Table 1

Self-reported and cotinine-verified smoking status in men and women aged ≥20 years in the 2008 Korea National Health and Nutrition Examination Survey

Total (number, %)Cotinine-verified smoking status
Non-smokers (number, %)Smokers (number, %)
Self-reported smoking status
 Men
  Total2387 (100.0)1193 (100.0)1194 (100.0)
  Never-smokers497 (20.8)449 (37.6)48 (4.0)
  Ex-smokers822 (34.4)726 (60.9)96 (8.0)
  Smokers1068 (44.7)18 (1.5)1050 (87.9)
 Women
  Total3068 (100.0)2642 (100.0)426 (100.0)
  Never-smokers2765 (90.1)2534 (95.9)231 (54.2)
  Ex-smokers122 (4.0)102 (3.9)20 (4.7)
  Smokers181 (5.9)6 (0.2)175 (41.1)
Secondhand smoking exposure
 Men
  No1164 (100.0)669 (57.5)495 (42.5)
  <1 h/day778 (100.0)390 (50.1)388 (49.9)
  ≥1 h/day393 (100.0)115 (29.3)278 (70.7)
  Unknown52 (100.0)19 (36.5)33 (63.5)
 Women
  No1920 (100.0)1756 (91.5)164 (8.5)
  <1 h/day605 (100.0)491 (81.2)114 (18.8)
  ≥1 h/day460 (100.0)325 (70.7)135 (29.4)
  Unknown83 (100.0)70 (84.3)13 (15.7)