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Over 70% of adults experiencing homelessness are cigarette smokers, a fivefold greater rate than in the general U.S. population. Consequently, tobacco-related conditions are the leading causes of disease and death for this group. Adults experiencing homelessness tend to seek shelter in urban areas. Thus, they not only experience the daily stressors of being homeless, but they may additionally experience unique or additive urban stressors (e.g., stress related to using public services, crime and violence, and/or cultural conflicts with others). For some smokers, stress is known to increase smoking rates and decrease readiness to quit smoking. Likewise, increased smoking rates alone may lead to a lower likelihood of making a quit attempt. The current study examined the potential mediating role of smoking level in the association of urban stress and quit readiness among adults experiencing homelessness (N = 411). Two multinomial logistic regression analyses revealed that urban stress was positively associated with smoking level (p = 0.02). The odds ratio for one-unit increase in stress was 1.047 (CI.95:1.014, 1.082) for being a heavy vs. non-daily smoker. Furthermore, analyses revealed smoking level mediated the effect of stress on quit readiness (ab = -0.005, CI.95:-0.010, -0.002]). Homeless smokers who report high levels of stress might smoke at higher levels, which could attenuate quit readiness.

The purpose of this manuscript is to determine the prevalence of opioid misuse/opioid use disorder (OUD) among adults experiencing homelessness and describe characteristics that account for significant variance in relation to opioid misuse in those who misuse and do not misuse opioids. From six homeless shelters in Oklahoma City, adults participated in a survey about their demographics, substance use, mental health, and physical health from July to August of 2016 (n = 569). For assessing substance use, participants responded about their opioid misuse and diagnosis of OUD, current smoking status, arrests due to drug possession or driving while intoxicated, and diagnosis with alcohol use disorder or another drug use disorder, excluding opiate use disorder. A cumulative score of mental health comorbidity was created based on affirmative responses for having been diagnosed with depression, post-traumatic stress disorder (PTSD), schizophrenia/schizoaffective disorder, bipolar disorder, or an anxiety disorder besides PTSD. For physical health, one item from the General Health Survey-Short Form assessed pain, one item from the Behavioral Risk Factor Surveillance Survey assessed health, and one item assessed history of concussion. Bivariate analyses and logistic regression models identified the association. Sixteen percent of participants reported having experienced opioid misuse/been diagnosed with OUD. Substance use behaviors and physical health accounted for significant variance among those who misuse compared to those that do not misuse opioids. The most robust positive association of opioid misuse included: being white, being a current smoker, being diagnosed with another drug disorder, and having a concussion history. Additional research among the homeless population with a focus on concussion history as it relates to substance use and mental health comorbidity is needed.

Exposure to violence may explain sleep inadequacies reported by homeless adults, with women being potentially more susceptible to violence and sleep disturbances than men. This study examined the association between violence and sleep inadequacies among homeless adults and explored differences by sex. Adult participants were recruited from a shelter (n= 194; 71.1% men, Mage= 43.8+12.2). Participants self-reported victimization and/or witnessing violence (mugging, fight, and/or sexual assault) at the shelter, sleep duration (over an average 24 hours), insufficient sleep (days without sufficient rest/sleep), and unintentional daytime sleep (days with unintentional sleep) in the past month. Linear regressions were used to estimate associations between violence and sleep inadequacies, controlling for sex, age, race, months homeless, and depression. Moderation by sex was examined via an interaction term following mean-centering of variables. Overall, 20.6% of participants (n = 40) reported victimization since moving to the shelter. In the last month, participants reported witnessing an average of 2.9+5.1 acts of violence. Over the same timeframe, participants reported 6.9+2.0 hours of sleep nightly, 11.2+10.7 days of insufficient sleep, and 6.2+8.8 days with unintentional daytime sleep. In adjusted analyses, witnessing violence was associated with insufficient sleep (p= .001). Men and women differed only in age and race in unadjusted analyses; sex was not a significant moderator of any association between violence and sleep in adjusted analyses. Links between witnessing violence and sleep inadequacies should be considered in shelter health promotion efforts. Successful efforts to minimize violence may reduce insufficient sleep amongst both sexes.

Poor health literacy reduces the efficacy of behavior change interventions, hampers management of health conditions, and attenuates understanding of the prevention and treatment of diseases. Poor health literacy has also been linked to fair/poor self-rated health in domiciled samples; however, there is a paucity of studies on the relation amongst homeless adults, who bear a disproportionate burden of disease and disability and require a high level of care and access to health services. Here, we examined the association between health literacy and self-rated health among a convenience sample of homeless adults. Participants were recruited from six homeless-serving agencies in Oklahoma City (N = 575; 63% men, Mage = 43.6+12.3). We used logistic regression to assess the association between health literacy (confidence completing medical forms: extremely/quite a bit versus somewhat/little bit/not at all) and self-rated health (poor/fair versus good/very good/excellent), controlling for age, subjective social status, education, race, sex, income, health insurance, employment, social security recipient status, diabetes diagnosis, high blood pressure diagnosis, and high cholesterol diagnosis. In the adjusted model, health literate homeless individuals had greater odds of endorsing good/very good/excellent self-rated health compared to those somewhat/a little bit/not at all confident completing medical forms (AOR = 2.02, [CI95% = 1.35-3.02]). Interventions targeted at adjusting reading level and comprehensibility of health information are needed for homeless individuals with poor/limited health literacy, which may ultimately impact their self-rated health. Shelters and homeless-serving agencies could host classes focused on practical skills for enhancing health literacy and/or provide navigation services.

There is a dearth of research on the determinants of food insecurity among adults who experience homelessness. According to cumulative risk theory, it is the accumulation of risk factors that places individuals in jeopardy for negative health consequences. Building on the cumulative risk theory, domain specific indices were created to examine the relationship between four cumulative risk factors and food insecurity among adults who experience homelessness. Adult participants were recruited from six area shelters in Oklahoma City (N = 565) during July – August of 2016. Participants who affirmatively responded to two to six items of the six-item USDA Food Security Scale-Short form were categorized as food insecure. Four indices of cumulative risk were created based on affirmative survey responses: poor health & risky health behaviors index, personal and sexual victimization index, household disruption, and financial strain. Covariate-adjusted logistic regression models predicted the odds of adults experiencing food insecurity. Seventy-eight percent of the sample experienced food insecurity. Higher scores for the poor health and risky health behaviors index predicted higher odds of experiencing food insecurity (OR = 1.80, CI: 1.51 – 2.14). Higher scores for the personal and sexual victimization index also predicted higher odds of experiencing food insecurity (OR = 1.57, CI: 1.20 – 2.04). To facilitate food security among adults experiencing homelessness, shelters and community-based programs need to consider homelessness and food insecurity to be multi-faceted public health problems that are interrelated.