Table 3 The relationship between perception about the harm of smoking and other variables after exposure to graphic health warnings during the previous 30 days by South Korean boys and girls

 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

 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

 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

 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

 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

 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

 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