case management within the meta-analyses. A narrative comparison across all studies was inconclusive, though suggestive of a trend in favour of more intensive approaches.

Case Management and Mental Health Outcomes

The overall evidence suggested that case management of any description was not more or less effective compared to usual care for an individual's mental health (SMD = 0.02 [-0.15, 0.18]; p = 0.817).

Case Management and Other Outcomes

Based on meta-analyses, case management was superior to usual care for capability and wellbeing outcomes up to 1 year (an improvement of around one-third of an SMD; p < 0.01) but was not statistically significantly different for substance use outcomes, physical health, and employment.

Case Management Components

For homelessness outcomes, there was a non-significant trend for benefits to be greater in the medium term (≤3 years) compared to long term (>3 years) (SMD = -0.64 [-1.04, -0.24] vs. -0.27 [-0.53, 0]; p = 0.16) and for in-person meetings in comparison to mixed (in-person and remote) approaches (SMD = -0.73 [-1.25,-0.21]) versus -0.26 [-0.5,-0.02]; p = 0.13). There was no evidence from meta-analyses to suggest that an individual case manager led to better outcomes then a team, and interventions with no dedicated case manager may have better outcomes than those with a named case manager (SMD = -0.36 [-0.55, -0.18] vs. -1.00 [-2.00, 0.00]; p = 0.02). There was not enough evidence from meta-analysis to assess whether the case manager should have a professional qualification, or if frequency of contact, case manager availability or conditionality (barriers due to conditions attached to service provision) influenced outcomes. However, the main theme from implementation studies concerned barriers where conditions were attached to services.

Characteristics of Persons Experiencing Homelessness

No conclusions could be drawn from meta-analysis other than a trend for greater reductions in homelessness for persons with high complexity of need (two or more support needs in addition to homelessness) as compared to those with medium complexity of need (one additional support need); effect sizes were SMD = -0.61 [-0.91, -0.31] versus -0.36 [-0.68, -0.05]; p = 0.3.

The Broader Context of Delivery of Case Management Programmes

Other major themes from the implementation studies included the importance of interagency partnership; provision for non-housing support and training needs of PEH (such as independent living skills), intensive community support following the move to new housing; emotional support and training needs of case managers; and an emphasis on housing safety, security and choice.

Cost Effectiveness

The 12 studies with cost data provided contrasting results and no clear conclusions. Some case management costs may be largely off-set by reductions in the use of other services. Cost estimates from three North American studies were $45-52 for each additional day housed.

Authors' Conclusions

Case management interventions improve housing outcomes for PEH with one or more additional support needs, with more intense interventions leading to greater benefits. Those with greater support needs may gain greater benefit. There is also evidence for improvements to capabilities and wellbeing. Current approaches do not appear to lead to mental health benefits. In terms of case management components, there is evidence in support of a team approach and in-person meetings and, from the implementation evidence, that conditions associated with service provision should be minimised. The approach within Housing First could explain the finding that overall benefits may be greater than for other types of case management. Four of its principles were identified as key themes within the implementation studies: No conditionality, offer choice, provide an individualised approach and support community building. Recommendations for further research include an expansion of the research base outside North America and further exploration of case management components and intervention cost-effectiveness.

Housing and supportive services for substance use and self-efficacy among young mothers experiencing homelessness: A randomized controlled trial

AIMS

Homeless mothers with young children in their care contend with high rates of substance use and low self-efficacy. However, a limited number of studies have examined these outcomes associated with housing and supportive services.

DESIGN

Participants were randomly assigned to: (1) housing + support services (n = 80), (2) housing-only (n = 80), or (3) services as usual (SAU) (n = 80) and were re-assessed at 3-, 6-, 9- and 12-months postbaseline.

SETTINGS

The study recruited a community-based sample from homeless service agencies and advertisements in a large Midwestern city.

PARTICIPANTS

The study recruited two hundred forty (N = 240) women between the ages of 18 to 24 years, experiencing homelessness and with a substance use disorder (SUD) who also had a biological child under the age of 6 years in their care.

MEASUREMENTS

We measured frequency of alcohol and drug use using the Form 90 semi-structured interview, and self-efficacy using Pearlin and Schooler's (1978) 7-item Mastery Scale.

FINDINGS

Overall, mothers showed significant improvement in substance use and self-efficacy over time in each condition. However, as expected, patterns of change differentiated intervention groups with more mothers showing better substance use and self-efficacy outcomes in housing + supportive services than in SAU. Unexpectedly, more mothers in SAU showed better outcomes than those in housing-only.

CONCLUSIONS

Substance use decreased and self-efficacy increased over time, but patterns of change characterized the intervention groups. In particular, findings suggest that when providing housing to this population, supportive services should also be offered.

Public Health Interventions to Address Housing and Mental Health amongst Migrants from Culturally and Linguistically Diverse Backgrounds Living in High-Income Countries: A Scoping Review

Migrants from culturally and linguistically diverse (CaLD) backgrounds experience factors that may increase health inequities related to a range of determinants of health including housing and mental health. However, the intersection between mental health and housing for migrants is poorly understood. A scoping review searched four academic databases for concepts related to cultural and linguistic diversity, housing conditions, and public health interventions to address homelessness. A total of 49 articles were included and seven key themes identified: housing provision; mental health intersections and interventions; complexity and needs beyond housing; substance use; service provider and policy issues; the role of cultural and linguistic diversity; and consumer experience. The intersection of ethnicity with other social determinants of health and housing was highlighted though there were limited interventions tailored for migrants. Studies generally pointed to the positive impacts of Housing First. Other sub-themes emerged: social connection and community; shame, stigma, and discrimination; health and support requirements; and employment, financial assistance, and income. Consumer choice was identified as vital, along with the need for systemic anti-racism work and interventions. To support secure housing for migrants and mitigate mental health impacts, closer attention is required towards migration factors along with broader, tailored services complementing housing provision.

Assessing psychosocial distress associated with homelessness in Ghana: A springboard for interventional policy design

This study investigated the causes of homelessness in Ghana and associated psychosocial distress. A sample of 86 homeless participants listed perceived causes of their homelessness and completed measures of psychosocial distress, and 97 non-homeless participants completed the same measures psychosocial distress. Causes of homelessness among the participants included poverty (30.1%), migration (10.4%), unemployment (2.2%), parental demise (2.2%), parental neglect (0.5%), and parental divorce (0.5%). Multivariate analysis revealed higher psychosocial distress among the homeless than the non-homeless. Homeless females reported higher levels of stress and suicidality than their male counterparts. The study demonstrates the need for timely and effective implementation of interventions such as provision of affordable housing, financial assistance, job-creation, and skill training for the homeless directly related to known causes of homelessness and accounting for gender differences.

Comorbidity profiles of patients experiencing homelessness: A latent class analysis

Individuals experiencing homelessness are known to have increased rates of healthcare utilization when compared to the average patient population, often attributed to their complex health care needs and under or untreated comorbid conditions. With increasing focus on hospital readmissions among acute care settings, a better understanding of these comorbidity patterns and their impacts on acute care utilization could help improve quality of care. This study aims to identify distinct comorbidity profiles of homeless patients, and to explore the correlates of the identified comorbidity profiles and their impact on hospital readmission. This is a retrospective analysis using electronic health records (EHR) of patients experiencing homelessness encountered in the hospitals of ChristianaCare from 2015 to 2019 (N = 3445). Latent class analysis (LCA) was used to identify the comorbidity profiles of homeless patients. The mean age of the study population was 44-year, and the majority were male (63%). The most prevalent comorbid conditions were tobacco use (77%), followed by depression (58%), drug use disorder (56%), anxiety disorder (50%), hypertension (44%), and alcohol use disorder (43%). The LCA model identified 4 comorbidity classes-"relatively healthy" class with 31% of the patients, "medically-comorbid with SUD" class with 15% of the patients, "substance use disorder (SUD)" class with 39%, and "Medically comorbid" class with 15% of the patients. The Kaplan-Meir curves of probability of readmission against time from the index visits were significantly different for the four classes (p<0.001). The multivariable Cox proportional hazard model adjusted for age, sex, race, ethnicity, and insurance type showed that the hazard for readmission among patients in medically comorbid with SUD class is 3.16 (CI: 2.72, 3.67) times higher than the patients in the relatively healthy class.

Is the Availability of Direct-Acting Antivirals Associated with Increased Access to Hepatitis C Treatment for Homeless and Unstably Housed Veterans?

OBJECTIVE

Hepatitis C virus (HCV) treatment has experienced a rapid transformation in the USA. New direct-acting antiviral (DAA) medications make treatment easier, less toxic, and more successful (90% or greater viral cure) than prior, interferon-based HCV medications. We sought to determine whether DAAs may have improved access to HCV treatment for hard-to-reach populations such as the homeless.

METHODS

In a retrospective study of VA electronic medical record data, a cohort was created of 63,586 veterans with a positive HCV RNA or genotype test taken at any point from January 1, 2012, through December 31, 2016. Patient data were examined for up to 5 years using a discrete time survival model to assess the relationship between their housing status and receipt of HCV medications in 6-month time periods in both the interferon and DAA eras.

RESULTS

In the interferon era, the probability of HCV treatment in a given 6-month window among housed veterans, at 6.2% (95% CI: 5.3-7.1%) was significantly higher than among veterans who were homeless or unstably housed; for example, among currently homeless veterans, the probability of treatment initiation, in a given 6-month window, was 2.6% (95% CI: 1.9-3.3%). With the arrival of DAAs, each housing category had an increased probability of treatment initiation. For housed veterans, the probability was 8.6% (95% CI: 8.3-8.9%) while for currently homeless veterans, it was 6.3% (95% CI: 5.7-6.9%).

CONCLUSIONS

We found a clear indication that the likelihood of treatment initiation was greater for all veterans in the DAA era as compared to the interferon era. However, disparities in treatment initiation rates between housed and homeless veterans that were observed in the interferon era persisted in the DAA era.

Factors That Influence Quality of Life in People Experiencing Homelessness: A Systematic Mixed Studies Review

BACKGROUND

An emerging category of morbidity in research among people experiencing homelessness (PEH) is quality of life (QoL). The Commission on Social Determinants of Health (CSDH) framework was used to explain the relationship between the resulting factors and their impact on QoL among PEH.

AIMS

The purpose of this systematic mixed studies review was to explore the factors that are associated with QoL among homeless individuals.

METHOD

A systematic mixed studies review was conducted using CINAHL, Medline, PubMed, and SocIndex databases. Quantitative, qualitative, and mixed methods studies were included and synthesized employing results-based convergent synthesis design.

RESULTS

The initial search resulted in 757 studies with 55 studies meeting the inclusion criteria. Thematic analysis revealed themes influencing QoL among PEH categorized by the CSDH determinants of structural, social cohesion and social capital, and intermediary determinants. Among these themes, higher social status, strong relationships, better reported physical and mental health, and a positive life outlook were associated with increased QoL. Social isolation, substance use, poorer life outlook, increased years spent homeless, and perceived quality of housing were associated with decreased QoL. Age, sex, and housing programs revealed inconsistent results on QoL.

CONCLUSIONS

While the factors presented in this review indicate some consistent relationships with QoL in PEH, this review has shown QoL among this population is complex and multifactorial. Future research should focus on relationships between the CSDH determinants, particularly the psychosocial factors and the QoL priorities defined by PEH, and how they may influence QoL among PEH.

The physical and mental health effects of housing homeless people: A systematic review

Housing is a significant determinant of health and is widely accepted as a key solution to address some of the health disparities that exist among the homeless. It is estimated that 150 million people worldwide are homeless, and approximately 1.8 billion lack adequate housing. However, understanding of how housing has a positive impact on the health of the homeless remains unclear and underdeveloped. This systematic review investigates intervention studies that report on the physical and mental health effects of housing homeless persons. A search of PubMed, PsycINFO, EBSCOHost-Academic Search Complete and the Cochrane Library was conducted for peer-reviewed articles published in English from 1999 to 2020 that had a combination of at least one housing intervention and health outcome, with a homeless sample. Three previous reviews and 24 studies were included for analysis. Most of the studies (n = 20) encompassed permanent supportive housing interventions that emphasised placing homeless people with mental illness directly into affordable housing with access to support services. The primary health outcomes reported were general physical and mental health, well-being, and quality of life. Despite inconsistent findings and significant issues identified in the reviewed literature, housing (in the short term) improves some aspects of health in homeless populations with human immunodeficiency virus, anxiety and depression.

Harm reduction outcomes and practices in Housing First: A mixed-methods systematic review

BACKGROUND

Harm reduction is a central tenet of Housing First. As the intervention has been shown to stably house people experiencing chronic homelessness across the lifespan with complex behavioural health needs, it is critical to understand the harm reduction outcomes and practices in Housing First.

METHODS

A systematic review following PRISMA guidelines was conducted of five databases: PsycINFO, MEDLINE, Embase, CINAHL, and Google Scholar. Harm reduction outcomes and practices in Housing First were examined in four domains: substance-related harms, viral health, sexual health, and harm reduction service use.

RESULTS

A total of 35 articles were included in the review, 23 of which examined harm reduction outcomes and 12 of which investigated harm reduction practices in Housing First. Harm reduction outcome studies focused mostly on nonspecific substance use problems, with Housing First being found to have minimal effects in this domain. More severe harms, such as delirium tremens and substance use-related deaths, have been minimally explored, though preliminary evidence is promising. Viral health, sexual health, and harm reduction service use outcomes were the focus of few studies. Research on harm reduction practices highlighted that Housing First providers experience both flexibility and ambiguity in their work using a harm reduction approach, and the importance of empathetic working relationships for engagement in harm reduction work.

CONCLUSIONS

Harm reduction outcomes in Housing First remain underexamined and any conclusions of the intervention's impacts in this domain would be premature. Effective harm reduction practices in Housing First require strong working relationships between staff and tenants.

Exploring factors related to supportive housing tenure and stability for people with serious mental illness

Overall, the retention of people with serious mental illness (SMI) in supportive housing is high. However, some supportive housing settings report average stays of only 15 months, and others report declines in housing retention over time. Many studies report variables associated with supportive housing stability and tenure, but there are few extensive, focused investigations on the subject. Hence, a literature review was conducted to investigate factors associated with supportive housing stability and tenure among people with SMI. The review of the included 28 papers reveals that the factors associated with supportive housing stability and tenure fell into two general categories of individual factors (including psychiatric factors and prior homelessness), and contextual factors (including program characteristics and sense of community and social support). In conclusion, further focus on contextual factors, as well as a potential reframing of individual factors as contextual, may be helpful in addressing issues related to supportive housing stability and tenure for people with SMI.

A comprehensive review of prioritised interventions to improve the health and wellbeing of persons with lived experience of homelessness

Background

Homelessness has emerged as a public health priority, with growing numbers of vulnerable populations despite advances in social welfare. In February 2020, the United Nations passed a historic resolution, identifying the need to adopt social-protection systems and ensure access to safe and affordable housing for all. The establishment of housing stability is a critical outcome that intersects with other social inequities. Prior research has shown that in comparison to the general population, people experiencing homelessness have higher rates of infectious diseases, chronic illnesses, and mental-health disorders, along with disproportionately poorer outcomes. Hence, there is an urgent need to identify effective interventions to improve the lives of people living with homelessness.

Objectives

The objective of this systematic review is to identify, appraise, and synthesise the best available evidence on the benefits and cost-effectiveness of interventions to improve the health and social outcomes of people experiencing homelessness.

Search Methods

In consultation with an information scientist, we searched nine bibliographic databases, including Medline, EMBASE, and Cochrane CENTRAL, from database inception to February 10, 2020 using keywords and MeSH terms. We conducted a focused grey literature search and consulted experts for additional studies.

Selection Criteria

Teams of two reviewers independently screened studies against our inclusion criteria. We included randomised control trials (RCTs) and quasi-experimental studies conducted among populations experiencing homelessness in high-income countries. Eligible interventions included permanent supportive housing (PSH), income assistance, standard case management (SCM), peer support, mental health interventions such as assertive community treatment (ACT), intensive case management (ICM), critical time intervention (CTI) and injectable antipsychotics, and substance-use interventions, including supervised consumption facilities (SCFs), managed alcohol programmes and opioid agonist therapy. Outcomes of interest were housing stability, mental health, quality of life, substance use, hospitalisations, employment and income.

Data Collection and Analysis

Teams of two reviewers extracted data in duplicate and independently. We assessed risk of bias using the Cochrane Risk of Bias tool. We performed our statistical analyses using RevMan 5.3. For dichotomous data, we used odds ratios and risk ratios with 95% confidence intervals. For continuous data, we used the mean difference (MD) with a 95% CI if the outcomes were measured in the same way between trials. We used the standardised mean difference with a 95% CI to combine trials that measured the same outcome but used different methods of measurement. Whenever possible, we pooled effect estimates using a random-effects model.

Main Results

The search resulted in 15,889 citations. We included 86 studies (128 citations) that examined the effectiveness and/or cost-effectiveness of interventions for people with lived experience of homelessness. Studies were conducted in the United States (73), Canada (8), United Kingdom (2), the Netherlands (2) and Australia (1). The studies were of low to moderate certainty, with several concerns regarding the risk of bias. PSH was found to have significant benefits on housing stability as compared to usual care. These benefits impacted both high- and moderate-needs populations with significant cimorbid mental illness and substance-use disorders. PSH may also reduce emergency department visits and days spent hospitalised. Most studies found no significant benefit of PSH on mental-health or substance-use outcomes. The effect on quality of life was also mixed and unclear. In one study, PSH resulted in lower odds of obtaining employment. The effect on income showed no significant differences. Income assistance appeared to have some benefits in improving housing stability, particularly in the form of rental subsidies. Although short-term improvement in depression and perceived stress levels were reported, no evidence of the long-term effect on mental health measures was found. No consistent impact on the outcomes of quality of life, substance use, hospitalisations, employment status, or earned income could be detected when compared with usual services. SCM interventions may have a small beneficial effect on housing stability, though results were mixed. Results for peer support interventions were also mixed, though no benefit was noted in housing stability specifically. Mental health interventions (ICM, ACT, CTI) appeared to reduce the number of days homeless and had varied effects on psychiatric symptoms, quality of life, and substance use over time. Cost analyses of PSH interventions reported mixed results. Seven studies showed that PSH interventions were associated with increased cost to payers and that the cost of the interventions were only partially offset by savings in medical- and social-services costs. Six studies revealed that PSH interventions saved the payers money. Two studies focused on the cost-effectiveness of income-assistance interventions. For each additional day housed, clients who received income assistance incurred additional costs of US$45 (95% CI, -$19, -$108) from the societal perspective. In addition, the benefits gained from temporary financial assistance were found to outweigh the costs, with a net savings of US$20,548. The economic implications of case management interventions (SCM, ICM, ACT, CTI) was highly uncertain. SCM clients were found to incur higher costs than those receiving the usual care. For ICM, all included studies suggested that the intervention may be cost-offset or cost-effective. Regarding ACT, included studies consistently revealed that ACT saved payers money and improved health outcomes than usual care. Despite having comparable costs (US$52,574 vs. US$51,749), CTI led to greater nonhomeless nights (508 vs. 450 nights) compared to usual services.

Authors' Conclusions

PSH interventions improved housing stability for people living with homelessness. High-intensity case management and income-assistance interventions may also benefit housing stability. The majority of included interventions inconsistently detected benefits for mental health, quality of life, substance use, employment and income. These results have important implications for public health, social policy, and community programme implementation. The COVID-19 pandemic has highlighted the urgent need to tackle systemic inequality and address social determinants of health. Our review provides timely evidence on PSH, income assistance, and mental health interventions as a means of improving housing stability. PSH has major cost and policy implications and this approach could play a key role in ending homelessness. Evidence-based reviews like this one can guide practice and outcome research and contribute to advancing international networks committed to solving homelessness.

National trends in substance use treatment admissions for opioid use disorder among adults experiencing homelessness

OBJECTIVE

People experiencing homelessness (PEH) have high rates of substance use, and homelessness may be an important driver of health disparities in the opioid overdose epidemic. However, few studies focus on homelessness among the opioid use disorder (OUD) treatment population. We examine national-level trends in substance use treatment admissions among PEH with OUD.

METHODS

This study used data from first-time treatment admissions in the United States from the Treatment Episode Data Set: Admissions (TEDS-A) to examine characteristics and trends of adults experiencing homelessness who entered state-licensed substance use treatment programs for OUD from 2013 to 2017. We used chi-squared analyses to examine changes in characteristics of this population over time and logistic regression to assess characteristics associated with receipt of medications for opioid use disorder (MOUD) among PEH.

RESULTS

Among all adults with OUD entering specialty treatment from 2013 to 2017, 12.5% reported experiencing homelessness. Compared to individuals not experiencing homelessness, PEH were more likely to be male, inject opioids, use cocaine or methamphetamine, and enter into residential detoxification treatment. PEH were less likely to enter outpatient treatment or receive MOUD. From 2013 to 2017, significant increases occurred in the proportion of PEH who had co-occurring psychiatric problems and used methamphetamines. Over time, treatment type shifted significantly from residential detoxification to outpatient treatment. Receipt of MOUD increased among PEH over time (13.7% to 25.2%), but lagged behind increases among individuals not experiencing homelessness. Among PEH, being older was associated with receiving MOUD, while concurrent methamphetamine use [adjusted odds ratio (AOR) 0.63; 95% CI 0.58, 0.69] and living in the southern United States (AOR 0.27; 95% CI 0.25, 0.30) were associated with not receiving MOUD.

DISCUSSION

The proportion of PEH with OUD who receive medications as part of treatment increased over time, but three quarters of PEH entering treatment still do not receive this highest standard in evidence-based care. The sharp increase observed in concomitant methamphetamine use in this population is concerning and has implications for treatment.

Initial Effectiveness Evaluation of the Unified Protocol for Transdiagnostic Treatment of Emotional Disorders for Homeless Women

The purpose of this study is to evaluate the effectiveness of the Unified Protocol for Transdiagnostic Treatment of Emotional Disorders adapted for homeless women (UPHW). Eighty-one homeless women participated in this single-blinded quasi-experimental clinical trial, involving up to 12 sessions of group treatment, and 3-and 6-month follow-ups. The participants received either immediate treatment with the UPHW (n = 46) or delayed treatment, following a 12-week wait-list control period (WLC; n = 35). Primary outcomes included depression and anxiety. Secondary measures comprised positive and negative affect, psychological well-being, health perception, and social support. The UPHW resulted in significant improvement on measures of anxiety, depression and negative affect. Improvements in anxiety and depression were maintained over a 3-month follow-up period, but not at 6-month. The reliability of the clinical changes showed significant differences between UPHW and WLC for depression. Moreover, the inter-session assessment in the UPHW group showed a linear trend reduction for depression and anxiety scores along the 12 sessions. The clinical implications on the UPHW in social settings are also discussed.

Finding home: Community integration experiences of formerly homeless women with problematic substance use in Housing First

AIMS

This study explored community integration among women participating in a Housing First program. Physical, social, and psychological dimensions of community integration were examined.

METHODS

This study used neighborhood walk-along and photo-elicitation interviews to explore 16 formerly homeless women's experiences of community integration.

RESULTS

Participants described limited community integration. Health, poverty, service inaccessibility, and safety concerns shaped how they took part in activities in their neighborhoods. Participants primarily socialized with people in their buildings, though some preferred to keep to themselves. There was minimal sense of neighborhood belonging, with participants not interested in belonging to a community and being judged by others.

CONCLUSION

Housing First promoted housing stability but did not contribute to community integration. Participants did not express a strong desire to integrate in their communities. Future research should consider the extent to which community integration remains a priority for marginalized populations, such as formerly homeless women.

Effectiveness of permanent supportive housing and income assistance interventions for homeless individuals in high-income countries: a systematic review

BACKGROUND

Permanent supportive housing and income assistance are valuable interventions for homeless individuals. Homelessness can reduce physical and social wellbeing, presenting public health risks for infectious diseases, disability, and death. We did a systematic review, meta-analysis, and narrative synthesis to investigate the effectiveness and cost-effectiveness of permanent supportive housing and income interventions on the health and social wellbeing of individuals who are homeless in high-income countries.

METHODS

We searched MEDLINE, Embase, CINAHL, PsycINFO, Epistemonikos, NIHR-HTA, NHS EED, DARE, and the Cochrane Central Register of Controlled Trials from database inception to Feb 10, 2020, for studies on permanent supportive housing and income interventions for homeless populations. We included only randomised controlled trials, quasi-experimental studies, and cost-effectiveness studies from high-income countries that reported at least one outcome of interest (housing stability, mental health, quality of life, substance use, hospital admission, earned income, or employment). We screened studies using a standardised data collection form and pooled data from published studies. We synthesised results using random effects meta-analysis and narrative synthesis. We assessed certainty of the evidence using the Grading of Recommendations Assessment, Development, and Evaluation approach.

FINDINGS

Our search identified 15 908 citations, of which 72 articles were included for analysis (15 studies on permanent supportive housing across 41 publications, ten studies on income interventions across 15 publications, and 21 publications on cost or cost-effectiveness). Permanent supportive housing interventions increased long-term (6 year) housing stability for participants with moderate support needs (one study; rate ratio [RR] 1·13 [95% CI 1·01-1·26]) and high support needs (RR 1·42 [1·19-1·69]) when compared with usual care. Permanent supportive housing had no measurable effect on the severity of psychiatric symptoms (ten studies), substance use (nine studies), income (two studies), or employment outcomes (one study) when compared with usual social services. Income interventions, particularly housing subsidies with case management, showed long-term improvements in the number of days stably housed (one study; mean difference at 3 years between intervention and usual services 8·58 days; p<0·004), whereas the effects on mental health and employment outcomes were unclear.

INTERPRETATION

Permanent supportive housing and income assistance interventions were effective in reducing homelessness and achieving housing stability. Future research should focus on the long-term effects of housing and income interventions on physical and mental health, substance use, and quality-of-life outcomes.

FUNDING

Inner City Health Associates.

Improved Rehabilitation Outcomes for Persons With and Without Problematic Substance Use After 2 Years With Assertive Community Treatment-A Prospective Study of Patients With Severe Mental Illness in 12 Norwegian ACT Teams

Background: Persons with severe mental illness often face difficulties in accessing and receiving adequate services enabling them to live independently. Many have co-occurring substance use problems that increase the risk of adverse outcomes. Community-based service models have been implemented around the world, including assertive community treatment (ACT), but the knowledge of rehabilitation outcomes in different subgroups is limited. We aimed to explore rehabilitation outcomes among patients suffering severe mental illness with and without substance use problems who had received ACT services for at least 2 years. Additionally, we compared differences in changes between the two groups. Methods: A total of 142 patients who received services for 2 years from the first 12 Norwegian ACT teams were included. Eighty-four (59%) had problematic substance use, while 58 (41%) did not. Data regarding housing, activity, symptoms, functioning, and subjective quality of life were collected upon enrollment into ACT and at 2 years of follow-up. Clinician-rated scales and self-report questionnaires were used. Changes within the two groups and differences in change between the groups were assessed using generalized linear mixed models. Results: Both groups were more likely to have good housing, higher level of functioning, and less anxiety and depressive symptoms after 2 years. The odds of good housing among participants with problematic substance use increased only after adjusting for age and gender. Participants with problematic substance use had less severe symptoms, particularly negative and manic symptoms, while participants without problematic substance use reported improved satisfaction with life in general. Neither group experienced a change in having a meaningful daily activity, positive symptoms, practical and social functioning, or subjective quality of life. The reduction of manic symptoms in the substance use group was the only difference between the groups. Conclusion: After 2 years, patients with and without problematic substance use experienced improvements in several important domains. Furthermore, the improvements were similar in both groups for most outcomes. This may suggest that ACT has a place in the continued effort toward integrated and comprehensive community services empowering patients with severe mental illness to achieve and sustain an independent life, including marginalized groups with severe substance use.

Community Interventions to Promote Mental Health and Social Equity

(Reprinted with permission from Current Psychiatry Reports (2020) 21: 35).

Assessing the relationship between housing and health among medically complex, chronically homeless individuals experiencing frequent hospital use in the United States

In the United States and abroad, health systems have begun to address housing insecurity through programs that adhere to the Housing First model. The model provides permanent supportive housing without disqualification due to current mental health problems or substance use, along with optional case management services. This study used qualitative methods to explore how housing stability affected chronic disease management and social and community relationships among individuals with complex health and social needs and patterns of high hospital utilisation who were housed as part of a scattered-site Housing First program in a mid-size city in the northeastern United States. 26 individual, semi-structured interviews were conducted with Housing First clients in their homes or day program sites between March and July 2017. Interviews were digitally recorded and transcripts were analysed using a qualitative descriptive methodology until thematic saturation was reached. Findings suggest that housing provided the physical location to manage the logistical aspects of care for these clients, and an environment where they were better able to focus on their health and wellness. Study participants reported less frequent use of emergency services and more regular interaction with primary care providers. Additionally, case managers' role in connecting clients to behavioural health services removed barriers to care that clients had previously faced. Housing also facilitated reconnection with family and friends whose relationships with participants had become strained or distant. Changes to physical and social communities sometimes resulted in experiences of stigmatisation and exclusion, especially for clients who moved to areas with less racial and socioeconomic diversity, but participation in the program promoted an increased sense of safety and security for many clients.

A Place to Call Home: Hearing the Perspectives of People Living with Homelessness and Mental Illness Through Service Evaluation

There is an ongoing need to incorporate the perspectives of people in supported community housing to improve the provision of integrated mental health services. This study aimed to explore the satisfaction and experiences of people who have received supported housing and mental health services. We conducted a retrospective, mixed methods study using a data mining approach, analyzing consumer satisfaction survey responses collected on discharge from the service over a 7-year period. Responses from 178 consumers aged between 20 and 62 years were included. Quantitative results indicated that consumers rated the quality of services as relatively high. Analysis of qualitative responses identified seven themes describing people's views on how they had benefitted from the service. Consumers reported benefits in terms of practical and emotional supports, responsiveness of the team to their needs, socialization and community integration, personal growth and recovery, and finding 'my place'. Themes of learning and skills development were also important. These results suggest that practical support, together with emotional expressions of care and compassion are most valued by people who participated in this service. This research has implications for service evaluation and for future research, which may include focusing on the key role of connectedness, 'my place' and hope for recovery.

Community Interventions to Promote Mental Health and Social Equity

PURPOSE OF REVIEW

We review recent community interventions to promote mental health and social equity. We define community interventions as those that involve multi-sector partnerships, emphasize community members as integral to the intervention, and/or deliver services in community settings. We examine literature in seven topic areas: collaborative care, early psychosis, school-based interventions, homelessness, criminal justice, global mental health, and mental health promotion/prevention. We adapt the social-ecological model for health promotion and provide a framework for understanding the actions of community interventions.

RECENT FINDINGS

There are recent examples of effective interventions in each topic area. The majority of interventions focus on individual, family/interpersonal, and program/institutional social-ecological levels, with few intervening on whole communities or involving multiple non-healthcare sectors. Findings from many studies reinforce the interplay among mental health, interpersonal relationships, and social determinants of health. There is evidence for the effectiveness of community interventions for improving mental health and some social outcomes across social-ecological levels. Studies indicate the importance of ongoing resources and training to maintain long-term outcomes, explicit attention to ethics and processes to foster equitable partnerships, and policy reform to support sustainable healthcare-community collaborations.

Associations of alcohol use disorder, alcohol use, housing, and service use in a homeless sample of 255 individuals followed over 2 years

BACKGROUND

Homeless individuals with alcohol use disorders have multiple comorbidities and therefore various service needs. Despite need for services, homeless individuals face numerous barriers to treatment. Little is known about the associations of specific services in relation to homelessness in the context of alcohol problems. The current study analyzed 2-year prospective longitudinal data on a homeless sample, examining relationships between alcohol use disorder, alcohol use, housing status, and service use over time.

METHODS

Two hundred fifty-five of 400 individuals recruited systematically from shelters and street locations completed 3 annual assessments (69% completion). Data on lifetime and current psychiatric disorders, housing status, and past-year service use were obtained and merged with service use data gathered from local agencies. Generalized estimating equation (GEE) models were created to predict dependent outcome variables of stable housing, alcohol use, and service use in both follow-up years.

RESULTS

Lifetime alcohol use disorder was positively associated with substance and medical service use. Alcohol problems did not hinder attainment of stable housing, and placement in housing did not necessarily increase risk for alcohol use. Stable housing was negatively associated with psychiatric and substance service use. In the second year, when alcohol use was finally associated with receiving substance services, it appears that these services provided a gateway to psychiatric services. The psychiatric services in turn appeared to provide a gateway to medical services.

CONCLUSIONS

Alcohol use behaved differently compared with lifetime alcohol use disorder in relation to service use. Lack of association between alcohol use and housing supports Housing First policy. Obtaining housing may have ameliorative effects on mental health, diminishing perceived need for psychiatric services. Services may also be more accessible during homelessness. Obtaining substance treatment may provide a gateway for those who use alcohol after becoming homeless to connect with psychiatric and medical services, informing policy and practice.

Night beds in psychosocial attention care centers for alcohol and drugs: analysis and characterization

OBJECTIVE

To analyze and characterize the use of night beds in a Psychosocial Attention Care Center for Alcohol and Drugs (Centro de Atenção Psicossocial Álcool e Drogas - CAPS ad).

METHOD

It is a quantitative, documental, descriptive and retrospective study. Data were gathered from 565 medical records. An analysis of continuous variables was performed.

RESULTS

When admitted to the beds, most users (87.6%) consumed multiple substances daily and were vulnerable, specially in street situation (68.3%). These users were admitted on an average of two times, undergoing a previous evaluation by the nurse (85.8%), usually for detoxication or due to the vulnerable condition. They stayed in the center for an average of seven days and 31.1% did not finish what was proposed. For a few cases, hospital support was needed. Overall, discharges were planned, but the return happened without booking.

CONCLUSION

Social issues cut through the use of night beds, however, it is a therapeutic resource that meets significant demands and is present in the daily lives of vulnerable users as a comprehensive care.

Social networks and substance use after transitioning into permanentsupportive housing

BACKGROUND

Substance use disorders are common among persons experiencing homelessness, and research has identified social networks as important correlates of substance use in this population. Permanent supportive housing (PSH), particularly Housing First, which uses a harm reduction model not requiring substance abstinence, is a key solution for ending homelessness. However, conflicting evidence exists regarding the associations between moving into PSH and changes in substance use, and there is limited understanding of how networks may influence such changes.

METHODS

Using observational, longitudinal data from 421 persons before they moved in and over their first year in PSH (collected as part of a HIV-risk study), this paper assesses substance use change (alcohol, marijuana, and illicit drugs) and associations between perceived network characteristics and individual substance use.

RESULTS

Substance use remained relatively stable among participants over their first year living in PSH, although illicit substance use reduced somewhat at six months compared to baseline levels (from 18.5%-14.5%) and marijuana use increased slightly at 12 months (from 26.6% at baseline to 32.9%). Substance use among social network members was consistently associated with individual-level substance use, both cross-sectionally and longitudinally. Specific network substance use characteristics, such as proximity, location met, and social support, had differential relationships with particular substance types.

CONCLUSIONS

These findings provide longitudinal evidence that changes within substance-using social networks are associated with subsequent changes in individual use and underscore the importance of interventions aimed at promoting positive social relationships for formerly homeless persons and improving PSH's social environments.

Cancer screening in the homeless population

Annually, 100 million people experience homelessness worldwide. Most adults that are struggling with homelessness are living to age 50 years or older and need age-appropriate screening for cancer. Cancer-related death in homeless adults is twice as high as the average in the adult population in the USA. However, few studies have examined the rates of and barriers to cancer screening in homeless people. This Review explores cancer-related health disparities between homeless people and the general population by providing a review of data and definitions relating to homelessness, an analysis of barriers to screening in this population, and a discussion of the current and potential interventions and strategies to improve cancer screening in homeless individuals. Recommendations include implementing appropriate data collection methods for this population, supporting cancer screening in places where homeless people usually access care, assessing the effectiveness of approaches to increasing cancer screening in homeless people, and addressing adequate housing as a fundamental social factor.