title: Incidence of IgA vasculitis in the adult Slovenian population.
abstract: BACKGROUND
  IgA vasculitis (IgAV) is assumed to be uncommon in adults.
  
  
  OBJECTIVE
  To determine the incidence rate of histologically proven IgAV in the adult Slovenian population.
  
  
  METHODS
  A retrospective chart review of adult patients diagnosed with IgAV was performed at the departments of rheumatology, nephrology, infectious diseases and dermatovenereology at an integrated secondary/tertiary university teaching hospital. In order to avoid missing miscoded cases, the Institute of Pathology, University of Ljubljana, Slovenia, provided a list of all patients with an IgAV-compatible histological pattern on biopsy. The annual incidence rate of histologically proven IgAV was calculated.
  
  
  RESULTS
  Eighty-one new cases of IgAV were identified from June 2010 to June 2013. The estimated annual incidence rate of IgAV was 5·1 per 100,000 adults [95% confidence interval (CI) 3·4-7·4]; in men it was 6·1 per 100,000 (95% CI 3·9-10·6) and in women it was 3·7 per 100,000 (95% CI 1·8-6·8).
  
  
  CONCLUSIONS
  Although we only included histologically proven cases of IgAV, the annual incidence rate of 5·1 per 100,000 adults is 3-6-times higher than previously reported.
authors.affiliation: Department of Rheumatology, University Medical Centre Ljubljana, Ljubljana, Slovenia.
authors.forename: A
authors.initials: A
authors.lastname: Hočevar
authors.forename: Z
authors.initials: Z
authors.lastname: Rotar
authors.forename: J
authors.initials: J
authors.lastname: Ostrovršnik
authors.forename: V
authors.initials: V
authors.lastname: Jurčić
authors.forename: A
authors.initials: A
authors.lastname: Vizjak
authors.forename: M
authors.initials: M
authors.lastname: Dolenc Voljč
authors.forename: J
authors.initials: J
authors.lastname: Lindič
authors.forename: M
authors.initials: M
authors.lastname: Tomšič
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D007070:Immunoglobulin A; D015994:Incidence; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D017678:Sex Distribution; D017524:Slovenia / Q000453:epidemiology; D014657:Vasculitis / Q000453:epidemiology*; D055815:Young Adult
chemical_list: D007070:Immunoglobulin A