In the United States, the frequent amalgamation of homelessness, drug use, and exchange of sex for money, shelter, food, or drugs increases the risk of serious health conditions, including trauma and HIV. 1 Women who are unhoused have an all-cause mortality 5 to 8 times higher than housed women. 2 Seattle, Washington, is facing a housing crisis, with a 31% increase in homelessness from 2008 to 2018 3 and a growing epidemic of opioid and methamphetamine use. In 2018, these overlapping epidemics created the context for an HIV outbreak in Seattle among unhoused heterosexual people. 4 Several US cities have created mobile health clinics in an effort to engage unhoused people in medical care. 5 In July 2018, the Safe, Healthy, Empowered (SHE) Clinic was founded to provide care for unhoused women colocated at Aurora Commons, a drop-in community center with a longstanding relationship with unhoused people in Seattle. Patients at the SHE Clinic reflect the unhoused population's high rates of injection drug use, exchange sex, unplanned pregnancy, and sexually transmitted infections. 6 In this cohort study, we evaluated the association between use of the SHE Clinic and the frequency of nonemergent emergency department (ED) visits among women living unhoused who exchange sex and inject drugs.
MethodsSurvey data collected from an observational cohort of 76 women 18 years or older at Aurora Commons included self-identified demographic characteristics, fertility desires, and HIV risk factors.Participants provided oral and written consent for surveys and abstraction of electronic medical record data. REDCap (Research Electronic Data Capture software (Vanderbilt University) was used for survey collection and consenting participants. This study received ethical approval from the University of Washington Institutional Review Board. The study followed the Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) reporting guideline.The SHE Clinic operates 4 hours a week and provides walk-in care. Participants with at least 1 visit to the SHE Clinic before February 2, 2019, were compared with participants with no visits. A manual review of participants' electronic medical records from February 1, 2018, through August 1, 2019, was conducted to find the dates and chief concerns for ED visits in the Seattle area (10 facilities, 91% of the area EDs). Two clinician investigators (J.S. and M.L.G.) classified each ED visit as emergent or nonemergent. Emergency department visits for sexual assault, trauma, drug overdose, mental health crisis, or illness resulting in hospitalization were classified as emergent visits. Descriptive data analyses were performed with Stata version 15.0 software (StataCorp). Emergency department visit rates were calculated per woman per month, and paired Wilcoxon signed rank tests were used to compare the frequency of ED visits in the 6 months before and after a woman's first SHE Clinic visit or a midperiod reference date for nonadopters.
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