title: Validation of the classification criteria commonly used in Korea and a modified set of preliminary criteria for Behçet's disease: a multi-center study.
abstract: OBJECTIVE
  Recently we have proposed a modified set of criteria to settle the questions raised regarding the International Study Group (ISG) criteria for Behçet's disease (BD). The aim of the present study was to validate the two pre-existing criteria sets commonly used in Korea, the ISG criteria and the criteria of the Behçet's Disease Research Committee of Japan (Japanese criteria), as well as the proposed modified criteria.
  
  
  METHODS
  The study population included 155 consecutive patients with BD and 170 controls with non-Behçet's rheumatic diseases. Detailed data for all of the subjects were recorded prospectively by the participating physicians on a standard form that listed the clinical features of BD. The sensitivity, specificity, and accuracy of each set of the criteria were measured.
  
  
  RESULTS
  Of the three criteria sets employed, the modified criteria were the most accurate, with an accuracy of 96.3%. The ISG criteria often failed to classify the following patients with BD: patients with only oral and genital ulcerations, certain patients with intestinal ulcerations, patients who did not manifest oral ulcerations, and patients with acute disease but fewer than three recurrent oral ulceration relapses in a 1-year period. The Japanese criteria also failed to categorize the following patients with BD: patients with oral and genital ulcerations, and patients with oral ulcerations, skin lesions, and a positive pathergy reaction. In addition, the Japanese criteria misclassified some of the control subjects with non-Behçet's uveitis as having BD.
  
  
  CONCLUSIONS
  The results of this study suggest that there are some points that need to be reconsidered in the clinical application of the two pre-existing sets of criteria. Although the modified criteria were the most accurate, further validation studies will be required in other ethnic populations.
authors.affiliation: Division of Rheumatology, Department of Internal Medicine, College of Medicine, Dankook University, 16-5 Anseo-Dong, Cheonan, Chungcheong Nam Do, 330-715, South Korea. hanks22@dankook.ac.kr
authors.forename: H K
authors.initials: HK
authors.lastname: Chang
authors.forename: S S
authors.initials: SS
authors.lastname: Lee
authors.forename: H J
authors.initials: HJ
authors.lastname: Bai
authors.forename: Y W
authors.initials: YW
authors.lastname: Lee
authors.forename: B Y
authors.initials: BY
authors.lastname: Yoon
authors.forename: C H
authors.initials: CH
authors.lastname: Lee
authors.forename: Y H
authors.initials: YH
authors.lastname: Lee
authors.forename: G G
authors.initials: GG
authors.lastname: Song
authors.forename: W T
authors.initials: WT
authors.lastname: Chung
authors.forename: S W
authors.initials: SW
authors.lastname: Lee
authors.forename: J Y
authors.initials: JY
authors.lastname: Choe
authors.forename: C G
authors.initials: CG
authors.lastname: Kim
authors.forename: D K
authors.initials: DK
authors.lastname: Chang
mesh_terms: D000328:Adult; D001528:Behcet Syndrome / Q000145:classification* / Q000175:diagnosis* / Q000208:ethnology; D003431:Cross-Cultural Comparison; D005260:Female; D006801:Humans; D007391:International Cooperation; D007564:Japan; D007723:Korea / Q000453:epidemiology; D008297:Male; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity