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Table 3 Tobacco use by 4 class membership

From: Preferences for different features of ENDS products by tobacco product use: a latent class analysis

 

TOTAL

CLASS 1

CLASS 2

CLASS 3

CLASS 4

 

n (%) or M ± SD

n (%) or M ± SD

n (%) or M ± SD

n (%) or M ± SD

n (%) or M ± SD

ENDS PRODUCT USE

N = 636

n = 169

n = 159

n = 147

n = 161

ENDS use, past 30 days

 

3, 4

 

1, 2

1

 No

235 (36.9)

80 (47.3)

69 (43.4)

45 (30.6)

41 (25.5)

 Yes

401 (63.1)

89 (52.7)

90 (56.6)

102 (69.4)

120 (74.5)

ENDS use, past 30 days with flavor(s)

 

2

1

.

.

 No flavor use

117 (18.4)

24 (14.2)

37 (23.3)

32 (21.8)

24 (14.9)

 Flavor use

284 (44.7)

65 (38.5)

53 (33.3)

70 (47.6)

96 (59.6)

 No ENDS use

235 (36.9)

80 (47.3)

69 (43.4)

45 (30.6)

41 (25.5)

Thinks will use ENDS in the next year

 

.

3

2

.

 Definitely or probably not

174 (27.4)

46 (27.2)

59 (37.1)

34 (23.1)

35 (21.7)

 Definitely or probably yes

462 (72.6)

123 (72.8)

100 (62.9)

113 (76.9)

126 (78.3)

Ever tobacco product use

 

4

.

.

1

 Has never tried any tobacco products other than ENDS

48 (7.5)

7 (4.1)

8 (5.0)

12 (8.2)

21 (13.0)

 Has tried at least one tobacco product other than ENDS

588 (92.5)

162 (95.9)

151 (95.0)

135 (91.8)

140 (87.0)

Tobacco cigarettes smoked per day

 

2, 4

1, 3

2, 4

1, 3

 0 cigarettes (former or never smoker)

221 (34.7)

50 (29.6)

56 (35.2)

41 (27.9)

74 (46.0)

 20 or fewer cigarettes per day

364 (57.3)

102 (60.3)

98 (61.6)

85 (57.9)

79 (49.1)

 21 or more cigarettes per day

51 (8.0)

17 (10.1)

5 (3.1)

21 (14.3)

8 (5.0)

TOBACCO PRODUCT USE, people with a history of use

N = 588

n = 162

n = 151

n = 135

n = 140

Age first started smoking

 

4

.

.

1

 < 14

58 (9.9)

14 (8.6)

20 (13.2)

12 (8.9)

12 (8.6)

 14–15

140 (22.0)

53 (32.7)

29 (19.2)

41 (30.4)

17 (12.1)

 16–17 years

223 (35.1)

57 (35.2)

62 (41.1)

57 (42.2)

47 (33.6)

 18–24 years

125 (19.7)

31 (19.1)

35 (23.2)

17 (12.6)

58 (30.0)

 25 years or older

42 (7.1)

7 (4.3)

5 (3.3)

8 (5.9)

22 (15.7)

Used both ENDS and at least one tobacco cigarette in the past 30 days

 

3

3

1, 2

 

 No

334 (56.8)

100 (59.2)

93 (61.6)

62 (45.9)

79 (56.4)

 Yes

254 (39.9)

62 (36.7)

58 (38.4)

73 (54.1)

61 (43.6)

CIGARETTE USE, current smokers

N = 415

n = 119

n = 103

n = 106

n = 87

Number of minutes to first cigarettes

 

2

1, 3

2

.

 <  5 min

64 (15.4)

20 (16.8)

11 (10.7)

20 (18.9)

13 (14.9)

 6–30 min

180 (43.4)

57 (47.9)

39 (37.9)

46 (43.4)

38 (43.7)

 31–60 min

62 (14.9)

17 (14.3)

10 (9.7)

16 (15.1)

19 (21.8)

 > 60 min

109 (26.3)

25 (21.0)

43 (41.7)

24 (22.6)

17 (19.5)

Ever tried to quit smoking in the past

 

2, 3, 4

1

1

1

 Yes, was successful

152 (36.6)

35 (29.4)

42 (40.8)

35 (33.0)

40 (46.0)

 Yes, was not successful

203 (48.9)

74 (62.2)

47 (45.6)

50 (47.2)

32 (36.8)

 No

60 (14.5)

10 (8.4)

14 (13.6)

21 (19.8)

15 (17.2)

  1. Note: Bolded numbers indicate significant difference between class (e.g., 1 indicates difference p < .05 compared with Class 1)