Development, validation, and responsiveness of a novel disease activity index for intestinal Behcet's disease

JaeHee Cheon, Dong Soo Han, Jeong Youp Park, Byong Duk Ye, Sung Ae Jung, Young Sook Park, You Sun Kim, Joo Sung Kim, Chung Mo Nam, Youn Nam Kim, Suk Kyun Yang, Won Ho Kim

Research output: Contribution to journalArticle

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Abstract

Background: There is no disease activity index (DAI) currently available that can objectively assess the disease status of intestinal Behçet's disease (BD). The aim of this study was to develop a novel specific DAI for intestinal BD through a prospective study. Methods: Items included in the index were produced and graded by experts in intestinal BD. Two separate cohorts of patients (weighting and validation cohorts) with intestinal BD were prospectively enrolled, and their clinical and laboratory data were collected. Through weighting items by multiple regression modeling, the DAI for intestinal BD (DAIBD) was derived using the weighting cohort and validated using the validation cohort. The index's responsiveness was evaluated using a longitudinal cohort derived from the weighting cohort at a follow-up visit 2-3 months later. Results: A total of 110 patients with intestinal BD were enrolled in the weighting cohort. Eight of the 17 items selected by the experts accounted for 86.8% of the physician's global assessment (PGA) variance. The DAIBD calculated with gradations of weighted items correlated more strongly with PGA (r = 0.850) than did the Crohn's disease activity index (CDAI) (r = 0.649) in 50 patients of the validation cohort. Furthermore, quiescent, mild, moderate, and severe could be discriminated using the best cutoff scores. The DAIBD showed much higher responsiveness than did the CDAI (r = 0.812 vs. 0.645, respectively) in 109 patients in the longitudinal cohort. Conclusions: This novel DAIBD is an easy, valid, and responsive index to assess disease activity and can be useful to physicians who treat intestinal BD. Inflamm Bowel Dis 2011

Original languageEnglish
Pages (from-to)605-613
Number of pages9
JournalInflammatory Bowel Diseases
Volume17
Issue number2
DOIs
Publication statusPublished - 2011 Feb 1

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Intestinal Diseases
Behcet Syndrome
Physicians
Crohn Disease
Prospective Studies

All Science Journal Classification (ASJC) codes

  • Immunology and Allergy
  • Gastroenterology

Cite this

Cheon, JaeHee ; Han, Dong Soo ; Park, Jeong Youp ; Ye, Byong Duk ; Jung, Sung Ae ; Park, Young Sook ; Kim, You Sun ; Kim, Joo Sung ; Nam, Chung Mo ; Kim, Youn Nam ; Yang, Suk Kyun ; Kim, Won Ho. / Development, validation, and responsiveness of a novel disease activity index for intestinal Behcet's disease. In: Inflammatory Bowel Diseases. 2011 ; Vol. 17, No. 2. pp. 605-613.
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abstract = "Background: There is no disease activity index (DAI) currently available that can objectively assess the disease status of intestinal Beh{\cc}et's disease (BD). The aim of this study was to develop a novel specific DAI for intestinal BD through a prospective study. Methods: Items included in the index were produced and graded by experts in intestinal BD. Two separate cohorts of patients (weighting and validation cohorts) with intestinal BD were prospectively enrolled, and their clinical and laboratory data were collected. Through weighting items by multiple regression modeling, the DAI for intestinal BD (DAIBD) was derived using the weighting cohort and validated using the validation cohort. The index's responsiveness was evaluated using a longitudinal cohort derived from the weighting cohort at a follow-up visit 2-3 months later. Results: A total of 110 patients with intestinal BD were enrolled in the weighting cohort. Eight of the 17 items selected by the experts accounted for 86.8{\%} of the physician's global assessment (PGA) variance. The DAIBD calculated with gradations of weighted items correlated more strongly with PGA (r = 0.850) than did the Crohn's disease activity index (CDAI) (r = 0.649) in 50 patients of the validation cohort. Furthermore, quiescent, mild, moderate, and severe could be discriminated using the best cutoff scores. The DAIBD showed much higher responsiveness than did the CDAI (r = 0.812 vs. 0.645, respectively) in 109 patients in the longitudinal cohort. Conclusions: This novel DAIBD is an easy, valid, and responsive index to assess disease activity and can be useful to physicians who treat intestinal BD. Inflamm Bowel Dis 2011",
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Cheon, J, Han, DS, Park, JY, Ye, BD, Jung, SA, Park, YS, Kim, YS, Kim, JS, Nam, CM, Kim, YN, Yang, SK & Kim, WH 2011, 'Development, validation, and responsiveness of a novel disease activity index for intestinal Behcet's disease', Inflammatory Bowel Diseases, vol. 17, no. 2, pp. 605-613. https://doi.org/10.1002/ibd.21313

Development, validation, and responsiveness of a novel disease activity index for intestinal Behcet's disease. / Cheon, JaeHee; Han, Dong Soo; Park, Jeong Youp; Ye, Byong Duk; Jung, Sung Ae; Park, Young Sook; Kim, You Sun; Kim, Joo Sung; Nam, Chung Mo; Kim, Youn Nam; Yang, Suk Kyun; Kim, Won Ho.

In: Inflammatory Bowel Diseases, Vol. 17, No. 2, 01.02.2011, p. 605-613.

Research output: Contribution to journalArticle

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AU - Han, Dong Soo

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AU - Jung, Sung Ae

AU - Park, Young Sook

AU - Kim, You Sun

AU - Kim, Joo Sung

AU - Nam, Chung Mo

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AU - Yang, Suk Kyun

AU - Kim, Won Ho

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N2 - Background: There is no disease activity index (DAI) currently available that can objectively assess the disease status of intestinal Behçet's disease (BD). The aim of this study was to develop a novel specific DAI for intestinal BD through a prospective study. Methods: Items included in the index were produced and graded by experts in intestinal BD. Two separate cohorts of patients (weighting and validation cohorts) with intestinal BD were prospectively enrolled, and their clinical and laboratory data were collected. Through weighting items by multiple regression modeling, the DAI for intestinal BD (DAIBD) was derived using the weighting cohort and validated using the validation cohort. The index's responsiveness was evaluated using a longitudinal cohort derived from the weighting cohort at a follow-up visit 2-3 months later. Results: A total of 110 patients with intestinal BD were enrolled in the weighting cohort. Eight of the 17 items selected by the experts accounted for 86.8% of the physician's global assessment (PGA) variance. The DAIBD calculated with gradations of weighted items correlated more strongly with PGA (r = 0.850) than did the Crohn's disease activity index (CDAI) (r = 0.649) in 50 patients of the validation cohort. Furthermore, quiescent, mild, moderate, and severe could be discriminated using the best cutoff scores. The DAIBD showed much higher responsiveness than did the CDAI (r = 0.812 vs. 0.645, respectively) in 109 patients in the longitudinal cohort. Conclusions: This novel DAIBD is an easy, valid, and responsive index to assess disease activity and can be useful to physicians who treat intestinal BD. Inflamm Bowel Dis 2011

AB - Background: There is no disease activity index (DAI) currently available that can objectively assess the disease status of intestinal Behçet's disease (BD). The aim of this study was to develop a novel specific DAI for intestinal BD through a prospective study. Methods: Items included in the index were produced and graded by experts in intestinal BD. Two separate cohorts of patients (weighting and validation cohorts) with intestinal BD were prospectively enrolled, and their clinical and laboratory data were collected. Through weighting items by multiple regression modeling, the DAI for intestinal BD (DAIBD) was derived using the weighting cohort and validated using the validation cohort. The index's responsiveness was evaluated using a longitudinal cohort derived from the weighting cohort at a follow-up visit 2-3 months later. Results: A total of 110 patients with intestinal BD were enrolled in the weighting cohort. Eight of the 17 items selected by the experts accounted for 86.8% of the physician's global assessment (PGA) variance. The DAIBD calculated with gradations of weighted items correlated more strongly with PGA (r = 0.850) than did the Crohn's disease activity index (CDAI) (r = 0.649) in 50 patients of the validation cohort. Furthermore, quiescent, mild, moderate, and severe could be discriminated using the best cutoff scores. The DAIBD showed much higher responsiveness than did the CDAI (r = 0.812 vs. 0.645, respectively) in 109 patients in the longitudinal cohort. Conclusions: This novel DAIBD is an easy, valid, and responsive index to assess disease activity and can be useful to physicians who treat intestinal BD. Inflamm Bowel Dis 2011

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