Table 1 Demographic and Clinical Characteristics for Patients with UC

Factors

N

Median (P25, P75)

N

Median (P25, P75)

P value

Age (y)

34

44.5 (29.0, 60.0)

68

44.5 (29.0, 60.0)

1.000

Median duration from UC diagnosis to CDAB test (mo)

34

27.0 (7.0, 108.5)

68

36.0 (13.5, 117.0)

0.467

Number of bowel movements (times/d)

34

7.0 (4.5, 10.0)

68

7.0 (5.0, 10.0)

0.947

Factors

N

Mean ± SD

N

Mean ± SD

P value

BMI

34

20.4745 ± 3.82787

68

21.2466 ± 4.10828

0.390

Peripheral venous white blood cell (10⁹/L)

34

8.0676 ± 2.82308

68

8.0554 ± 2.95580

0.984

Peripheral neutrophils (10⁹/L)

34

5.9118 ± 2.82888

68

5.5834 ± 2.70716

0.571

Factors

N

Positive (%)

N

Negative (%)

Male gender

16

47.1

32

47.1

1.000

Smoking status

0.866

Cessation ≥6 mo

2

5.9

7

10.3

Active smoker

4

11.8

9

13.2

Alcohol use

0.218

Cessation ≥6 mo

3

8.8

6

8.8

Active use

4

11.8

2

2.9

Diabetes

3

8.8

7

10.3

1.000

UC Truelove and Witts criteria

0.517

Mild

3

8.8

14

20.6

Moderate

18

52.9

28

41.2

Severe

13

38.2

26

38.2

Mayo score at colonoscopy

0.622

1

5

15.6

8

12.3

2

10

31.3

28

43.1

3

17

53.1

29

44.6

Distribution of UC

0.811

Proctitis

1

2.9

0

0.0

Left-sided colitis

8

23.5

17

25.0

Extensive colitis

25

73.5

51

75.0

History of surgery

2

5.9

3

4.4

1.000

Symptom-fever

7

20.6

15

22.1

0.865

Symptom-abdominal pain

16

47.1

43

63.2

0.119

Symptom-bleeding

27

79.4

63

92.6

0.099

Symptom-diarrhea

29

85.3

65

95.6

0.113

Dilation of colon

0.990

No

33

97.1

66

97.1

≥6 cm

1

2.9

1

1.5

≥8 cm

0

0.0

1

1.5

Subsequent surgery

9

27.3

11

16.2

0.189