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Nguyen TQ, Roberts Lavigne LC, Brantner CL, Kirk GD, Mehta SH, Linton SL. Estimation of place-based vulnerability scores for HIV viral non-suppression: an application leveraging data from a cohort of people with histories of using drugs. BMC Med Res Methodol 2024; 24:21. [PMID: 38273277 PMCID: PMC10809603 DOI: 10.1186/s12874-023-02133-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 12/20/2023] [Indexed: 01/27/2024] Open
Abstract
The relationships between place (e.g., neighborhood) and HIV are commonly investigated. As measurements of place are multivariate, most studies apply some dimension reduction, resulting in one variable (or a small number of variables), which is then used to characterize place. Typical dimension reduction methods seek to capture the most variance of the raw items, resulting in a type of summary variable we call "disadvantage score". We propose to add a different type of summary variable, the "vulnerability score," to the toolbox of the researchers doing place and HIV research. The vulnerability score measures how place, as known through the raw measurements, is predictive of an outcome. It captures variation in place characteristics that matters most for the particular outcome. We demonstrate the estimation and utility of place-based vulnerability scores for HIV viral non-suppression, using data with complicated clustering from a cohort of people with histories of injecting drugs.
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Affiliation(s)
- Trang Quynh Nguyen
- Department of Mental Health, Johns Hopkins Bloomberg School of Public Health (JHSPH), Baltimore, MD, USA.
| | | | | | | | | | - Sabriya L Linton
- Department of Mental Health, Johns Hopkins Bloomberg School of Public Health (JHSPH), Baltimore, MD, USA
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Dsouza N, McGhee-Hassrick E, Giordano K, Friedman C, Yamasaki Y, Perez C, Martinez O, Carroll-Scott A, Martinez-Donate AP. Analysis of Network Characteristics to Assess Community Capacity of Latino-Serving Organizations in Philadelphia. J Urban Health 2021; 98:654-664. [PMID: 33721172 PMCID: PMC7958939 DOI: 10.1007/s11524-021-00535-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/22/2021] [Indexed: 11/30/2022]
Abstract
Latino immigrants are disproportionately impacted by substance use, HIV/AIDS, domestic violence, and mental health (SAVAME). The burden of these syndemic conditions is influenced by limited access to health and social services to prevent and treat these conditions. The syndemic nature of these factors necessitates an integrated, coordinated approach to address them simultaneously. We analyzed characteristics of Latino-serving organizations in Philadelphia, PA, that provide SAVAME-related health and/or social services, and their interorganizational collaborations to meet the needs of Philadelphia's Latino communities. We surveyed Latino-serving organizations (N=43) identified through existing resource directories and key informants. Network analyses identified patterns and density of collaborative ties (i.e., referrals, administrative, or planning/advocacy) across organizations and characterized these ties by type of service. Density (expressed as percent of all possible ties) revealed a higher referral rate (40%) than administrative (29%) or planning (26%) coordination. Network sociograms display clusters of providers by geography. Examination of bonding (within-group) ties revealed comparable perceptions of high value among both South/Center Philadelphia (57%) and in North Philadelphia providers (56%), but bridging (between-group) ties suggest lower levels of high-value perceptions (24%). No evident clustering by type of service based on syndemic factor was observed. Density of bridging across types of providers was highest for referrals (38%) followed by planning (23%) and administrative coordination (20%). Interventions to promote collaboration between providers should focus on facilitating administrative and planning collaborations that leverage existing capacity of the network. Given the syndemic nature of these conditions, greater collaboration between providers of complementing SAVAME services is imperative.
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Affiliation(s)
- Nishita Dsouza
- Drexel University, Nesbitt Hall Room 458, 3215 Market St NW, Philadelphia, PA, 19104, USA
| | | | | | - Chris Friedman
- Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | | | | | | | - Amy Carroll-Scott
- Drexel University, Nesbitt Hall Room 458, 3215 Market St NW, Philadelphia, PA, 19104, USA
| | - Ana P Martinez-Donate
- Drexel University, Nesbitt Hall Room 458, 3215 Market St NW, Philadelphia, PA, 19104, USA.
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Abstract
We proposed a multilevel model of structural influences on HIV-risky sexual partnerships in a diverse sample of 1793 youth residing in 23 states and the District of Columbia. We examined the influence of concentrated disadvantage, HIV stigma, and sexual and gender minority stigma on engagement in HIV risky sexual partnerships and whether youth's participation in opportunity structures, anticipation of HIV stigma, and perceptions of their community as youth-supportive settings mediated structural effects. After controlling for age, HIV status, and race, we found structural HIV stigma had deleterious indirect effects on youth's participation in HIV-risky sexual partnerships. Concentrated disadvantage and structural sexual and gender minority stigma had direct negative effects on youth's perceptions of their communities as supportive and on their participation in prosocial activity. Support perceptions had direct, protective effects on avoidance of HIV-risky sexual partnerships. Structural stigma undermines youth's belief that their communities invest in their safety and well-being.
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Brawner BM, Reason JL, Hanlon K, Guthrie B, Schensul JJ. Stakeholder conceptualisation of multi-level HIV and AIDS determinants in a Black epicentre. CULTURE, HEALTH & SEXUALITY 2017; 19:948-963. [PMID: 28132611 PMCID: PMC6100790 DOI: 10.1080/13691058.2016.1274428] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 12/15/2016] [Indexed: 06/06/2023]
Abstract
HIV has reached epidemic proportions among African Americans in the USA but certain urban contexts appear to experience a disproportionate disease burden. Geographic information systems mapping in Philadelphia indicates increased HIV incidence and prevalence in predominantly Black census tracts, with major differences across adjacent communities. What factors shape these geographic HIV disparities among Black Philadelphians? This descriptive study was designed to refine and validate a conceptual model developed to better understand multi-level determinants of HIV-related risk among Black Philadelphians. We used an expanded ecological approach to elicit reflective perceptions from administrators, direct service providers and community members about individual, social and structural factors that interact to protect against or increase the risk for acquiring HIV within their community. Gender equity, social capital and positive cultural mores (e.g., monogamy, abstinence) were seen as the main protective factors. Historical negative contributory influences of racial residential segregation, poverty and incarceration were among the most salient risk factors. This study was a critical next step toward initiating theory-based, multi-level community-based HIV prevention initiatives.
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Affiliation(s)
- Bridgette M. Brawner
- Department of Family and Community Health, University of Pennsylvania School of Nursing, Philadelphia, Pennsylvania, USA
| | - Janaiya L. Reason
- Department of Family and Community Health, University of Pennsylvania School of Nursing, Philadelphia, Pennsylvania, USA
| | - Kelsey Hanlon
- Department of Family and Community Health, University of Pennsylvania School of Nursing, Philadelphia, Pennsylvania, USA
| | - Barbara Guthrie
- Department of Nursing, Northeastern University, Boston, Massachusetts, USA
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Disparities in the Clinical Evolution of Anal Neoplasia in an HIV-Infected Cohort. J Racial Ethn Health Disparities 2017; 5:209-212. [PMID: 28332090 DOI: 10.1007/s40615-017-0358-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 03/02/2017] [Accepted: 03/06/2017] [Indexed: 10/19/2022]
Abstract
BACKGROUND A recent meta-analysis suggested that anal intraepithelial neoplasia and invasive anal cancer are more prevalent among black men having sex with men (MSM). METHODS We conducted a retrospective cohort of HIV-infected adult patients under care between 2001 and 2012. Disparities in clinical evolution of anal intraepithelial neoplasia to high-grade squamous intraepithelial lesion (HSIL) and invasive anal cancer were evaluated in a three-state Markov model adjusted for cytology misclassification. We studied sociodemographic covariate effects for each state transition using multivariable models controlling for antiretroviral therapy and infrared coagulation treatment of HSIL. RESULTS Among 2804 patients with a median age of 40 years, 78% were MSM and 38% non-white. There were no disparities in HSIL prevalence (14%) by age, sex, race, or risk group. After 4.0 years of follow-up, 23 patients developed invasive anal cancer. Females and black patients had lower transition rates from <HSIL→HSIL (HR = 0.35 and HR = 0.55, respectively); those with age >40 had lower rates of both <HSIL→HSIL progression (HR = 0.64) and HSIL→<HSIL regression (HR = 0.56); and MSM had higher rates of progression from <HSIL→HSIL (HR = 3.30). Controlling for antiretroviral therapy and infrared coagulation (IRC) treatment as time-updated covariates, the univariable effects of sex, black race, and HIV risk factor remained significant. CONCLUSIONS Black race was not associated with prevalent anal intraepithelial neoplasia nor with post-baseline progression of anal intraepithelial neoplasia.
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de Vries SG, Cremers AL, Heuvelings CC, Greve PF, Visser BJ, Bélard S, Janssen S, Spijker R, Shaw B, Hill RA, Zumla A, van der Werf MJ, Sandgren A, Grobusch MP. Barriers and facilitators to the uptake of tuberculosis diagnostic and treatment services by hard-to-reach populations in countries of low and medium tuberculosis incidence: a systematic review of qualitative literature. THE LANCET. INFECTIOUS DISEASES 2017; 17:e128-e143. [PMID: 28291721 DOI: 10.1016/s1473-3099(16)30531-x] [Citation(s) in RCA: 101] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 10/11/2016] [Accepted: 11/03/2016] [Indexed: 01/25/2023]
Abstract
Tuberculosis disproportionately affects hard-to-reach populations, such as homeless people, migrants, refugees, prisoners, or drug users. These people often face challenges in accessing quality health care. We did a systematic review of the qualitative literature to identify barriers and facilitators to the uptake of tuberculosis diagnostic and treatment services by people from hard-to-reach populations in all European Union (EU), European Economic Area, EU candidate, and Organisation for Economic Co-operation and Development countries. The 12 studies included in this review mainly focused on migrants. Views on perceived susceptibility to and severity of tuberculosis varied widely and included many misconceptions. Stigma and challenges regarding access to health care were identified as barriers to tuberculosis diagnosis and treatment uptake, whereas support from nurses, family, and friends was a facilitator for treatment adherence. Further studies are required to identify barriers and facilitators to the improved identification and management of tuberculosis in hard-to-reach populations to inform recommendations for more effective tuberculosis control programmes.
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Affiliation(s)
- Sophia G de Vries
- Center of Tropical Medicine and Travel Medicine, Department of Infectious Diseases, Division of Internal Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
| | - Anne L Cremers
- Center of Tropical Medicine and Travel Medicine, Department of Infectious Diseases, Division of Internal Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
| | - Charlotte C Heuvelings
- Center of Tropical Medicine and Travel Medicine, Department of Infectious Diseases, Division of Internal Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
| | - Patrick F Greve
- Center of Tropical Medicine and Travel Medicine, Department of Infectious Diseases, Division of Internal Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
| | - Benjamin J Visser
- Center of Tropical Medicine and Travel Medicine, Department of Infectious Diseases, Division of Internal Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
| | - Sabine Bélard
- Center of Tropical Medicine and Travel Medicine, Department of Infectious Diseases, Division of Internal Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
| | - Saskia Janssen
- Center of Tropical Medicine and Travel Medicine, Department of Infectious Diseases, Division of Internal Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
| | - René Spijker
- Medical Library, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands; Cochrane Netherlands, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, Netherlands
| | - Beth Shaw
- National Institute for Health and Care Excellence, Piccadilly Plaza, Manchester, UK
| | - Ruaraidh A Hill
- National Institute for Health and Care Excellence, Piccadilly Plaza, Manchester, UK; Health Services Research, University of Liverpool, Liverpool, UK
| | - Alimuddin Zumla
- Division of Infection and Immunity, University College London, London, UK; National Institute for Health Research University College London Hospitals Biomedical Research Centre, London, UK
| | | | - Andreas Sandgren
- European Centre for Disease Prevention and Control, Solna, Sweden
| | - Martin P Grobusch
- Center of Tropical Medicine and Travel Medicine, Department of Infectious Diseases, Division of Internal Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
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