Table 1 Characteristics of study patients and colonoscopic findings

Total

102

Gender

 Male

65 (64 %)

 Female

47 (36 %)

Number of colonoscopy

 Once

71 (70 %)

 Twice

28 (27 %)

 3 times

3 (3 %)

Complete colonoscopy

 Total number

136

 Median age in years (IQR)

44.5 (31.0-63.5)

 Median duration of disease in years (IQR)

7.0 (4.0-12.5)

 Clinical activity

  Remission

104 (76 %)

  Active

32 (24 %)

Purpose of colonoscopy

 Evaluation of disease

46 (34 %)

 Surveillance

90 (66 %)

Concomitant medications

 Aminosalicylate

129 (95 %)

  Topical aminosalicylate

35 (26 %)

 Corticosteroids

23 (17 %)

  Topical steroids

8 (6 %)

 Azathioprine/Mercaptopurine

37 (27 %)

 Tacrolimus

11 (8 %)

 Biologics

13 (10 %)

 Mayo endoscopic subscore 0

35 (26 %)

 Mayo endoscopic subscore 1

33 (24 %)

 Mayo endoscopic subscore 2

47 (35 %)

 Mayo endoscopic subscore 3

21 (15 %)

Biochemical Results

 Median C-reactive protein (mg/l) (IQR)

0.05 (0.03-0.12)

 Median serum albumin (g/l) (IQR)

4.4 (4.0-4.6)

 Median white blood cell count (10³×/μL) (IQR)

5.88 (4.86-7.52)

 Median hemoglobin (g/dL) (IQR)

13.8 (12.2-14.9)

 Median platelet count (10⁴×/μL) (IQR)

24.7 (20.8-29.3)