title: HIV prevalence, sociodemographic characteristics, and sexual behaviors among transwomen in Mexico City.
abstract: OBJECTIVE
  To present results from HIV testing, knowledge of HIV status and socioeconomic factors associated with the probability of having a HIV positive result among transwomen (TW) in Mexico.
  
  
  METHODS
  In 2012, we conducted an HIV seroprevalence survey to 585 TW in Mexico City in three strata: gathering places, the Condesa HIV Clinic and in four detention centers. We estimated the prevalence of HIV in each strata and applied a probit model to the overall sample to analyze factors associated with the probability of a HIV positive result.
  
  
  RESULTS
  The prevalence of HIV was 19.8% in meeting places; 31.9% in detention centers and 64% among the participants of the clinic. Age, low education and number of sexual partners was positively associated with HIV.
  
  
  CONCLUSIONS
  Results from the study provide relevant information to design HIV prevention interventions tailored to the needs of the TW population.
authors.affiliation: Instituto Nacional de Salud Pública, Cuernavaca, Morelos, México.
authors.forename: M Arantxa
authors.initials: MA
authors.lastname: Colchero
authors.affiliation: Instituto Nacional de Salud Pública, Cuernavaca, Morelos, México.
authors.forename: María Alejandra
authors.initials: MA
authors.lastname: Cortés-Ortiz
authors.affiliation: Instituto Nacional de Salud Pública, Cuernavaca, Morelos, México.
authors.forename: Martín
authors.initials: M
authors.lastname: Romero-Martínez
authors.affiliation: Clínica Especializada Condesa, México, Distrito Federal, México.
authors.forename: Hamid
authors.initials: H
authors.lastname: Vega
authors.affiliation: Clínica Especializada Condesa, México, Distrito Federal, México.
authors.forename: Andrea
authors.initials: A
authors.lastname: González
authors.affiliation: Inspira Cambio, AC., México.
authors.forename: Ricardo
authors.initials: R
authors.lastname: Román
authors.affiliation: Instituto Nacional de Salud Pública, Cuernavaca, Morelos, México.
authors.forename: Aurora
authors.initials: A
authors.lastname: Franco-Núñez
authors.affiliation: Instituto Nacional de Salud Pública, Cuernavaca, Morelos, México.
authors.forename: Sergio
authors.initials: S
authors.lastname: Bautista-Arredondo
mesh_terms: D000293:Adolescent; D000328:Adult; D000554:Ambulatory Care Facilities / Q000706:statistics & numerical data; D004522:Educational Status; D005260:Female; D015658:HIV Infections / Q000523:psychology / Q000635:transmission; D015528:HIV Seroprevalence; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D008297:Male; D008800:Mexico / Q000453:epidemiology; D008875:Middle Aged; D008962:Models, Theoretical; D011330:Prisons / Q000706:statistics & numerical data; D000072263:Private Facilities / Q000706:statistics & numerical data; D012307:Risk Factors; D012725:Sexual Behavior; D012747:Sexual Partners; D063106:Transgender Persons / Q000523:psychology; D014505:Urban Population; D055815:Young Adult