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KMID : 0384320090300010031
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Korean Journal of Family Medicine
2009 Volume.30 No. 1 p.31 ~ p.38
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Urine Cotinine and Environmental Tobacco Exposure in Korean Adolescents
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Lee Hae-Reung
Kim Hyeon-Keun
Yoo Jang-Suk
Kim Kyu-Nam
Lee Seon-Yeong
Yoo Sun-Mi
Kim Hyo-Bin
Kim Bong-Seong
Hong Soo-Jong
Kim Ja-Hyeong
Lee So-Yeon
Seong Moon-Woo
Lee Do-Hoon
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Abstract
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Background: The aim of this study was to elucidate the relationship of environmental tobacco smoke (ETS) exposure and the urine cotinine concentrations in Korean adolescents.
Methods: Study population was 1st grade adolescents (N=1467, girls 22.2%) recruited from four high schools, two from Seoul, one from Kangleung and one from Woolsan. We obtained information for active smoking and ETS exposure through self-reported questionnaire and urine cotinine concentrations.
Results: The prevalence of active smoking was 6.9% in boys and 0.9% in girls. Median urine cotinine concentrations were 19.5 ?g/L (range, 0-2341 ?g/L) among smokers, and 0 ?g/L (range, 0-1359 ?g/L) among nonsmokers. The positive rate of urine cotinine among nonsmokers exposed to ETS was 2.9%. Boys were exposed to ETS at PC room (79.6%), home (39.4%), school (11.5%), and public places (5.9%); girls were exposed at home (40.9%), PC room (33.2%), public places (28.0%), and school (15.2%). The frequency and duration of ETS exposure were significantly larger and longer in boys than in girls. Boys contacted friends who smoked more than girls did (32.6% vs. 17.1%). Parents’smoking status was similar both in boys and girls. Any information about ETS exposure did not differ according to the detectable urine cotinine among nonsmoking adolescents.
Conclusions: Low positive rateof urine cotinine and no association of urine cotinine with various ETS exposure history reflectthat urine cotinine may not a good marker for ETS exposure in Korean adolescents.
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KEYWORD
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Environmental tobacco smoke, Urine cotinine, Adolescent
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