5 cigarettes a day pack years Pack-Year Smoking History: How to Calculate It Clinically Pack years are a unit
Pack years are a unit of measurement used to estimate the amount a person has smoked over their lifetime. It is calculated by multiplying the number of packs of cigarettes smoked per Was a 3 pack a day smoker. As of today I am a year smoke free : r MadeMeSmile What is the packyear smoking history for a patient who smoked one pack per day from age 14 to age 45? Tobacco Smoking and Risk of Second Primary Lung Cancer ScienceDirect
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