how many cigarettes do people smoke a day on average you per day? What is a “Pack Year”?

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Research in Developmental Disabilities

(Cancer.gov) Example: 1 pack per day for 1 year = 1 pack-year 2 packs per day for 1 year = 2 pack-years 1 pack per day for 20 years = 20 pack-years This section can help answer medical-information search intent without turning the blog into a health article

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