TABLE 1

Patient characteristics

ControlCDUC
IleitisRemissionPancolitisDistal UCRemission
Distribution of patients
 Number of patients9147545
 Sex (female/male)5/44/107/—2/32/21/4
 Age (mean in years)38 ± 930 ± 1039 ± 637 ± 1943 ± 2050 ± 16
Indication for colonoscopy
 Surveillance457225
 Abdominal pain2
 Stooling irregularitiesa331
 Flare of IBD631
Symptoms before colonoscopy
 Free of symptoms424235
 Diarrhea (stool frequency >3/day)5231
 Abdominal pain5411
 Nausea/vomiting2
 Painful arthropathy11
Surgical history
 Ileal resection53
 Colorectal resection21
 Anal fistula3
 Perianal abscess3
 Colorectal polypectomy31
  • a Diarrhea with stool frequency >3/day and/or obvious blood in the feces.