title: Risk behaviors, medical care, and chlamydial infection among young men in the United States.
abstract: OBJECTIVE
  This study assessed factors related to chlamydial infection among young men in the United States.
  
  
  METHODS
  Data were from interviews of nationally representative samples of 470 men aged 18 to 19 years (teenagers) and 995 men aged 22 to 26 years (young adults) and from urine specimens tested by means of polymerase chain reaction.
  
  
  RESULTS
  Although a majority of the men reported occasional unprotected intercourse, only a minority perceived themselves to be at risk for contracting a sexually transmitted disease (STD). Chlamydial infection was detected in 3.1% of the teenagers and 4.5% of the young adults. A minority of those infected had symptoms or had been tested for STDs; very few had been diagnosed with STDs.
  
  
  CONCLUSIONS
  Chlamydial infection is common but usually asymptomatic and undiagnosed. Primary and secondary prevention efforts should be increased, particularly among young adult men.
authors.affiliation: Urban Institute, Washington, DC, USA. ku@cbpp.org
authors.forename: Leighton
authors.initials: L
authors.lastname: Ku
authors.forename: Michael
authors.initials: M
authors.lastname: St  Louis
authors.forename: Carol
authors.initials: C
authors.lastname: Farshy
authors.forename: Sevgi
authors.initials: S
authors.lastname: Aral
authors.forename: Charles F
authors.initials: CF
authors.lastname: Turner
authors.forename: Laura D
authors.initials: LD
authors.lastname: Lindberg
authors.forename: Freya
authors.initials: F
authors.lastname: Sonenstein
mesh_terms: D000293:Adolescent; D000328:Adult; D001741:Black or African American / Q000523:psychology / Q000706:statistics & numerical data; D001294:Attitude to Health / Q000208:ethnology; D002690:Chlamydia Infections / Q000453:epidemiology* / Q000208:ethnology / Q000652:urine; D006306:Health Surveys; D006801:Humans; D007407:Interviews as Topic; D008297:Male; D016133:Polymerase Chain Reaction; D012307:Risk Factors; D012309:Risk-Taking; D012725:Sexual Behavior / Q000208:ethnology; D014481:United States / Q000453:epidemiology