Table 1 Clinical and laboratory characteristics of the training cohort

Age, years

32 (24–46)

32 (26–46)

0.685

Male, n (%)

52 (61.90)

52 (61.90)

1

Symptoms

Abdominal pain

33 (39.29)

32 (38.10)

0.874

Diarrhea

8 (9.52)

33 (39.29)

 < 0.0001

Gastrointestinal bleeding

8 (9.52)

11 (13.10)

0.465

Weight loss

33 (39.29)

25 (29.76)

0.194

Fever

5 (5.95)

2 (2.38)

0.443

Perianal diseases

11 (13.10)

33 (39.29)

 < 0.0001

History of appendicectomy

6 (7.14)

4 (4.76)

0.514

Anemia

21 (25)

33 (39.29)

0.047

PLT > 300*10^9/L

29 (34.52)

47 (55.95)

0.005

WBC > 10*10^9/L

10 (11.90)

12 (14.29)

0.647

ESR > 20 mm/h^#

52 (61.90)

55 (66.27)

0.557

Hypoalbuminemia

19 (22.62)

29 (34.52)

0.088

hsCRP > 3 mg/L^#

42 (50.60)

65 (78.31)

 < 0.0001

Positive occult blood test^#

18 (21.69)

29 (36.25)

0.04

Positive PPD skin test^#

57 (68.67)

9 (12.5)

 < 0.0001

Positive IGRAs

76 (90.48)

12 (14.29)

 < 0.0001