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While cigarettes popularity has steadily declined since the 1960s, their use remains high in certain populations, including those with low incomes and living in rural areas, according to the study

Additional information Competing interests We have no financial or non-financial competing interests

Strengths and limitations The strengths of this study are that we performed anxiety screening of adolescents using the validated GAD-7 tool and that the findings can be generalized to all South Korean adolescents because nationally representative data were used

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