cigarettes small pack Ever Wondered How Many Are in a Pack? Find Out Here! Packs of cigarettes hi-res stock

Thank you NHS & CancerResearchUK

And many pipe smokers do inhale, whether intentionally or not

Respondents were first asked, Have you smoked at least 100 cigarettes in your entire life? If a respondent answered yes, he or she was then asked, Do you now smoke cigarettes every day, some days or not at all? We used the responses to these two questions to classify respondents into three groups: nonsmokers (those who answer no to the first question or not at all to the second question), nondaily current smokers (those who answer some days to the second question), and daily current smokers (those who answer every day to the second question)

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