title: [Sexually transmitted infections in male prison inmates: risk of development of new diseases].
abstract: OBJECTIVE
  To measure incidence and main risk factors related to sexually transmitted infections (STIs) in Daroca Prison (Zaragoza, Spain).
  
  
  METHODS
  A retrospective cohort study (2005-2013) to measure the incidence of STI and a cross-sectional study to measure risk factors.
  
  
  RESULTS
  Of the 203 inmates, 79 developed an STI, 37 had a previous STI, 55.2% lacked knowledge on STI prevention, and 28.9% showed behaviours unfavourable for STI prevention. The incidence rate was 6.5 STIs per 1,000 inmates-year. The most frequent STIs were hepatitis B (39.7%), Ureaplasma urealyticum (19.1%), herpes simplex (16.2%) and HIV (8.8%). The risk (hazard ratio, HR) of acquiring a new STI was significantly higher in inmates with a history of previous STI (HR=2.61; 95%CI: 1.01 to 6.69), and was at the limit of significance for non-preventive behaviour (HR=2.10; 95%CI: 0.98 to 4.53), but not in knowledge related to STIs (HR=1.33; 95%CI: 0.58 to 3.07).
  
  
  CONCLUSIONS
  The most important risk factors in prison are behaviours related to STIs and previous history of STIs. Other factors are being a repeat offender, injecting drug use, or being in a methadone programme. Health personnel and peer education can facilitate prevention and control.
authors.affiliation: Centro Penitenciario de Daroca, Secretaría General de Instituciones Penitenciarias, Ministerio del Interior, Zaragoza, España. Electronic address: rsanchezrecio.1979@gmail.com.
authors.forename: Raquel
authors.initials: R
authors.lastname: Sánchez Recio
authors.affiliation: Departamento de Microbiología, Medicina Preventiva y Salud Pública, Universidad de Zaragoza, Zaragoza, España.
authors.forename: Juan Pablo
authors.initials: JP
authors.lastname: Alonso Pérez de Ágreda
authors.affiliation: Departamento de Microbiología, Medicina Preventiva y Salud Pública, Universidad de Zaragoza, Zaragoza, España.
authors.forename: Javier
authors.initials: J
authors.lastname: Santabárbara Serrano
mesh_terms: D003430:Cross-Sectional Studies; D006801:Humans; D015994:Incidence; D008297:Male; D011329:Prisoners; D012189:Retrospective Studies; D012307:Risk Factors; D012749:Sexually Transmitted Diseases / Q000453:epidemiology / Q000635:transmission*; D013030:Spain / Q000453:epidemiology
keywords: Comportamiento sexual; Encuestas; Factores de riesgo; Health surveys; Incidence; Incidencia; Infecciones de transmisión sexual; Presos; Prisoners; Risk factors; Sexual behaviour; Sexually transmitted infections