Effect of Second-Hand Smoke Exposure on Establishing Urinary Cotinine-Based Optimal Cut-Off Values for Smoking Status Classification in Korean Adults.

Int J Environ Res Public Health · 2022 · PMC9265992 · PMID 35805637

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showed a trendno p-value reported

A consecutive Korean National Health and Nutrition Examination Survey (KNHANES) between 2008 and 2018 showed a trend toward significant decreases in self-reported tobacco smoke exposure and measured urinary cotinine concentrations.

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a decreasing trendno p-value reported

A decreasing trend in urinary cotinine values in nonsmokers was clearly observed between the surveys.

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