Table 1 Basal characteristics depending on histopathological classification

Age (year)

63.3 (59.0–68.3)

62.6 (53.8–66.8)

BMI (kg/m²)

Missing value

24.7 (21.8–29.2)

39

24.9 (23.0–27.4)

Refractory MC

56 (60.9)

32 (48.5)

IBS

49 (53.3)

38 (57.6)

Disease duration (years)

Missing value

8.0 (3.0–13.5)

7

8.0 (4.0–16.0)

8

University education

Missing value

28 (30.4)

26 (39.4)

Occupation

Employed

42 (45.7)

28 (42.2)

Retired

44 (47.8)

35 (53.0)

Others

6 (6.5)

3 (4.5)

Married/living together

Missing value

58 (63.0)

31 (47.0)

Smoking

Never smoking

23 (25.0)

18 (27.3)

Past smoking

36 (39.1)

28 (42.4)

Present smoking

33 (35.9)

20 (30.3)

Snuff users

Missing value

2 (2.2)

3

2 (3.0)

3

Nicotine chewing gum

Missing value

11 (12.0)

2

3 (4.5)

1

The number of days drinking/month

Missing value

6 (2–10)

25

4 (2–10)

16

Number of standard glasses each day of drinking

Never drinking

5 (5.4)

10 (15.1)

1

13 (14.1)

4 (6.1)

2

29 (31.5)

21 (31.8)

3

7 (7.6)

5 (7.6)

4

2 (2.2)

3 (4.5)

 ≥ 5

2 (3.0)

Missing value

36

21