pack year

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Pack year
A pack year is a quantification of cigarette smoking.
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This article uses material from Wikipedia® and is licensed under the GNU Free Documentation License

NCI Dictionary of Cancer Terms Download this dictionary
pack year
A way to measure the amount a person has smoked over a long period of time. It is calculated by multiplying the number of packs of cigarettes smoked per day by the number of years the person has smoked. For example, 1 pack year is equal to smoking 1 pack per day for 1 year, or 2 packs per day for half a year, and so on.

A Service of the National Cancer Institute.

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| pack year in French