우리나라 성인 중 비흡연자에 대한 코티닌 노출수준 및 영향요인 분석 - 국민환경보건 기초조사(2009-2017) 결과 -

Urinary Exposure Levels of Cotinine and Influence Factors among Non-smokers in Korean Adults - Korean National Environmental Health Survey (2009-2017) -

Objectives: The aim of this study is to identify temporal trends in urinary cotinine levels and exposure factors among Non-smokers in Korean adults. Methods: Biological samples and questionnaire data were collected from representative Korean adults recruited in the Korean National Environmental Health Survey from 2009 to 2017. Multiple regression analysis was performed to determine the factors affecting urinary cotinine concentrations of non-smokers. Results: The urinary cotinine levels of Korean non-smokers decreased in Cycle 2 (1.04 µg/L, 2012-2014) compared to Cycle 1 (1.93 µg/L, 2009-2011) but increased slightly in Cycle 3 (1.37 µg/L, 2015-2017). Among the diverse variables, the main factors of cotinine exposure were secondhand smoke exposure and the presence of smokers in the family. Conclusions: The results of this study identified temporal trends in cotinine exposure among non-smokers in the Korean adult population. These findings will be used to develop further assessment and environmental health policies on secondhand smoke exposure.