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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