Does South Korea have hidden female smokers: discrepancies in smoking rates between self-reports and urinary cotinine level.

BMC Womens Health · 2014 · PMC4319222 · PMID 25495192

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a decreasing trendno p-value reported

Although there are differences in the UCC smoking rate, the adjusted UCC smoking rate, the SRs + UCC smoking rate, and the adjusted SRs + UCC smoking rate, all of the biological marker indicators exhibit a decreasing trend in smoking.

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