title: Prevalence and epidemiologic characteristics of urolithiasis in Seoul, Korea.
abstract: OBJECTIVE
  To study the epidemiologic details of urolithiasis in Seoul, Korea. The prevalence of urolithiasis varies by different regions in the world and has been reported to be 4% to 15%.
  
  
  METHODS
  A total of 2643 persons 40 to 79 years old living in Seoul were selected by stepwise random sampling. Questionnaires were used and completed by trained interviewers concerning whether the subjects had experienced urinary stone disease at any time in their life.
  
  
  RESULTS
  Of 2643 persons interviewed, 65 experienced 78 episodes of urinary stone formation in their lifetime. Calibrated after the Seoul population census, the overall standardized lifetime prevalence rate was estimated to be 3.5%, 6.0% in men and 1.8% in women. The point prevalence rate was estimated to be 0.9%, 1.9% in men and 0.3% in women. Most of the urinary stone diseases were diagnosed at the fifth decade. Kidney stones in family members were present in 8.1% of patients with stones and 4.1% of stone-free control individuals. Twenty percent of the patients with stones experienced recurrences.
  
  
  CONCLUSIONS
  In this first systematically assessed epidemiologic survey about the rate of urolithiasis in Korea, 6.0% of Korean men and 1.8% of women are expected to experience urinary stone disease during their lifetime.
authors.affiliation: Department of Urology, Seoul National University College of Medicine, Seoul, Seoul, South Korea.
authors.forename: Hyeon hoe
authors.initials: Hh
authors.lastname: Kim
authors.forename: Moon Ki
authors.initials: MK
authors.lastname: Jo
authors.forename: Cheol
authors.initials: C
authors.lastname: Kwak
authors.forename: Sue Kyung
authors.initials: SK
authors.lastname: Park
authors.forename: Keun Young
authors.initials: KY
authors.lastname: Yoo
authors.forename: Daehee
authors.initials: D
authors.lastname: Kang
authors.forename: Chongwook
authors.initials: C
authors.lastname: Lee
mesh_terms: D000328:Adult; D017677:Age Distribution; D000368:Aged; D005260:Female; D006801:Humans; D007669:Kidney Calculi / Q000453:epidemiology; D007723:Korea / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D017678:Sex Distribution; D014505:Urban Population / Q000706:statistics & numerical data; D014514:Ureteral Calculi / Q000453:epidemiology; D014545:Urinary Calculi / Q000453:epidemiology*