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Khalifa A, Kim B, Regan S, Moline T, Chaix B, Chen YT, Schneider J, Duncan DT. Examination of multidimensional geographic mobility and sexual behaviour among Black cisgender sexually minoritized men in Chicago. GEOSPATIAL HEALTH 2024; 19:10.4081/gh.2024.1273. [PMID: 38752862 PMCID: PMC11194757 DOI: 10.4081/gh.2024.1273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 04/13/2024] [Indexed: 06/06/2024]
Abstract
Black sexually minoritized men (BSMM) are the most likely to acquire HIV in Chicago- a racially segregated city where their daily travel may confer different HIV-related risks. From survey and GPS data among participants of the Neighbourhoods and Networks Cohort Study, we examined spatial (proportion of total activity space away from home), temporal (proportion of total GPS points away from home), and motivation-specific (discordance between residential and frequented sex or socializing neighbourhoods) dimensions of mobility. To identify potential drivers of BSMM's risk, we then examined associations between mobility and sexual behaviours known to cause HIV transmission: condomless anal sex, condomless anal sex with a casual partner, transactional sex, group sex, and sex-drug use. Multivariable logistic regression models assessed associations. Of 269 cisgender BSMM, most were 20-29 years old, identified as gay, and lowincome. On average, 96.9% (Standard Deviation: 3.7%) of participants' activity space and 53.9% (Standard Deviation: 38.1%) of participants' GPS points occurred outside their 800m home network buffer. After covariate adjustment, those who reported sex away from home were twice as likely to report condomless sex (Odds Ratio: 2.02, [95% Confidence Interval (CI): 1.08, 3.78]). Those who reported socializing away from home were four times more likely to have condomless sex with a casual partner (Odds Ratio: 4.16 [CI: 0.99, 29.0]). BSMM are on the move in Chicago, but only motivation-specific mobility may increase HIV transmission risk. Multidimensional investigations of mobility can inform place-based strategies for HIV service delivery.
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Affiliation(s)
- Aleya Khalifa
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA; ICAP at Columbia University, New York, NY.
| | - Byoungjun Kim
- Department of Surgery, New York University Grossman School of Medicine, New York, NY.
| | - Seann Regan
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA.
| | - Tyrone Moline
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY.
| | - Basile Chaix
- Sorbonne Université, INSERM, Institut Pierre Louis d'Épidémiologie et de Santé Publique, Némésis Research Team, Paris.
| | - Yen-Tyng Chen
- Edward J. Bloustein School of Planning and Public Policy, Rutgers University, New Brunswick, NJ.
| | - John Schneider
- Department of Medicine, Public Health Sciences, University of Chicago, Chicago, IL.
| | - Dustin T Duncan
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY.
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Shacham E, Scroggins SE, Ellis M. Implementing Geospatial Science and Technology to Get to Zero New HIV Infections. Curr HIV/AIDS Rep 2023; 20:139-147. [PMID: 37145264 DOI: 10.1007/s11904-023-00658-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
PURPOSE OF REVIEW Tremendous advancements have been made in HIV treatment and prevention during the last 40 years that zero new HIV cases has become an attainable goal declared by international agencies. However, new cases of HIV infection persist. RECENT FINDINGS The emerging field of geospatial science is positioned to play key role in the reduction of continued HIV incidence through technology-driven interventions and innovative research that gives insights into at-risk populations. As these methods become more utilized, findings consistently show the important role of location and environment plays in HIV incidence and treatment adherence. This includes distance to HIV provider, locations of where HIV transmissions occurs compared to where people with HIV reside, and how geospatial technology has been leveraged to identify unique insights among varying groups of those at increased risk for HIV, among others. Given these insights, leveraging geospatial technology would play a prominent role in achieving zero new cases of HIV infections.
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Affiliation(s)
- Enbal Shacham
- College for Public Health and Social Justice, Saint Louis University, 3545 Lafayette Avenue, St. Louis, MO, 63104, USA.
- Taylor Geospatial Institute, St. Louis, MO, USA.
| | | | - Matthew Ellis
- Department of Psychiatry, School of Medicine, Washington University, St. Louis, MO, USA
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Duncan DT, Cook SH, Wood EP, Regan SD, Chaix B, Tian Y, Chunara R. Structural racism and homophobia evaluated through social media sentiment combined with activity spaces and associations with mental health among young sexual minority men. Soc Sci Med 2023; 320:115755. [PMID: 36739708 PMCID: PMC10014849 DOI: 10.1016/j.socscimed.2023.115755] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 01/20/2023] [Accepted: 01/29/2023] [Indexed: 02/01/2023]
Abstract
BACKGROUND Research suggests that structural racism and homophobia are associated with mental well-being. However, structural discrimination measures which are relevant to lived experiences and that evade self-report biases are needed. Social media and global-positioning systems (GPS) offer opportunity to measure place-based negative racial sentiment linked to relevant locations via precise geo-coding of activity spaces. This is vital for young sexual minority men (YSMM) of color who may experience both racial and sexual minority discrimination and subsequently poorer mental well-being. METHODS P18 Neighborhood Study (n = 147) data were used. Measures of place-based negative racial and sexual-orientation sentiment were created using geo-located social media as a proxy for racial climate via socially-meaningfully-defined places. Exposure to place-based negative sentiment was computed as an average of discrimination by places frequented using activity space measures per person. Outcomes were number of days of reported poor mental health in last 30 days. Zero-inflated Poisson regression analyses were used to assess influence of and type of relationship between place-based negative racial or sexual-orientation sentiment exposure and mental well-being, including the moderating effect of race/ethnicity. RESULTS We found evidence for a non-linear relationship between place-based negative racial sentiment and mental well-being among our racially and ethnically diverse sample of YSMM (p < .05), and significant differences in the relationship for different race/ethnicity groups (p < .05). The most pronounced differences were detected between Black and White non-Hispanic vs. Hispanic sexual minority men. At two standard deviations above the overall mean of negative racial sentiment exposure based on activity spaces, Black and White YSMM reported significantly more poor mental health days in comparison to Hispanic YSMM. CONCLUSIONS Effects of discrimination can vary by race/ethnicity and discrimination type. Experiencing place-based negative racial sentiment may have implications for mental well-being among YSMM regardless of race/ethnicity, which should be explored in future research including with larger samples sizes.
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Affiliation(s)
- Dustin T Duncan
- Department of Epidemiology, Columbia University Mailman School of Public Health, NewYork, NY, USA
| | - Stephanie H Cook
- Department of Social and Behavioral Sciences, New York University School of Global Public Health, New York, NY, USA; Department of Biostatistics, New York University School of Global Public Health, New York, NY, USA
| | - Erica P Wood
- Department of Social and Behavioral Sciences, New York University School of Global Public Health, New York, NY, USA
| | - Seann D Regan
- Department of Epidemiology, Columbia University Mailman School of Public Health, NewYork, NY, USA
| | - Basile Chaix
- French National Institute of Health and Medical Research (INSERM), Sorbonne Université, Institut Pierre Louis D'Epidémiologie et de Santé Publique IPLESP, Nemesis Team, F75012, Paris, France
| | - Yijun Tian
- Department of Computer Science and Engineering, New York University Tandon School of Engineering, New York, NY, USA
| | - Rumi Chunara
- Department of Biostatistics, New York University School of Global Public Health, New York, NY, USA; Department of Computer Science and Engineering, New York University Tandon School of Engineering, New York, NY, USA.
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Huber BD, Kim B, Chaix B, Regan SD, Duncan DT. Objective and Subjective Neighborhood Crime Associated with Poor Sleep among Young Sexual Minority Men: a GPS Study. J Urban Health 2022; 99:1115-1126. [PMID: 35931941 PMCID: PMC9727059 DOI: 10.1007/s11524-022-00674-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/19/2022] [Indexed: 01/14/2023]
Abstract
Sleep disparities in sexual minority male (SMM) populations have received relatively little attention but they may be critical to explaining other health disparities seen among SMM, via neural or hormonal pathways. Recent research suggests that crime may be a psychosocial stressor that contributes to sleep disparities but that finding has been based on subjective measures of crime. We conducted the P18 Neighborhood Study of 250 SMM in New York City, including 211 with adequate GPS tracking data. We used the GPS tracking data to define daily path area activity spaces and tested the associations of violent crime in those activity spaces and in the subject's residential neighborhood, perceived neighborhood safety, and witnessing crime with a subjective measure of sleep. Using quasi-Poisson regression, adjusted for individual and neighborhood socio-demographics, we found that SMM who witnessed more types of crime experienced significantly more nights of poor sleep over the course of a month (RR: 1.16, 95%CI: 1.05-1.27, p-value: < 0.01). We did not find any associations between violent crime rates in either the activity area or residential area and sleep. Our findings support the conclusion that personal exposure to crime is associated with sleep problems and provide further evidence for the pathway between stress and sleep. The lack of association between neighborhood crime levels and sleep suggests that there must be personal experience with crime and ambient presence is insufficient to produce an effect.
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Affiliation(s)
- Benjamin D Huber
- Department of Epidemiology, Columbia Spatial Epidemiology Lab, Columbia University Mailman School of Public Health, 722 West 168th Street, New York, NY, 10032, USA.
| | - Byoungjun Kim
- Department of Epidemiology, Columbia Spatial Epidemiology Lab, Columbia University Mailman School of Public Health, 722 West 168th Street, New York, NY, 10032, USA
- Department of Population Health, New York University Grossman School of Medicine, 550 1st Ave, New York, NY, 10016, USA
| | - Basile Chaix
- Sorbonne Université, INSERM, Institut Pierre Louis d'Epidémiologie Et de Santé Publique IPLESP, Nemesis team, F75012, Paris, France
| | - Seann D Regan
- Department of Epidemiology, Columbia Spatial Epidemiology Lab, Columbia University Mailman School of Public Health, 722 West 168th Street, New York, NY, 10032, USA
| | - Dustin T Duncan
- Department of Epidemiology, Columbia Spatial Epidemiology Lab, Columbia University Mailman School of Public Health, 722 West 168th Street, New York, NY, 10032, USA
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Chen TA, Smith NG, Regan SD, Obasi EM, Anderson KF, Reitzel LR. Combining Global Positioning System (GPS) with saliva collection among sexual minority adults: A feasibility study. PLoS One 2021; 16:e0250333. [PMID: 33956852 PMCID: PMC8101753 DOI: 10.1371/journal.pone.0250333] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 04/04/2021] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND This is the first study, of which we are aware, to evaluate the feasibility and accessibility of simultaneous use of Global Positioning System (GPS) and saliva collection for biomarker assessment as an objective measure of stress physiology among sexual minority (lesbian, gay, bisexual, queer, and other non-heterosexual identities) individuals. The principal motivation for pairing GPS and saliva collection was to investigate how characteristics of the built and social environments along with participants' daily activity paths affect stress. This can contribute to a better understanding of health and health behaviors in the sexual minority community. METHODS A convenience sample of enrolled participants (N = 124) from Houston, Texas was asked to complete questionnaires, carry with them a GPS unit daily, and collect and store 6 samples of saliva at specific times across the span of a day prior to a second visit around one week later. RESULTS Of 124 participants, 16 participants (12.90%) provided no useable GPS data and 98 (79.03%) provided at least 4 days of data. More than three-fourths (n = 98, 79.03%) also provided complete saliva samples. CONCLUSIONS Our results show that the simultaneous use of GPS and saliva collection to assess sexual minority individuals' activity paths and stress level is feasible.
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Affiliation(s)
- Tzuan A. Chen
- HEALTH Research Institute, University of Houston, Houston, Texas, United States of America
- Department of Psychological, Health, and Learning Sciences, University of Houston, Houston, Texas, United States of America
| | - Nathan Grant Smith
- HEALTH Research Institute, University of Houston, Houston, Texas, United States of America
- Department of Psychological, Health, and Learning Sciences, University of Houston, Houston, Texas, United States of America
| | - Seann D. Regan
- Department of Epidemiology, Columbia University Mailman School of Public Health, New York, New York, United States of America
| | - Ezemenari M. Obasi
- HEALTH Research Institute, University of Houston, Houston, Texas, United States of America
- Department of Psychological, Health, and Learning Sciences, University of Houston, Houston, Texas, United States of America
| | - Kathryn Freeman Anderson
- HEALTH Research Institute, University of Houston, Houston, Texas, United States of America
- Department of Sociology, University of Houston, Houston, Texas, United States of America
| | - Lorraine R. Reitzel
- HEALTH Research Institute, University of Houston, Houston, Texas, United States of America
- Department of Psychological, Health, and Learning Sciences, University of Houston, Houston, Texas, United States of America
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Salau J, Hildebrandt F, Czycholl I, Krieter J. "HerdGPS-Preprocessor"-A Tool to Preprocess Herd Animal GPS Data; Applied to Evaluate Contact Structures in Loose-Housing Horses. Animals (Basel) 2020; 10:E1932. [PMID: 33096646 PMCID: PMC7589659 DOI: 10.3390/ani10101932] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 10/14/2020] [Accepted: 10/15/2020] [Indexed: 11/17/2022] Open
Abstract
Sensors delivering information on the position of farm animals have been widely used in precision livestock farming. Global Positioning System (GPS) sensors are already known from applications in military, private and commercial environments, and their application in animal science is increasing. However, as trade-offs between sensor cost, battery life and sensor weight have to be made, GPS based studies scheduling long data collection periods and including a high number of animals, have to deal with problems like high hardware costs and data disruption during recharging of sensors. Furthermore, human-animal interaction due to sensor changing at the end of battery life interferes with the animal behaviour under analysis. The present study thus proposes a setting to deal with these challenges and offers the software tool "HerdGPS-Preprocessor", because collecting position data from multiple animals nonstop for several weeks produces a high amount of raw data which needs to be sorted, preprocessed and provided in a suitable format per animal and day. The software tool "HerdGPS-Preprocessor" additionally outputs contact lists to enable a straight analysis of animal contacts. The software tool was exemplarily deployed for one month of daily and continuous GPS data of 40 horses in a loose-housing boarding facility in northern Germany. Contact lists were used to generate separate networks for every hour, which are then analysed with regard to the network parameter density, diameter and clique structure. Differences depending on the day and the day time could be observed. More dense networks with more and larger cliques were determined in the hours prior to the opening of additional pasture.
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Affiliation(s)
- Jennifer Salau
- Institute of Animal Breeding and Husbandry, Christian-Albrechts-University Kiel, Olshausenstraße 40, 24098 Kiel, Germany; (F.H.); (I.C.); (J.K.)
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