Table 4 Risk-taking behaviours and perceptions among case-groups and healthy controls

Smoking

 < .001

.150

.129

a-b***

b-c*

 Yes

36 (24.3%)

2 (2.9%)

6 (13.3%)

385 (7.4%)

 No

112 (75.7%)

68 (97.1%)

39 (86.7%)

4839 (92.6%)

e-cigarette smoking

 < .001

.012

.765

a-b***

a-c*

 Yes

67 (48.6%)

10 (15.6%)

10 (27.8%)

1438 (30.1%)

 No

71 (51.4%)

54 (84.4%)

26 (72.2%)

3344 (69.9%)

Hashish/marijuana smoking

.012

.038

.470

a-b**

b-c*

 Yes

32 (22.2%)

4 (5.8%)

8 (18.6%)

757 (14.7%)

 No

112 (77.8%)

65 (94.2%)

35 (81.4%)

4399 (85.3%)

Snuff use

 < .001

.392

.500

a-b*

 Yes

29 (19.6%)

5 (7.1%)

6 (13.3%)

536 (10.3%)

 No

119 (80.4%)

65 (92.9%)

39 (86.7%)

4687 (89.7%)

Alcohol consumption

.797

 < .001

 < .001

a-b**

a-c***

 Yes

126 (86.9%)

48 (69.6%)

27 (62.8%)

4526 (87.6%)

 No

19 (13.1%)

21 (30.4%)

16 (37.2%)

640 (12.4%)

Smoking everyday

 < .001

.210

.631

 Extremely/quite harmful

117 (79.6%)

58 (84.1%)

41 (91.1%)

4638 (88.9%)

 Not/slightly/moderately harmful

30 (20.4%)

11 (15.9%)

4 (8.9%)

582 (11.1%)

Smoking (e-cigarette) every day

 < .001

.411

.862

 Extremely/quite harmful

42 (30.4%)

26 (40.6%)

17 (47.2%)

2190 (45.8%)

 Not/slightly/moderately harmful

96 (69.6%)

38 (59.4%)

19 (52.8%)

2594 (54.2%)

Smoking (hashish/marijuana) every week

.034

.931

.205

a-c*

 Extremely/quite harmful

86 (59.3%)

45 (68.2%)

33 (76.7%)

3491 (67.7%)

 Not/slightly/moderately harmful

59 (40.7%)

21 (31.8%)

10 (23.3%)

1667 (32.3%)

Snuff use every week

.002

.277

.875

 Extremely/quite harmful

61 (41.5%)

33 (47.8%)

25 (55.6%)

2841 (54.4%)

 Not/slightly/moderately harmful

86 (58.5%)

36 (52.2%)

20 (44.4%)

2383 (45.6%)

Alcohol consumption every week

.693

.227

.063

b-c*

 Extremely/quite harmful

55 (37.9%)

22 (32.4%)

23 (53.5%)

2042 (39.6%)

 Not/slightly/moderately harmful

90 (62.1%)

46 (67.6%)

20 (46.5%)

3120 (60.4%)