Table 5 Basal characteristics depending on smoking habits

Age (years)

64.9 (57.1–69.8)

65.3 (60.8–69.3)

60.0 (54.2–64.0)

 < 0.001

BMI (kg/m²)

Missing value

25.8 (24.1–29.9)

24.8 (23.0–28.7)

24.1 (21.7–26.6)

0.164

Refractory MC

27 (65.9)

26 (40.6)

35 (66.0)

0.007

CC/LC

23 (56.1)/18 (43.9)

36 (56.3)/28 (43.8)

33 (62.3)/20 (37.7)

0.788

IBS

19 (46.3)

31 (48.4)

37 (69.8)

0.030

Disease duration (years)

Missing value

7.0 (3.0–12.0)

5

6 (3.0–11.0)

4

10.0 (6.0–21.0)

6

0.021

University education

Missing value

16 (39.0)

1

17 (26.6)

1

21 (3.8)

2

0.397

Occupation

0.035

Employed

16 (39.0)

25 (39.1)

29 (54.7)

Retired

24 (58.5)

37 (57.8)

18 (34.0)

Others

1 (2.4)

2 (3.1)

6 (11.3)

Married/living together

Missing value

28 (68.3)

39 (60.9)

22 (41.5)

1

0.031

Snuff user

Missing value

1 (2.4)

3

3 (4.7)

1

0

0.363

Nicotine chewing gum

Missing value

0

2

4 (6.3)

1

10 (18.9)

0.005

The number of days drinking/month

Missing value

4 (1–8)

11

6 (3–10)

14

4 (0–9)

16

0.088

Number of standard glasses each day of drinking

0.107

Never drinking

3 (7.3)

3 (4.7)

9 (17.0)

1

7 (17.1)

5 (7.8)

5 (9.4)

2

13 (31.7)

25 (39.1)

12 (22.6)

3

1 (2.4)

7 (10.9)

4 (7.5)

4

1 (2.4)

3 (4.7)

1 (1.9)

 ≥ 5

1 (1.6)

1 (1.9)

Missing value

16

20

21