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Table 3 Trends in the ease of cigarette purchase, 2005–2016

From: Trends in the ease of cigarette purchase among Korean adolescents: evidence from the Korea youth risk behavior web-based survey 2005–2016

Year

Ease of cigarette purchase

Yes

No

Model 1a

Model 2b

N (%)

N (%)

OR

95% CI

OR

95% CI

2005

4851 (83.9%)

860 (16.1%)

1.00

1.00

2006

6898 (86.5%)

1059 (13.5%)

1.22

1.08–1.38

1.00

0.88–1.13

2007

9021 (84.1%)

1722 (15.9%)

1.01

0.90–1.14

0.90

0.80–1.01

2008

8657 (81.3%)

2013 (18.7%)

0.83

0.74–0.93

0.71

0.64–0.80

2009

7829 (80.5%)

1982 (19.5%)

0.79

0.70–0.89

0.66

0.59–0.74

2010

7552 (80.9%)

1777 (19.1%)

0.81

0.72–0.92

0.69

0.61–0.77

2011

7415 (81.0%)

1787 (19.0%)

0.82

0.73–0.92

0.68

0.61–0.76

2012

6748 (80.9%)

1617 (19.1%)

0.81

0.72–0.91

0.65

0.58–0.72

2013

5644 (76.5%)

1791 (23.5%)

0.62

0.55–0.70

0.47

0.42–0.53

2014

4957 (76.9%)

1568 (23.1%)

0.64

0.57–0.72

0.46

0.41–0.52

2015

4028 (79.3%)

1074 (20.7%)

0.73

0.65–0.83

0.50

0.44–0.57

2016

3260 (71.4%)

1381 (28.6%)

0.48

0.42–0.54

0.32

0.28–0.36

  1. aModel 1: Crude analysis
  2. bModel 2: Adjusted for sex, grade, area, and self-reported socioeconomic status