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Department of Surgery, Kyung Hee University School of Medicine, Seoul, Korea.
1Department of Colon and Rectal Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
2Department of Surgery, Yonsei University College of Medicine, Seoul, Korea.
3Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
4Department of Surgery, Seoul National University College of Medicine, Seoul, Korea.
5Department of Surgery, Kyungpook National University School of Medicine, Daegu, Korea.
6Department of Surgery, Hansol Hospital, Seoul, Korea.
7Department of Statistics, College of Political Science and Economics, Korea University, Seoul, Korea.
© 2012 The Korean Society of Coloproctology
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Baseline population characteristics
Values are presented as number (%) or mean ± SD.
Montreal classification of Crohn's disease
aL4 is a modifier that can be added to L1-L3 when concomitant upper gastrointestinal disease is present. bp is added to B1-B3 when concomitant perianal disease is present.
Allocation of patients to the 36 subgroups of the Montreal classification
Values are presented as percentage.
A, age at diagnosis; A1, ≤16 yr; A2, 17-40 yr; A3, ≥41 yr; B, behavior; B1, non-stricturing, non-penetrating; B2, structuring; B3, penetrating; L, location; L1, ileal; L2, colonic; L3, ileocolonic; L4, isolated upper disease.
Causes of abdominal surgery in Crohn's disease patients
Values are presented as number (%).
Types of abdominal surgery in Crohn's disease patients
Values are presented as number (%).
Univariate and multivariate analyses of risk factors for repeat abdominal surgery in Crohn's disease patients
OR, odds ratio; CI, confidence interval; IPAA, ileal pouch anal anastomosis.
Values are presented as number (%) or mean ± SD.
aL4 is a modifier that can be added to L1-L3 when concomitant upper gastrointestinal disease is present. bp is added to B1-B3 when concomitant perianal disease is present.
Values are presented as percentage. A, age at diagnosis; A1, ≤16 yr; A2, 17-40 yr; A3, ≥41 yr; B, behavior; B1, non-stricturing, non-penetrating; B2, structuring; B3, penetrating; L, location; L1, ileal; L2, colonic; L3, ileocolonic; L4, isolated upper disease.
Values are presented as number (%).
Values are presented as number (%).
OR, odds ratio; CI, confidence interval; IPAA, ileal pouch anal anastomosis.