title: Tolerance for and potential indicators of second-hand smoke exposure among nonsmokers: a comparison of self-reported and cotinine verified second-hand smoke exposure based on nationally representative data.
abstract: OBJECTIVE
  We assessed the extent to which self-reported exposure to SHS underestimates the actual exposure to SHS and what factors are associated with a tolerance for SHS exposure in the Korean setting where the smoke-free policy is incomplete.
  
  
  METHODS
  Information on socio-demographic characteristics, alcohol drinking and smoking was collected for 7948 nonsmokers aged ≥ 19 years from the fourth Korea National Health and Nutrition Examination Survey, 2008-2009. Self-reported and cotinine verified SHS exposures were compared. Potential factors associated with cotinine verified but not self-reported SHS exposures were assessed using a logistic regression model.
  
  
  RESULTS
  Self-reported SHS exposure significantly underestimated the actual SHS exposure as determined by cotinine verification (kappa coefficient: 0.1066). At younger age, frequent alcohol drinking in females and a longer smoking duration in males were positively associated with cotinine verified exposure but not with the self-reported SHS exposure; they were also positively associated with cotinine verified exposure irrespective of self-reported SHS exposure.
  
  
  CONCLUSIONS
  Our findings show a tolerance for smoking in Korea. The current partial ban on smoking does not fully protect people from exposure to SHS. Smoking should be banned in all public places. In addition, efforts to de-normalize smoking in the Korean culture need to be strengthened.
authors.affiliation: National Cancer Control Institute, National Cancer Center, Goyang, Republic of Korea.
authors.forename: Bo Yoon
authors.initials: BY
authors.lastname: Jeong
authors.affiliation: National Cancer Control Institute, National Cancer Center, Goyang, Republic of Korea; Graduate School of Cancer Science & Policy, National Cancer Center, Goyang, Republic of Korea. Electronic address: mickey@ncc.re.kr.
authors.forename: Min Kyung
authors.initials: MK
authors.lastname: Lim
authors.affiliation: National Cancer Control Institute, National Cancer Center, Goyang, Republic of Korea.
authors.forename: E Hwa
authors.initials: EH
authors.lastname: Yun
authors.affiliation: National Cancer Control Institute, National Cancer Center, Goyang, Republic of Korea.
authors.forename: Jin-Kyoung
authors.initials: JK
authors.lastname: Oh
authors.affiliation: National Cancer Control Institute, National Cancer Center, Goyang, Republic of Korea.
authors.forename: Eun Young
authors.initials: EY
authors.lastname: Park
authors.affiliation: National Cancer Center Hospital, National Cancer Center, Goyang, Republic of Korea.
authors.forename: Do-Hoon
authors.initials: DH
authors.lastname: Lee
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003367:Cotinine / Q000652:urine*; D004781:Environmental Exposure / Q000032:analysis* / Q000706:statistics & numerical data; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D009749:Nutrition Surveys; D056910:Republic of Korea; D057566:Self Report; D012907:Smoking; D012959:Socioeconomic Factors; D014028:Tobacco Smoke Pollution / Q000032:analysis* / Q000706:statistics & numerical data; D055815:Young Adult
chemical_list: D014028:Tobacco Smoke Pollution; D003367:Cotinine
keywords: Alcohol drinking; Former smokers; Second-hand smoke; Self-reported exposure; Urinary cotinine