Housing insecurity among black women surviving intimate partner violence during the COVID-19 pandemic: an intersectional qualitative approach.

BACKGROUND: Housing instability is highly prevalent among intimate partner violence (IPV) survivors, and the coupling consequences of structural racism, sexism, classism, and the COVID-19 pandemic, may create more barriers to safe and adequate housing, specifically for Black women IPV survivors. In particular, the consequences of the COVID-19 pandemic had the potential to amplify disadvantages for Black women IPV survivors, yet very little research has acknowledged it. Therefore, the current study sought to assess the experiences of housing insecurity among Black women experiencing intimate partner violence (IPV) while navigating racism, sexism, and classism during the COVID-19 pandemic. METHODS: From January to April 2021, we conducted in-depth interviews with 50 Black women experiencing IPV in the United States. Guided by intersectionality, a hybrid thematic and interpretive phenomenological analytic approach was used to identify sociostructural factors shaping housing insecurity. RESULTS: Our findings demonstrate the various ways in which the COVID-19 pandemic shaped Black women IPV survivors' ability to obtain and sustain safe housing. We derived five themes to capture factors contributing to housing experiences: challenges with separate and unequal neighborhoods; pandemic-related economic inequalities; economic abuse limitations; and strategies to maintain housing. CONCLUSIONS: Obtaining and maintaining safe housing during the COVID-19 pandemic was difficult for Black women IPV survivors who were also navigating racism, sexism, and socioeconomic position. Interventions are needed to reduce the impact of these intersecting systems of oppression and power to facilitate the resources necessary for Black women IPV survivors to identify safe housing.

Estimation of place-based vulnerability scores for HIV viral non-suppression: an application leveraging data from a cohort of people with histories of using drugs.

The relationships between place (e.g., neighborhood) and HIV are commonly investigated. As measurements of place are multivariate, most studies apply some dimension reduction, resulting in one variable (or a small number of variables), which is then used to characterize place. Typical dimension reduction methods seek to capture the most variance of the raw items, resulting in a type of summary variable we call "disadvantage score". We propose to add a different type of summary variable, the "vulnerability score," to the toolbox of the researchers doing place and HIV research. The vulnerability score measures how place, as known through the raw measurements, is predictive of an outcome. It captures variation in place characteristics that matters most for the particular outcome. We demonstrate the estimation and utility of place-based vulnerability scores for HIV viral non-suppression, using data with complicated clustering from a cohort of people with histories of injecting drugs.

Virtual Implementation of a Photovoice Project With Youth in Baltimore During the COVID-19 Pandemic.

This article describes the virtual implementation of Photovoice activities conducted as part of a project that sought to gather youths' perspectives on neighborhood and housing conditions, community redevelopment, and health and well-being in Baltimore. We discuss the original in-person design and how activities were implemented virtually, in light of coronavirus disease 2019 (COVID-19) physical distancing guidelines. Challenges to virtual implementation included establishing rapport with youth and families during recruitment and data collection, encouraging active participation during discussion sessions, and varying technological skills among youth. Facilitators of virtual implementation included partnering with a community organization, piloting virtual sessions to assess participant's technology skills, and providing various ways for youth to participate during discussion sessions, engage in group activities, and receive hands-on instruction. This article showcases the ways in which virtual implementation of Photovoice activities can be successfully implemented with youth and provides recommendations for future Photovoice projects that include virtual activities.

Brief Report: Interruptions in HIV Prevention and Treatment During the COVID-19 Pandemic: A Cross-Sectional Study of Transgender and Gender Nonbinary Adults in the United States.

BACKGROUND: Transgender and gender nonbinary (TNB) people have been disproportionately affected by HIV and the COVID-19 pandemic. This study explored the prevalence of HIV prevention and treatment (HPT) interruptions during the pandemic and identified factors associated with these interruptions. SETTING: Data were drawn from LITE Connect, a US-based, nationwide, online, self-administered survey designed to examine the experiences of TNB adults during the COVID-19 pandemic. A convenience sample of 2134 participants were recruited between June 14, 2021, and May 1, 2022. METHODS: The analytic sample was restricted to participants taking antiretroviral medications to prevent or treat HIV before the onset of the pandemic (n = 153). We calculated descriptive statistics as well as Pearson χ 2 bivariate tests and multivariable models to identify factors associated with HPT interruptions during the pandemic. RESULTS: Thirty-nine percent of participants experienced an HPT interruption. We found a lower odds of HPT interruptions among participants living with HIV [adjusted odds ratios (aOR) 0.45; 95% Confidence Intervals (CI): 0.22, 0.92; P = 0.02] and essential workers [aOR 0.49; 95% CI: 0.23, 1.0; P = 0.06] and higher odds among people with chronic mental health conditions [aOR 2.6; 95% CI: 1.1, 6.2; P = 0.03]. When sex and education were included, we found a lower odds of interruptions among people with higher education. CI widened, but the magnitude and direction of effects did not change for the other variables. CONCLUSIONS: Focused strategies to address longstanding psychosocial and structural inequities are needed to mitigate HPT treatment interruptions in TNB people and prevent similar challenges during future pandemics.

Building health equity through housing policies: critical reflections and future directions for research.

Housing may be at once the most powerful and underused tool at our disposal to improve population health. Using examples from the USA, we argue that current levels of housing insecurity are the result of clear and inequitable policy choices, leading to the entrenchment of health inequities-particularly, across race and class. Solutions to housing insecurity must, therefore, be structural. The COVID-19 pandemic has opened a window of opportunity for these structural housing policy reforms. Through justice- and action-oriented research, health researchers can inform the development and implementation of housing policies that advance health equity. We offer a series of recommendations to better position our field to achieve this goal.

Variation in State-Level Eviction Moratorium Protections and Mental Health Among US Adults During the COVID-19 Pandemic.

Importance: Although evictions have been associated with adverse mental health outcomes, it remains unclear which stages of the eviction process are associated with mental distress among renters. Variation in COVID-19 pandemic eviction protections across US states enables identification of intervention targets within the eviction process to improve renters' mental health. Objective: To measure the association between the strength of eviction protections (ie, stages blocked by eviction moratoriums) and mental distress among renters during the COVID-19 pandemic. Design, Setting, and Participants: This cohort study used individual-level, nationally representative data from the Understanding Coronavirus in America Survey to measure associations between state eviction moratorium protections and mental distress. The sample of 2317 respondents included renters with annual household incomes less than $75 000 who reported a state of residence and completed surveys between March 10 and September 3, 2020, prior to the federal eviction moratorium order by the Centers for Disease Control and Prevention. Exposures: Time-varying strength of state moratorium protections as a categorical variable: none, weak (blocking court hearings, judgments, or enforcement without blocking notice or filing), or strong (blocking all stages of the eviction process beginning with notice and filing). Main Outcomes and Measures: Moderate to severe mental distress was measured using the 4-item Patient Health Questionnaire. Linear regression models were adjusted for time-varying state COVID-19 incidence and mortality, public health restrictions, and unemployment rates. Models included individual and time fixed effects as well as clustered standard errors. Results: The sample consisted of 2317 individuals (20 853 total observations) composed largely (1788 [78%] weighted) of middle-aged adults (25-64 years of age) and women (1538 [60%]); 640 respondents (23%) self-reported as Hispanic or Latinx, 314 respondents (20%) as non-Hispanic Black, and 1071 respondents (48%) as non-Hispanic White race and ethnicity. Relative to no state-level eviction moratorium protections, strong protections were associated with a 12.6% relative reduction (risk ratio, 0.87; 95% CI, 0.76-0.99) in the probability of mental distress, whereas weak protections were not associated with a statistically significant reduction (risk ratio, 0.96; 95% CI, 0.86-1.06). Conclusions and Relevance: This analysis of the Understanding Coronavirus in America Survey data found that strong eviction moratoriums were associated with protection against mental distress, suggesting that distress begins early in the eviction process with notice and filing. This finding is consistent with the idea that to reduce mental distress among renters, policy makers should focus on primary prevention of evictions.

Expiring Eviction Moratoriums and COVID-19 Incidence and Mortality.

The coronavirus disease 2019 (COVID-19) pandemic and associated economic crisis have placed millions of US households at risk of eviction. Evictions may accelerate COVID-19 transmission by decreasing individuals' ability to socially distance. We leveraged variation in the expiration of eviction moratoriums in US states to test for associations between evictions and COVID-19 incidence and mortality. The study included 44 US states that instituted eviction moratoriums, followed from March 13 to September 3, 2020. We modeled associations using a difference-in-difference approach with an event-study specification. Negative binomial regression models of cases and deaths included fixed effects for state and week and controlled for time-varying indicators of testing, stay-at-home orders, school closures, and mask mandates. COVID-19 incidence and mortality increased steadily in states after eviction moratoriums expired, and expiration was associated with a doubling of COVID-19 incidence (incidence rate ratio = 2.1; 95% confidence interval (CI): 1.1, 3.9) and a 5-fold increase in COVID-19 mortality (mortality rate ratio = 5.4; CI: 3.1, 9.3) 16 weeks after moratoriums lapsed. These results imply an estimated 433,700 excess cases (CI: 365,200, 502,200) and 10,700 excess deaths (CI: 8,900, 12,500) nationally by September 3, 2020. The expiration of eviction moratoriums was associated with increased COVID-19 incidence and mortality, supporting the public-health rationale for eviction prevention to limit COVID-19 cases and deaths.

Public Support for Policies to Increase Housing Stability During the COVID-19 Pandemic.

INTRODUCTION: The COVID-19 pandemic has exacerbated longstanding housing precarity. This study measures the public support for policies designed to increase housing stability and gauges whether support levels are associated with views about the role of evictions in COVID-19 transmission and the existence of racial inequities in the housing market. METHODS: A cross-sectional survey with a representative sample of U.S. adults in November 2020 assessed support for 4 housing policies. Logistic regression models estimated the adjusted levels of support for each policy, with separate models testing the association with whether or not a respondent recognized the role of evictions in increased COVID-19 transmission or acknowledged racial inequities in the housing market. RESULTS: Most U.S. adults supported policies aimed to increase housing stability during the COVID-19 pandemic, including extending moratoriums on evictions (63%) and foreclosures (67%) and increasing emergency rental assistance (63%). In total, 54% supported increased government spending on housing vouchers. Adults who agreed that averting eviction would slow COVID-19 transmission had higher support for housing stability policies, as did those who agreed that it was easier for White families to find affordable, high-quality housing than Black families. CONCLUSIONS: Support for housing stability policies was strong among U.S. adults, particularly among those who agreed that preventing evictions slowed COVID-19 transmission and among those who acknowledged racial inequities in the housing market. Raising public awareness of the connections among unstable housing, infectious disease transmission, and racial inequity could broaden the support for policies to keep people in their homes through the pandemic.

"There's no place like home": Examining the associations between state eviction defense protections and indicators of biopsychosocial stress among survivors of intimate partner violence.

Housing instability is prevalent among intimate partner violence (IPV) survivors and a source of biopsychosocial stress among this population. Eviction policies play an important role in determining housing instability of IPV survivors. However, few studies have investigated whether state-level policies that prevent evictions lessen vulnerability to biopsychosocial stress among IPV survivors. This study examined the relationship between state eviction defense policy and indicators of biopsychosocial stress among 6577 IPV survivors. State-level data on IPV-related housing policies were from a compendium on homelessness and violence. Individual-level data were collected from the National Intimate Partner and Sexual Violence Survey (NISVS), a nationally representative study of noninstitutionalized U.S. women and men from Wave 1 (2010). Multilevel regression models were conducted to investigate associations between the presence of an eviction defense policy and indicators of biopsychosocial stress (i.e., headaches, sleeping, safety concerns and PTSD symptoms). Stratified multilevel modeling was conducted to examine differences in the policy-stress associations across racial and ethnic groups and gender. Nearly 26% of states had an eviction defense policy for IPV survivors. Overall, residing in a state with an eviction defense policy (vs. none) was associated with no reports of frequent headaches (B [95% CI] = -0.21 [-0.41, -0.01], p < .05). For non-Hispanic Black survivors, residing in a state with an eviction defense policy (vs. none) was associated with reduced likelihood of reporting safety concerns (B [95% CI] = -1.36 [-2.16, -0.56], p < .001) and PTSD symptoms (B [SE] = -1.91 [-2.82, -1.01], p < .000). Among men survivors, residing in a state with an eviction defense policy was associated with reduced likelihood of reporting safety concerns (B [95% CI] = -0.63 [-1.26, -0.01], p < .05). State housing policies are important protective policies for IPV survivors. For IPV survivors, the eviction defense policy may interrupt the psychological sequeale of IPV and housing instability.

An application of agent-based modeling to explore the impact of decreasing incarceration rates and increasing drug treatment access on sero-discordant partnerships among people who inject drugs.

BACKGROUND: People who inject drugs (PWID) lag behind other key populations in HIV care continuum outcomes. The impacts of criminal justice reform and increasing drug treatment access on HIV have been underexplored. METHODS: We developed agent-based models (ABM) of sexual partnerships among PWID and non-PWID, and injection equipment-sharing partnerships among PWID in five US cities (Baltimore, Boston, Miami, New York City, San Francisco) over 3 years. The first set of ABM projected changes in partnership discordance among PWID as a function of decreasing ZIP code-level incarceration rates. The second set projected discordance as a function of increasing ZIP code-level drug treatment access. ABM were parameterized and validated overall, and by city and PWID race/ethnicity (Black, Latino, White) using National HIV Behavioral Surveillance data, administrative ZIP code-level data, surveillance reports and prior literature. Informed by research on prisoner release and community-level HIV prevalence, reductions in incarceration rates were fixed at 5% and 30% and respectively projected to increase ZIP code-level HIV prevalence by 2% and 12%. Increases in drug treatment access were fixed at 30% and 58%. RESULTS: In each city, a 30% reduction in ZIP code-level incarceration rates and 12% increase in ZIP code-level HIV prevalence significantly increased sero-discordance among at least one racial/ethnic group of PWID by 1-3 percentage points. A 5% reduction in incarceration rates, and 30% and 58% increases in drug treatment access, led to isolated significant changes in sero-discordance among Black and White PWID that were less than 1 percentage point. CONCLUSION: Reductions in incarceration rates may lead to short-term increases in sero-discordant partnerships among some PWID by increasing community-level HIV prevalence. Efforts to increase HIV testing, engagement in care and community reintegration post release, should be strengthened in the wake of incarceration reform. Additional research should confirm these findings and explore the lack of widespread impacts of drug treatment in this study.

"People Don't Just Start Shooting Heroin on Their 18th Birthday": A Qualitative Study of Community Stakeholders' Perspectives on Adolescent Opioid Use and Opportunities for Intervention in Baltimore, Maryland.

Initiation of non-medical prescription opioid use (NMPO) during early adolescence is tightly linked to heroin and other drug use disorders and related sequelae in later adolescence and young adulthood. Few studies explore stakeholders' perspectives on the burden and determinants of youth opioid use and barriers and facilitators to engaging youth in opioid use prevention and treatment services in urban settings with longstanding opioid epidemics. In-depth interviews were conducted with 22 stakeholders representing health and social service agencies in Baltimore, Maryland from May 2018- February 2019, to examine their perspectives on the burden and context of adolescent opioid use and identify barriers and facilitators to preventing and responding to adolescent opioid use. Transcripts were analyzed using the constant comparison method to identify themes. Most respondents described a recent uptick in opioid use independently, and in combination with other substances. As compared to heroin, NMPO was perceived to be more frequently used and less stigmatized among youth. Stakeholders perceived the process of transitioning from using NMPO to heroin as more common among White vs. Black youth and was perceived as occurring faster among White vs. Black youth. Some stakeholders believed racial differences in internal stigma against heroin use, and differential health service use among Black youth and White youth may have influenced these differences. Trauma and poverty were noted determinants of youth opioid use. Barriers to service provision included youth cognitive development, stigma and structural factors (e.g., disinvestment, lack of youth-centered and integrated services). Stakeholders perceive prevalent NMPO among Baltimore youth and identify multilevel barriers to delivering prevention, treatment and harm reduction services to this population. These findings encourage further investigation of determinants and consequences of opioid use among diverse racial/ethnic groups of youth in urban settings, and development of multilevel, youth-driven and youth-centered approaches to prevention and treatment.

Characterizing profiles of polysubstance use among high school students in Baltimore, Maryland: A latent class analysis.

BACKGROUND: Adolescent drug use has long term health consequences, like substance use disorders and psychiatric illnesses. Proximal health risks, especially for overdose, are amplified when multiple substances are combined. Existing literature on polysubstance use among adolescents has largely focused on alcohol, tobacco, and marijuana, but has largely excluded other drugs like opioids. Understanding how adolescents combine illicit drugs is essential for intervening to prevent poor health outcomes. METHODS: We aimed to explore patterns of lifetime polysubstance use among adolescents in Baltimore City. We used data on 9th-12th graders recruited to participate in the 2017 local Baltimore Youth Risk Behavior Survey who reported any lifetime drug use (n = 387; 60 % female, 77 % non-Hispanic Black). We then conducted a latent class analysis using 10 indicators of lifetime drug and alcohol use. After selecting the class model, we tested for associations between the class profiles and race, sex, school grade, and lifetime injection drug use. RESULTS: We identified three profiles of lifetime polysubstance use in our sample: alcohol and marijuana (68.6 % of sample), polysubstance (22.0 %), and alcohol/pain medication/inhalant use (9.4 %). Members of the polysubstance use class were more likely to be male and to report injection drug use. CONCLUSIONS: Understanding broader patterns of drug use beyond alcohol, tobacco and marijuana among adolescents is a crucial step towards preventing adverse drug and health-related outcomes later in life. More research is needed to characterize the full health impact of youth polysubstance use patterns and related risk behaviors like injection drug use.

Mortgage Discrimination and Racial/Ethnic Concentration Are Associated with Same-Race/Ethnicity Partnering among People Who Inject Drugs in 19 US Cities.

Racial/ethnic homophily in sexual partnerships (partners share the same race/ethnicity) has been associated with racial/ethnic disparities in HIV. Structural racism may partly determine racial/ethnic homophily in sexual partnerships. This study estimated associations of racial/ethnic concentration and mortgage discrimination against Black and Latino residents with racial/ethnic homophily in sexual partnerships among 7847 people who inject drugs (PWID) recruited from 19 US cities to participate in CDC's National HIV Behavioral Surveillance. Racial/ethnic concentration was defined by two measures that respectively compared ZIP code-level concentrations of Black residents to White residents and Latino residents to White residents, using the Index of Concentration at the Extremes. Mortgage discrimination was defined by two measures that respectively compared county-level mortgage loan denial among Black applicants to White applicants and mortgage loan denial among Latino applicants to White applicants, with similar characteristics (e.g., income, loan amount). Multilevel logistic regression models were used to estimate associations. Interactions of race/ethnicity with measures of racial/ethnic concentration and mortgage discrimination were added to the final multivariable model and decomposed into race/ethnicity-specific estimates. In the final multivariable model, among Black PWID, living in ZIP codes with higher concentrations of Black vs. White residents and counties with higher mortgage discrimination against Black residents was associated with higher odds of homophily. Living in counties with higher mortgage discrimination against Latino residents was associated with lower odds of homophily among Black PWID. Among Latino PWID, living in ZIP codes with higher concentrations of Latino vs. White residents and counties with higher mortgage discrimination against Latino residents was associated with higher odds of homophily. Living in counties with higher mortgage discrimination against Black residents was associated with lower odds of homophily among Latino PWID. Among White PWID, living in ZIP codes with higher concentrations of Black or Latino residents vs. White residents was associated with lower odds of homophily, but living in counties with higher mortgage discrimination against Black residents was associated with higher odds of homophily. Racial/ethnic segregation may partly drive same race/ethnicity sexual partnering among PWID. Future empirical evidence linking these associations directly or indirectly (via place-level mediators) to HIV/STI transmission will determine how eliminating discriminatory housing policies impact HIV/STI transmission.

Housing Instability, Depression, and HIV Viral Load Among Young Black Gay, Bisexual, and Other Men Who Have Sex With Men in Atlanta, Georgia.

Housing instability is common among sexual minority youth. Research suggests that psychological distress, such as depression, may mediate the association between housing instability and poor HIV-related outcomes, but this hypothesis remains underexplored. Housing instability was assessed using two variables (residential moves in 6 months, and self-reported homelessness at any time since age 15 years). We examined cross-sectional relationships between the housing instability variables and detectable HIV-1 viral load (VL) in a sample of young Black gay, bisexual, and other men who have sex with men (YB-GBMSM) living with HIV (N = 81) in Atlanta, GA, in 2015-2016. Additionally, we explored whether depressive symptoms mediated this relationship. Our exploratory study suggests that psychological distress may partially mediate the association between housing instability and detectable VL. In addition to structural interventions that ensure housing stability, increasing use of mental health services by unstably housed YB-GBMSM may improve VL suppression in this high-risk population.

Heroin and nonmedical prescription opioid use among high school students in urban school districts.

BACKGROUND: Research on adolescent heroin use has focused on national surveillance, access, prevalence of use, and overdose deaths, however, to our knowledge, no study has examined local-level differences in the prevalence of adolescent heroin use in the context of nonmedical prescription opioid (NMPO) use. This study characterizes heroin and NMPO use among US high school students in select urban areas by sex and race/ethnicity. METHODS: Data are from 21 urban school districts that participate in CDC's Local Youth Risk Behavior Surveillance System. We describe 2017 prevalence estimates (and 95 % confidence intervals) of lifetime heroin and NMPO use among youth stratified by sex and race/ethnicity (i.e., White, Black, Hispanic/Latino). RESULTS: The highest estimates of heroin use were in Baltimore, MD (7.6 %), Shelby County, TN (6.3 %), and Duval County, FL (6.1 %), whereas NMPO use was highest in Duval County, FL (18.1 %), Cleveland, OH (18.0 %), and Shelby County, TN (16.8 %). Heroin use was higher among boys than girls, especially among Hispanic/Latino boys in Duval County (12.3 %) and Black boys in Baltimore (10.9 %). NMPO use was highest among Hispanic/Latino girls (21.3 %) and White girls (19.9 %) in Duval County. DISCUSSION: While some cities and subpopulations with high levels of adolescent heroin use also had elevated levels of NMPO use, others did not, illustrating the complexities of this opioid epidemic.

Identifying Which Place Characteristics are Associated with the Odds of Recent HIV Testing in a Large Sample of People Who Inject Drugs in 19 US Metropolitan Areas.

This exploratory analysis investigates relationships of place characteristics to HIV testing among people who inject drugs (PWID). We used CDC's 2012 National HIV Behavioral Surveillance (NHBS) data among PWID from 19 US metropolitan statistical areas (MSAs); we restricted the analytic sample to PWID self-reporting being HIV negative (N = 7477). Administrative data were analyzed to describe the 1. Sociodemographic Composition; 2. Economic disadvantage; 3. Healthcare Service/Law enforcement; and 4. HIV burden of the ZIP codes, counties, and MSAs where PWID lived. Multilevel models tested associations of place characteristics with HIV testing. Fifty-eight percent of PWID reported past-year testing. MSA-level per capita correctional expenditures were positively associated with recent HIV testing among black PWID, but not white PWID. Higher MSA-level household income and imbalanced sex ratios (more women than men) in the MSA were associated with higher odds of testing. HIV screening for PWID is suboptimal (58%) and needs improvement. Identifying place characteristics associated with testing among PWID can strengthen service allocation and interventions in areas of need to increase access to HIV testing.

Police violence among people who inject drugs in Baltimore, Maryland.

BACKGROUND: Police violence is a deleterious public health and criminal justice issue that disproportionately affects people who inject drugs (PWID). Studies documenting the prevalence and correlates of physical police violence in this population are rare. The aim of this study was to examine the correlates of past year physical police violence among an urban sample of PWID. METHODS: PWID participating in the 2015 wave of the National HIV Behavioral Surveillance (NHBS) system in Baltimore City, Maryland, completed a socio-behavioral survey. Multivariable logistic regression was used to detect the socio-demographic, place-based, law-enforcement and health behavior correlates of exposure to police violence as well as knowledge of violence directed towards other PWID. RESULTS: Enrolled PWID (N = 570) were mostly male (72%), non-Hispanic Black (77%) and daily heroin injectors (86%). Seven percent had experienced past year physical police violence (Respondent-Driven Sampling [RDS] weighted estimate: 4%), and a quarter (24%) knew someone who had experienced physical police violence in the past year (RDS-weighted estimate: 17%). Male gender, homelessness, arrest, drug paraphernalia confiscation, and receptive syringe sharing were independently associated with police violence. Knowing someone who had experienced police violence was independently correlated with selling drugs, arrest, and attending a syringe services program. CONCLUSION: Population differences in the extent of police violence exposure indicate that experiences of police violence are not uniform among PWID. Violent encounters with police were associated with disruptions in harm reduction strategies that can prevent HIV and HCV transmission. This study adds to the small body of public health literature on police violence and highlights the importance of monitoring and addressing this critical issue.

Cross-sectional association between ZIP code-level gentrification and homelessness among a large community-based sample of people who inject drugs in 19 US cities.

BACKGROUND: Housing instability has been associated with poor health outcomes among people who inject drugs (PWID). This study investigates the associations of local-level housing and economic conditions with homelessness among a large sample of PWID, which is an underexplored topic to date. METHODS: PWID in this cross-sectional study were recruited from 19 large cities in the USA as part of National HIV Behavioral Surveillance. PWID provided self-reported information on demographics, behaviours and life events. Homelessness was defined as residing on the street, in a shelter, in a single room occupancy hotel, or in a car or temporarily residing with friends or relatives any time in the past year. Data on county-level rental housing unaffordability and demand for assisted housing units, and ZIP code-level gentrification (eg, index of percent increases in non-Hispanic white residents, household income, gross rent from 1990 to 2009) and economic deprivation were collected from the US Census Bureau and Department of Housing and Urban Development. Multilevel models evaluated the associations of local economic and housing characteristics with homelessness. RESULTS: Sixty percent (5394/8992) of the participants reported homelessness in the past year. The multivariable model demonstrated that PWID living in ZIP codes with higher levels of gentrification had higher odds of homelessness in the past year (gentrification: adjusted OR=1.11, 95% CI=1.04 to 1.17). CONCLUSIONS: Additional research is needed to determine the mechanisms through which gentrification increases homelessness among PWID to develop appropriate community-level interventions.

Social causation and neighborhood selection underlie associations of neighborhood factors with illicit drug-using social networks and illicit drug use among adults relocated from public housing.

Theories of social causation and social influence, which posit that neighborhood and social network characteristics are distal causes of substance use, are frequently used to interpret associations among neighborhood characteristics, social network characteristics and substance use. These associations are also hypothesized to result from selection processes, in which substance use determines where people live and who they interact with. The potential for these competing selection mechanisms to co-occur has been underexplored among adults. This study utilizes path analysis to determine the paths that relate census tract characteristics (e.g., economic deprivation), social network characteristics (i.e., having ≥ 1 illicit drug-using network member) and illicit drug use, among 172 African American adults relocated from public housing in Atlanta, Georgia and followed from 2009 to 2014 (7 waves). Individual and network-level characteristics were captured using surveys. Census tract characteristics were created using administrative data. Waves 1 (pre-relocation), 2 (1st wave post-relocation), and 7 were analyzed. When controlling for individual-level sociodemographic factors, residing in census tracts with prior economic disadvantage was significantly associated with illicit drug use at wave 1; illicit drug use at wave 1 was significantly associated with living in economically-disadvantaged census tracts at wave 2; and violent crime at wave 2 was associated with illicit drug-using social network members at wave 7. Findings from this study support theories that describe social causation and neighborhood selection processes as explaining relationships of neighborhood characteristics with illicit drug use and illicit drug-using social networks. Policies that improve local economic and social conditions of neighborhoods may discourage substance use. Future studies should further identify the barriers that prevent substance users from obtaining housing in less disadvantaged neighborhoods.