Product mix and time since cessation among Korean former smokers using non-combusted nicotine products: a KNHANES analysis with implications for lung cancer risk comparisons
This KNHANES analysis reveals that Korean former smokers using non-combusted nicotine products are predominantly heated tobacco users who quit approximately a decade more recently than non-users, highlighting critical measurement gaps in product type and cessation duration that necessitate caution when interpreting lung cancer risk comparisons from NHIS cohort studies.