LAUSR

Sleep quality is understudied among street-based female sex workers (FSW), a population characterized by high rates of structural vulnerability. FSW may be at higher risk for poor sleep due to food and housing insecurity, violence, substance use and irregular work hours. We studied correlates of restless sleep in an urban, street-based risk environment. Data are from a year-long observational prospective cohort study of street-based FSW (n=250) in Baltimore, MD. Baseline survey data, collected April 2016 to February 2017, included topics such as structural vulnerability, mental and physical health, substance use and lifetime violence. Sleep was measured with item 7 on the CES-D-10 Scale; respondents indicated how many days in the past week their sleep was restless (< 1 day, 1-2 days, 3-4 days, 5-7 days). We conducted bivariate and multivariable logistic analysis to identify correlates of experiencing 5-7 days of restless sleep vs. fewer. Median age was 35 years. Most (66%) were Non-Hispanic White, 62% were homeless, 61% reported food insecurity, and 65% injected heroin. We documented a high prevalence of trauma; 81% reported lifetime sexual or physical violence by family members, intimate partners, paying clients, or police officers, and 62% screened positive for PTSD on the PCL-5 Checklist. 54% reported 5-7 days of restless sleep in the past week. Independent associations with frequent restless sleep included older age (age 35+ aOR: 2.67 [1.64-4.36]), food insecurity (aOR: 2.02 [1.42-2.88]), self-reported poor health (aOR: 3.98 [1.99-7.96]), and lifetime violence: a greater number of violent experiences corresponded with higher odds of restless sleep (1-2 vs. 0 experiences aOR: 2.38 [1.43-3.99], 3-4 vs. 0 experiences aOR: 3.67 [2.22-6.05]). These data demonstrate high prevalence of restless sleep among street-based FSW with higher risk among those who experience intersecting vulnerabilities and multiple exposures to violence. Trauma-informed structural interventions may improve sleep quality among this population. This work was supported by the National Institute of Drug Research (R01DA038499-01).