{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,26]],"date-time":"2025-10-26T21:11:17Z","timestamp":1761513077940,"version":"build-2065373602"},"reference-count":32,"publisher":"CSIRO Publishing","issue":"3","license":[{"start":{"date-parts":[[2025,8,29]],"date-time":"2025-08-29T00:00:00Z","timestamp":1756425600000},"content-version":"vor","delay-in-days":4981,"URL":"https:\/\/doi.org\/10.1071\/journalslicense"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2012,6,15]]},"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Concurrent sexual partnerships can increase sexually transmissible infections (STI) transmission on a population level. However, different concurrency types may be associated with differential risks for transmission. To investigate this, we describe the prevalence and correlates of four specific concurrency types. Methods: Between 2001 and 2004, 1098 young adults attending three STI clinics were interviewed and tested for STIs. Characteristics associated with concurrency types were identified using logistic regression. Results: Approximately one-third of respondents reported reactive (34%), transitional (36%), compensatory (32%) and experimental (26%) concurrency. Among men, reactive concurrency was associated with not identifying as heterosexual, drug use and having sex the same day as meeting a partner. Among women, reactive concurrency was associated with African-American race and having &amp;gt;3 lifetime partners. Transitional concurrency was associated with &amp;gt;3 lifetime partners for men and women. Among men, compensatory concurrency was associated with African-American race; among women, there were no associations with compensatory concurrency. Among men, experimental concurrency was associated with &amp;gt;3 lifetime partners and having sex the same day as meeting a partner. Among women, experimental concurrency was associated with not identifying as heterosexual, drug use and having sex the same day as meeting a partner. Conclusions: All concurrency types were common in this population and each was associated with a set of demographic and risk factors. Reactive and experimental concurrency types were associated with other high-risk behaviours, such as drug use.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1071\/sh11047","type":"journal-article","created":{"date-parts":[[2012,1,9]],"date-time":"2012-01-09T00:10:32Z","timestamp":1326067832000},"page":"280-287","source":"Crossref","is-referenced-by-count":9,"title":["Risk behaviours by type of concurrency among young people in three STI clinics in the United States"],"prefix":"10.1071","volume":"9","author":[{"given":"Kristen L.","family":"Hess","sequence":"first","affiliation":[{"name":"ASchool of Public Health, Department of Epidemiology, University of California Los Angeles, 10880 Wilshire Blvd, Suite 1800, Los Angeles, CA 90024, USA."},{"name":"FCorresponding author. Email: khess@ucla.edu"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pamina M.","family":"Gorbach","sequence":"additional","affiliation":[{"name":"ASchool of Public Health, Department of Epidemiology, University of California Los Angeles, 10880 Wilshire Blvd, Suite 1800, Los Angeles, CA 90024, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lisa E.","family":"Manhart","sequence":"additional","affiliation":[{"name":"BSchool of Public Health, Department of Epidemiology, University of Washington, Harborview Medical Center, Box 359931, 325 9th Avenue, Seattle, WA 98104, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bradley P.","family":"Stoner","sequence":"additional","affiliation":[{"name":"CDepartment of Anthropology, Washington University St. Louis, Campus Box 1114, 1 Brookings Drive, St. Louis, MO 63130, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David H.","family":"Martin","sequence":"additional","affiliation":[{"name":"DSchool of Medicine, Department of Internal Medicine, Louisiana State University, 1542 Tulane Avenue, Suite 331, Box T4M-2, New Orleans, LA 70112, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"King K.","family":"Holmes","sequence":"additional","affiliation":[{"name":"ESchool of Public Health, Department of Global Health, University of Washington, Box 359931, 908 Jefferson Street, Seattle, WA 98104, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"67","published-online":{"date-parts":[[2012,1,9]]},"reference":[{"issue":"5","key":"2025102617013823400_R1","doi-asserted-by":"publisher","first-page":"641","DOI":"10.1097\/00002030-199705000-00012","article-title":"Concurrent partnerships and the spread of 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