|
Variable
|
Boys
|
Girls
|
|---|
|
N
|
(%)a
|
AORb
|
(95% CI)
|
n
|
(%)a
|
AORb
|
(95% CI)
|
|---|
|
Grade
|
|
7th grade
|
3242
|
(94.6)
|
3.96
|
(3.31–4.75)
|
3390
|
(94.0)
|
2.76
|
(2.32–3.30)
|
|
8th grade
|
3082
|
(88.3)
|
1.93
|
(1.67–2.23)
|
3356
|
(90.0)
|
1.77
|
(1.52–2.06)
|
|
9th grade
|
2899
|
(85.0)
|
1.63
|
(1.41–1.88)
|
3337
|
(89.0)
|
1.65
|
(1.43–1.90)
|
|
10th grade
|
2726
|
(78.0)
|
1.16
|
(1.02–1.31)
|
3165
|
(86.4)
|
1.42
|
(1.25–1.60)
|
|
11th grade
|
2773
|
(74.2)
|
1.10
|
(0.98–1.23)
|
3110
|
(83.1)
|
1.16
|
(1.02–1.31)
|
|
12th grade
|
2546
|
(70.6)
|
1.00
| |
2990
|
(80.2)
|
1.00
| |
|
Current smoking status
|
|
Smoker
|
1180
|
(47.7)
|
0.25
|
(0.23–0.28)
|
404
|
(52.4)
|
0.25
|
(0.21–0.30)
|
|
Non-Smoker
|
16,088
|
(85.6)
|
1.00
| |
18,944
|
(88.1)
|
1.00
| |
|
e-cigarette status
|
|
User
|
427
|
(49.7)
|
0.85
|
(0.72–0.99)
|
108
|
(52.1)
|
0.74
|
(0.53–1.05)
|
|
Non-User
|
16,841
|
(82.4)
|
1.00
| |
19,240
|
(87.1)
|
1.00
| |
|
Expose to Secondhand Smoke
|
|
Exposed
|
5317
|
(78.9)
|
0.97
|
(0.90–1.05)
|
6174
|
(85.4)
|
0.99
|
(0.90–1.09)
|
|
Non-exposed
|
11,951
|
(81.9)
|
1.00
| |
13,174
|
(87.4)
|
1.00
| |
|
Tobacco Advertise
|
|
Exposed
|
14,627
|
(81.6)
|
1.09
|
(0.98–1.22)
|
16,453
|
(87.3)
|
1.11
|
(0.99–1.24)
|
|
Non-exposed
|
2641
|
(77.6)
|
1.00
| |
2895
|
(83.8)
|
1.00
| |
|
Anti-Tobacco Advertisement
|
|
Exposed
|
15,057
|
(82.7)
|
1.48
|
(1.35–1.62)
|
17,699
|
(87.9)
|
1.85
|
(1.64–2.08)
|
|
Non-exposed
|
2211
|
(71.2)
|
1.00
| |
1649
|
(76.3)
|
1.00
| |
|
Experience of smoking prevention education in school
|
|
Yes
|
13,580
|
(82.9)
|
1.38
|
(1.26–1.50)
|
15,325
|
(87.8)
|
1.20
|
(1.10–1.32)
|
|
No
|
3688
|
(74.9)
|
1.00
| |
4023
|
(83.3)
|
1.00
| |
- AOR Adjusted odds ratio, CI Confidence interval
- aWeighted percentages considering the complex sample survey design
- bObtained from multinomial logistic regression analysis with control variables; Region, Family living structure, Perceived academic record, Perceived household economic status, Perceived stress, Depression experience, Current alcohol use
