title: Network Centrality and Geographical Concentration of Social and Service Venues that Serve Young Men Who Have Sex with Men.
abstract: This study examines network centrality of inter-venue networks formed by collaboration, competition, and sponsorship relationships among venues that serve young men who have sex with men (MSM) aged 16-29 years in relation to their geographical concentrations in Chicago, Illinois, and Houston, Texas. Our data on the physical venues comprised 116 venues in Chicago and 102 venues in Houston. We examined the relationship between the network centrality of different relations and the geographical intensity among these venues, and considered neighborhood-level socioeconomic determinants of health. The results indicate that young MSM-serving social and service venues found in close physical proximity to one another tend to have large centrality indegree values based on competition in both cities, and based on collaboration only in Chicago. No evidence, however, was found that occupying a central position in the sponsorship networks was related to geographic concentration. Combined, these results suggest that HIV prevention interventions should consider the organizing force for competition. Such a strategy could result in better services. However there may still be potential for overlap and redundancy in services at the expense of under-served regions where proven interventions could have the greatest impact.
authors.affiliation: Department of Health Promotion & Behavioral Sciences, School of Public Health, University of Texas Health Science Center at Houston, 7000 Fannin Street, UCT 2514, Houston, TX, 77030-5401, USA. kayo.fujimoto@uth.tmc.edu.
authors.forename: Kayo
authors.initials: K
authors.lastname: Fujimoto
authors.affiliation: Department of Statistics, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand.
authors.forename: Rolf
authors.initials: R
authors.lastname: Turner
authors.affiliation: Department of Pediatrics, Feinberg School of Medicine, Northwestern University & Division of Adolescent Medicine, Ann & Robert H. Lurie Children's Hospital, 225 E. Chicago Ave, #161, Chicago, IL, 60611, USA.
authors.forename: Lisa M
authors.initials: LM
authors.lastname: Kuhns
authors.affiliation: Department of Health Promotion & Behavioral Sciences, School of Public Health, University of Texas Health Science Center at Houston, 7000 Fannin Street, UCT 2514, Houston, TX, 77030-5401, USA.
authors.forename: Ju Yeong
authors.initials: JY
authors.lastname: Kim
authors.affiliation: Department of Health Promotion & Behavioral Sciences, School of Public Health, University of Texas Health Science Center at Houston, 7000 Fannin Street, UCT 2514, Houston, TX, 77030-5401, USA.
authors.forename: Jing
authors.initials: J
authors.lastname: Zhao
authors.affiliation: Department of Medicine and Public Health Sciences and the Chicago Center for HIV Elimination, University of Chicago, 5837 South Maryland Avenue MC 5065, Chicago, IL, 60637, USA.
authors.forename: John A
authors.initials: JA
authors.lastname: Schneider
mesh_terms: D000163:Acquired Immunodeficiency Syndrome; D000293:Adolescent; D000328:Adult; D002641:Chicago; D002947:Cities; D003430:Cross-Sectional Studies; D015658:HIV Infections / Q000517:prevention & control*; D018451:Homosexuality, Male; D006801:Humans; D008297:Male; D012111:Residence Characteristics; D012309:Risk-Taking; D066270:Social Capital; D012944:Social Support; D013781:Texas; D055815:Young Adult
keywords: Gay neighborhood; HIV; Social capital; Social network analysis; Spatial clustering; Young MSM