Our Research

In this commentary of the study "Housing Status, Cancer Care, and Associated Outcomes Among US Veterans", Maria C. Raven, MD, MPH, associate Professor and Chief of Emergency Medicine at UCSF, provides lessons from the Veterans Health Administration. In 2009, the VHA began a multipronged initiative designed to end and prevent homelessness among veterans, which led to a 45% reduction in veteran homelessness from 2009 to 2017. Dr. Raven writes, "The results of this study indicate that in addition to providing housing at comparatively high rates for unhoused veterans, the system’s initiative to prevent and end veteran homelessness has also likely helped reduce important disparities in oncologic care for this population."

Cancer is the leading cause of mortality for people experiencing homelessness (PEH). However, not much is known about cancer-related surgical outcomes among PEH. This retrospective cohort study aimed to characterize access to care among PEH, evaluate postoperative outcomes, and assess costs associated with surgery for malignancy among PEH. Researchers found that PEH were less likely to undergo surgery for malignancy at cancer centers than hose who are housed. People experiencing homelessness also had a higher risk of requiring unplanned surgery.

Mobile crisis services for people experiencing distress related to mental health or substance use are expanding in the US. In this mixed method study protocol, researchers plan to conduct an interrupted time series analysis to quantitatively examine the impacts of the Street Crisis Response Team (SCRT) on people experiencing homelessness who utilize the services in San Francisco. Researchers also plan to analyze racial and ethnic disparities to understand the impact on health equity.

Unhoused patients have worse outcomes and higher health care utilization compared to their housed counterparts. Previous research has primarily focused on physical and behavioral health. This retrospective cohort study investigated the association between housing status and the nature of surgical care provided, health care utilization, and operational outcomes. Researchers found that unhoused patients commonly underwent emergent operations and had more complex hospitalizations.

This paper describes the qualitative component of a large mixed method study, the California Statewide Study of People Experiencing Homelessness. The qualitative study consisted of seven sub-studies across eight counties, each exploring different dimensions of homelessness. BHHI researchers recruited participants from the overall sample, a statewide representative sample of adults experiencing homelessness recruited in eight counties, based on their responses to questions from the survey interviews. The researchers' mereological study design presents an approach for developing complex qualitative policy studies across a range of topic areas.

Sleep is essential to health and affected by environmental and clinical factors. There is limited longitudinal research examining sleep quality in homeless older adults. This exploratory study examined the factors associated with poor sleep quality in a cohort of older adults in Oakland, California. Researchers found that participants had higher prevalence of poor sleep and worse Pittsburgh Sleep Quality Index (PSQI) scores than in studies of housed adults 20 years older.

Drug overdose has increased in the U.S. since the COVID-19 pandemic began in 2020. In San Francisco, single-room occupancy (SRO) tenants are more likely to dive of opioid overdose than non-SRO residents. The SRO project aimed to reduce fatal overdoses in SROs. In this eight month ethnographic field work, researchers found that the SRO project increased awareness, access to, and understanding of naloxone, as well as, supporting the privacy and autonomy of tenants regarding their drug use.

Older adults experiencing chronic homelessness have low rates of advance care planning despite high rates of morbidity and mortality. Researchers explored if rehousing people who experience homelessness into permanent supportive housing (PSH) would present an opportunity to introduce advance care planning (ACP). Researchers identified behavioral determinants related to ACP for formerly chronically homeless adults in PSH.

Programs have been created to address housing for Veterans. However, Veterans are still at high risk for unstable housing. This study aimed to determine whether interpersonal violence was associated with unstable housing among Veterans. Research from BHHI demonstrated the potential to improve health outcomes through trauma informed approaches that address mental health, substance use, and housing concurrently.

 Traumatic injury is a major cause of morbidity for people experiencing homelessness (PEH), however, injury patterns and subsequent hospitalization among PEH have not been studied on a national scale. In this national retrospective observational cohort study, researchers evaluated whether differences in mechanisms of injury exist between PEH and housed trauma patients in North America and whether the lack of housing is associated with increased adjusted odds of hospital admission. Researchers found that injured PEH had a significantly adjusted greater odds of hospital admissions.

In many parts of the world, communities experience water, sanitation, and hygiene (WaSH) insecurity. While WaSH insecurity is prevalent in many low and middle-income countries, it is also a problem in high-income countries, like the United States, as is evident in vulnerable populations, including people experiencing homelessness. This study examined WaSH access among unhoused communities in Los Angeles, California. Researches found that WaSH services for unhoused communities in LA is most difficult at night, however community differences exist.

People who use drugs (PWUD) commonly experience housing instability due to intersecting structural vulnerabilities. Researchers conducted a qualitative study in Vancouver, Canada's downtown eastside, interviewing PWUD who were recently evicted fron the downtown eastside. Narratives from the interviewees provided context on how the demands of the institutional circuit deepened vulnerablitities and prolonged experiences in homelessness. Researchers suggested that interventions that address survival needs and preserve agency will be necessary to mitigate risks within the institutional circuit.