A prospective study of the associations among housing status and costs of services in a homeless population

Assessing the Use of Data Systems to Estimate Return-on-Investment of Behavioral Healthcare Interventions: Opportunities and Barriers

To improve access to and quality of affordable behavioral healthcare, there is a need for more research to identify which interventions can generate long-term, societal return-on-investment (ROI). Barriers to ROI studies in the behavioral health sector were explored by conducting semi-structured interviews with individuals from key stakeholder groups at state and national behavioral health-related organizations. Limited operating budgets, state-based payer systems, the lack of financial support, privacy laws, and other unique experiences of behavioral health providers and patients were identified as important factors that affect the collection and utilization of data. To comprehensively assess ROI of interventions, it is necessary to improve standardization and data infrastructure across multiple health and non-health systems and clarify or address legal, regulatory, and commercial conflicts.

A prospective longitudinal study of child custody status among homeless population mothers

Most women in homeless populations are mothers, the majority being single mothers. Retaining child custody is challenging in homeless circumstances. Prospective longitudinal studies are needed to follow the moving pieces of housing and child custody in the context carefully-assessed psychiatric and substance use disorders over time. A 2-year prospective longitudinal study of an epidemiologic sample of individuals with literal homelessness included 59 mothers. Annual assessments included structured diagnostic interviews, detailed assessment of homeless circumstances, urine drug testing, and service use documented by both self report and data from agencies serving these individuals. More than one-third of the mothers consistently lacked child custody throughout the course of the study and the proportions of mothers with child custody did not increase significantly. Nearly one-half of the mothers had a current year drug use disorder at baseline, including cocaine disorder in most. Continuing lack of child custody over time was associated with longitudinal lack of housing and use of drugs. The importance of drug use disorders in the longitudinal course of child custody points to a critical need for formal substance abuse treatment, not just initiatives to decrease drug use, in helping mothers regain and maintain custody of their children.

Typology of Currently or Formerly Homeless Individuals Based on Their Use of Health and Social Services

This study identified profiles among 455 currently or formerly homeless individuals in Quebec (Canada), based on health and social service use. Using latent class analysis, four profiles were identified that grouped individuals with: (1) few health problems, and using few case managers and family doctors, but with high frequency of psychiatric consultations, emergency department (ED) visits and hospitalizations; (2) chronic physical illnesses, having case managers and family doctors, but low frequency of ED visits and hospitalizations; (3) moderate health problems and little service use; and (4) multiple and complex health problems and high frequency of service use. These profiles suggest the following recommendations to more adequately meet patient needs: regarding Class 1, improved outreach services, more ED liaison nurses and peer navigation; Class 2: more family doctors and case managers; Class 3: higher family doctors; and Class 4: more assertive or intensive case management, harm reduction and permanent housing resources.

A classification model of homelessness using integrated administrative data: Implications for targeting interventions to improve the housing status, health and well-being of a highly vulnerable population

Homelessness is poorly captured in most administrative data sets making it difficult to understand how, when, and where this population can be better served. This study sought to develop and validate a classification model of homelessness. Our sample included 5,050,639 individuals aged 11 years and older who were included in a linked dataset of administrative records from multiple state-maintained databases in Massachusetts for the period from 2011-2015. We used logistic regression to develop a classification model with 94 predictors and subsequently tested its performance. The model had high specificity (95.4%), moderate sensitivity (77.8%) for predicting known cases of homelessness, and excellent classification properties (area under the receiver operating curve 0.94; balanced accuracy 86.4%). To demonstrate the potential opportunity that exists for using such a modeling approach to target interventions to mitigate the risk of an adverse health outcome, we also estimated the association between model predicted homeless status and fatal opioid overdoses, finding that model predicted homeless status was associated with a nearly 23-fold increase in the risk of fatal opioid overdose. This study provides a novel approach for identifying homelessness using integrated administrative data. The strong performance of our model underscores the potential value of linking data from multiple service systems to improve the identification of housing instability and to assist government in developing programs that seek to improve health and other outcomes for homeless individuals.

Barriers and facilitators to retaining a cohort of street-based cisgender female sex workers recruited in Baltimore, Maryland, USA: results from the SAPPHIRE study

BACKGROUND

Despite experiencing HIV/STIs, violence, and other morbidities at higher rates than the general public, street-based female sex workers are often absent from public health research and surveillance due to the difficulty and high costs associated with engagement and retention. The current study builds on existing literature by examining barriers and facilitators of retaining a street-based cohort of cisgender female sex workers recruited in a mobile setting in Baltimore, Maryland who participated in the SAPPHIRE study. Participants completed interviews and sexual health testing at baseline, 3-, 6-, 9-, and 12-months.

METHODS

Retention strategies are described and discussed in light of their benefits and challenges. Strategies included collecting several forms of participant contact information, maintaining an extensive field presence by data collectors, conducting social media outreach and public record searches, and providing cash and non-cash incentives. We also calculated raw and adjusted retention proportions at each follow-up period. Lastly, baseline sample characteristics were compared by number of completed visits across demographic, structural vulnerabilities, work environment, and substance use variables using F-tests and Pearson's chi-square tests.

RESULTS

Although there were drawbacks to each retention strategy, each method was useful in tandem in achieving a successful follow-up rate. While direct forms of contact such as phone calls, social media outreach, and email were useful for retaining more stable participants, less stable participants required extensive field-based efforts such as home and site visits that increase the likelihood of random encounters. Overall, adjusted retention exceeded 70% for the duration of the 12-month study. Participants who were younger, recently experienced homelessness, and injected drugs daily were less likely to have completed all or most follow-up visits.

CONCLUSION

Retention of street-based female sex workers required the simultaneous use of diverse retention strategies that were tailored to participant characteristics. With familiarity of the dynamic nature of the study population characteristics, resources can be appropriately allocated to strategies most likely to result in successful retention.

Homeless persons' experiences of health- and social care: A systematic integrative review

Homelessness is associated with high risks of morbidity and premature death. Many interventions aimed to improve physical and mental health exist, but do not reach the population of persons experiencing homelessness. Despite the widely reported unmet healthcare needs, more information about the barriers and facilitators that affect access to care for persons experiencing homelessness is needed. A systematic integrative review was performed to explore experiences and needs of health- and social care for persons experiencing homelessness. The following databases were searched: AMED, ASSIA, Academic Search Complete, CINAHL, Cochrane library, Nursing and Allied Database, PsycInfo, PubMed, Scopus and Web of Science Core Collection. Twenty-two studies met the inclusion criteria of empirical studies with adult persons experiencing homelessness, English language, and published 2008-2018. Fifty percent of the studies were of qualitative and quantitative design, respectively. Most studies (73%) were conducted in the United States (n=11) and Canada (n=5). The analysis resulted in three themes Unmet basic human needs, Interpersonal dimensions of access to care, and Structural and organizational aspects to meet needs. The findings highlight that persons in homelessness often must prioritize provision for basic human needs, such as finding shelter and food, over getting health- and social care. Bureaucracy and rigid opening hours, as well as discrimination and stigma, hinder these persons' access to health- and social care.

Longitudinal Cost of Services in a Homeless Sample with Cocaine Use Disorder

Homeless people with cocaine use disorder have multiple comorbidities and costly service needs. This study examined service costs associated with cocaine use and substance service use in substance, psychiatric, and medical service sectors. 127 homeless participants with cocaine use disorder were interviewed annually. Self-report and agency-report service use and cost data were combined. Pairwise comparisons were made with cocaine abstinence and substance service use in relation to mean and yearly proportional service costs in 3 service sectors. Among substance service users, achievement of abstinence was not associated with decreased substance service costs. Cocaine abstinence was associated with proportional reduction of substance service costs over time. Substance service use was associated with proportional reduction of psychiatric service costs over time among the abstinent subgroup. Conversely, substance service use was associated with continuing higher medical service expenditures in the abstinent subgroup and higher psychiatric service expenditures in those not abstinent. Homeless individuals who achieved cocaine abstinence after using substance services had decreased substance service expenditures. Individuals with continued substance service use had greater medical and psychiatric service costs. Policy based on maximizing benefits while minimizing costs appears insufficiently complex to incorporate the multiple needs and associated with costs of treating homeless populations.

Comparing the Utilization and Cost of Health Services between Veterans Experiencing Brief and Ongoing Episodes of Housing Instability

Housing instability is associated with costly patterns of health and behavioral health service use. However, little prior research has examined patterns of service use associated with higher costs among those experiencing ongoing housing instability. To address this gap, we compared inpatient and outpatient medical and behavioral health service utilization and costs between veterans experiencing brief and ongoing episodes of housing instability. We used data from a brief screening instrument for homelessness and housing instability that has been implemented throughout the US Department of Veterans Affairs (VA) health care system to identify a national sample of veterans experiencing housing instability. Veterans were classified as experiencing either brief or ongoing housing instability, based on two consecutive responses to the instrument, and we used a series of two-part regression models to conduct adjusted comparisons of costs between veterans experiencing brief and ongoing episodes of housing instability. Among 5794 veterans screening positive for housing instability, 4934 (85%) were experiencing brief and 860 (15%) ongoing instability. The average total annual incremental cost associated with ongoing versus brief episodes of housing instability was estimated at $7573, with the bulk of this difference found in inpatient services. Cost differences resulted more from a higher probability of service use among those experiencing ongoing episodes of housing instability than from higher costs among service users. Our findings suggest that VA programmatic efforts aimed at preventing extended episodes of housing instability could potentially result in substantial cost offsets for the VA health care system.