title: [Comparative analysis of serological tests performed in immigrants in the Lleida health area].
abstract: OBJECTIVE
  Evaluate the process of screening and detection of HIV, HBV, HCV and syphilis in the province of Lleida by determining the proportions of positive results in the different groups during one year.
  
  
  METHODS
  Descriptive, multicentre study of all the serological tests performed in immigrants and natives attended in 2007.
  
  
  METHODS
  Province of Lleida (Spain).
  
  
  METHODS
  255,410 users.
  
  
  METHODS
  Age, sex, country of origin and period of residence in Spain, and the results for HIV, hepatitis B, hepatitis C and syphilis. We calculated the proportions in which a serological test had been requested, and examined the association between the rates of positive tests and the geographical area of origin, and calculated age-adjusted rates taking the age distribution of the native population as the reference.
  
  
  RESULTS
  Risk of HBV was 4.6 times higher in immigrants than in natives (11.7 times in sub-Saharan Africans). The rate of positive syphilis tests was three times higher in the immigrant group. For HIV the PR was 2.3 (sub-Saharan Africans 7.4). For hepatitis C the risk was lower in immigrants than in natives (PR=0.4).
  
  
  CONCLUSIONS
  Immigrants have a higher probability of testing positive in screening in hepatitis B, syphilis and HIV. The rates differ significantly according to the origin of the immigrant.
authors.affiliation: Grupo de Estudio en Desigualdades en Salud de Lleida (GREDELL), Atención Primaria de Lleida, Institut Català de la Salut, Instituto Universitario de Investigación en Atención Primaria (IDIAP) Jordi Gol, Universidad de Lleida, Lleida, España. jorgesolergonzalez@gmail.com
authors.forename: Jorge
authors.initials: J
authors.lastname: Soler-González
authors.forename: Jordi
authors.initials: J
authors.lastname: Real
authors.forename: Joan
authors.initials: J
authors.lastname: Farré
authors.forename: Caty
authors.initials: C
authors.lastname: Serna
authors.forename: Inés
authors.initials: I
authors.lastname: Cruz
authors.forename: Cristina
authors.initials: C
authors.lastname: Ruiz
authors.forename: Anna
authors.initials: A
authors.lastname: Bosch
mesh_terms: D000328:Adult; D003430:Cross-Sectional Studies; D054242:Emigrants and Immigrants; D005260:Female; D015658:HIV Infections / Q000097:blood* / Q000175:diagnosis / Q000453:epidemiology; D006509:Hepatitis B / Q000097:blood* / Q000175:diagnosis / Q000453:epidemiology; D006526:Hepatitis C / Q000097:blood* / Q000175:diagnosis / Q000453:epidemiology; D006801:Humans; D008297:Male; D012698:Serologic Tests; D013030:Spain / Q000453:epidemiology; D013587:Syphilis / Q000097:blood* / Q000175:diagnosis / Q000453:epidemiology