Comparing the Characteristics of Cigarette Smoking and e-Cigarette and IQOS Use among Adolescents in Taiwan
Table 3
Demographics of IQOS users and non-users among Taiwanese adolescents in 2018.
Characteristic
All (N = 1501527)
IQOS non-users (n = 1466516)
IQOS users (n = 35011)
Na
(%)b
95%
CI
(%)b
95%
CI
(%)b
95%
CI
Gender
‡
Boy
779780
52.03
51.95
52.11
51.64
51.56
51.72
68.96
68.89
69.03
Girl
718800
47.97
47.89
48.05
48.36
48.28
48.44
31.04
30.97
31.11
Grade
∗
7
214748
14.30
14.25
14.36
14.35
14.29
14.41
12.20
12.15
12.25
8
229647
15.29
15.24
15.35
15.36
15.30
15.42
12.56
12.51
12.61
9
241913
16.11
16.05
16.17
16.17
16.11
16.23
13.53
13.48
13.58
10
281736
18.76
18.70
18.83
18.69
18.63
18.75
21.65
21.58
21.72
11
277029
18.45
18.39
18.51
18.46
18.40
18.52
17.99
17.93
18.05
12
256453
17.08
17.02
17.14
16.96
16.90
17.02
22.07
22.00
22.14
Monthly allowance
‡
US$0
170113
11.38
11.32
11.43
11.40
11.35
11.45
10.49
10.44
10.54
US$0.03–49.71
744969
49.82
49.74
49.90
50.25
50.17
50.33
31.70
31.63
31.77
US$49.72–116.03
335925
22.46
22.40
22.53
22.47
22.40
22.54
22.24
22.17
22.31
US$ ≧ 116.04
244405
16.34
16.28
16.40
15.89
15.83
15.95
35.57
35.49
35.65
Parent educational level
‡
Junior high school and below
123637
8.93
8.89
8.98
8.80
8.75
8.85
14.36
14.30
14.42
Senior high school
543645
39.28
39.20
39.36
39.12
39.04
39.20
45.78
45.70
45.86
University or college
541726
39.14
39.06
39.22
39.39
39.31
39.47
28.51
28.43
28.59
Graduate school
175088
12.65
12.59
12.71
12.68
12.62
12.74
11.35
11.30
11.40
Smoking status of parents
‡
Both smoke
121901
8.29
8.25
8.34
8.08
8.04
8.12
17.72
17.66
17.78
Only the father smokes
480892
32.72
32.64
32.79
32.70
32.62
32.78
33.46
33.38
33.54
Only the mother smokes
29853
2.03
2.01
2.05
1.96
1.94
1.98
5.07
5.03
5.11
Neither smokes
837168
56.96
56.88
57.04
57.26
57.18
57.34
43.75
43.67
43.83
Smoking status of close friends
‡
Yes
633620
42.32
42.24
42.39
41.67
41.59
41.75
70.40
70.33
70.47
No
863766
57.68
57.61
57.76
58.33
58.25
58.41
29.60
29.53
29.67
Access to free cigarettes
‡
Yes
46068
3.11
3.08
3.14
2.82
2.79
2.85
16.75
16.69
16.81
No
1435773
96.89
96.86
96.92
97.18
97.15
97.21
83.25
83.19
83.31
Exposure to cigarette advertisements
‡
Yes
342874
22.92
22.85
22.99
22.74
22.67
22.81
30.94
30.87
31.01
No
1153174
77.08
77.01
77.15
77.25
77.18
77.32
69.06
68.99
69.13
Attended classes concerning the dangers of tobacco
Yes
707812
55.95
55.86
56.03
55.99
55.90
56.08
53.90
53.81
53.99
No
557325
44.05
43.97
44.14
44.01
43.92
44.10
46.10
46.01
46.19
aThe total numbers under each variable were not equal due to missing value(s).bSummed percentages in each column. P: Rao–Scott chi-square test was used to test the difference between independent variables and current use of IQOS. ∗ indicates < 0.05 and ‡ indicates < 0.001.
