Meta-Analyses of Sexual Assault Prevalence Among Homeless Women

BackgroundLiterature on sexual assault prevalence among homeless women is limited, with few studies disaggregating risk by geography, resource access, mental health, LGBTQ status, or disability. ObjectiveThis study provides two distinct meta-analyses to ascertain the aggregated overall prevalence (k=20 studies) and the aggregated 12-month prevalence (k=14 studies) of sexual assault among homeless women. By examining each recall period independently, we elucidate cumulative burden throughout the life cycle and annual risk, offering unique insights for public health interventions. By synthesizing global data, we aimed to clarify risks for women with disabilities, mental illness, or Lesbian, Gay, Bisexual, Transgender, Queer or Questioning, Plus (LGBTQ+) identities to inform crisis care interventions. MethodsFollowing PRISMA 2020 guidelines, six databases were searched for studies published after 2010 reporting sexual assault prevalence in homeless women. Twenty studies met the inclusion criteria. Random-effects meta-analyses were performed using a logit transformation. Heterogeneity was assessed with I{superscript 2} and Cochrans Q; publication bias with funnel plots and Eggers test. ResultsThe pooled lifetime prevalence of sexual assault was 39.2 % (95 % CI 25-56 %), and 12-month prevalence was 22 % (95 % CI 16-30 %). Heterogeneity was extreme (I{superscript 2} = 97 %). Subgroup analyses showed the highest prevalence among women with disabilities (92 %, single study), followed by LGBTQ+ (33 %) and women with mental illness (34 %). HIV-positive women had the lowest prevalence (2.6 %). Eggers test indicated no publication bias (p = 0.64). ConclusionHomeless women face disproportionately high rates of sexual assault, far exceeding the general female population, with particularly elevated estimates among women with disabilities, LGBTQ+ women, and those with mental illness. These preliminary findings highlight the need for improved screening practices and tailored public health interventions to address sexual assault in doubly vulnerable populations. Standardizing definitions of sexual assault and investigating risk factors could lead to more tailored public health interventions. HighlightsO_LIMarked Epidemiologic Burden: Nearly 40% of homeless women report lifetime sexual assault. C_LIO_LIPersistent risk: One in five homeless women assaulted within the past 12 months. C_LIO_LIMarginalized Impact: Rates highest among disabled, LGBTQ+, and HIV+ women. C_LIO_LIHigh Variability: Extreme heterogeneity (I{superscript 2} {approx} 97%) shows research inconsistency. C_LIO_LIResearch Priority: Standardize methods and definitions to improve accuracy. C_LI