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smoked 1 pack of cigarrettes a day for last 50 yrs.
Actually it's a little more complicated than what is answered above. Pack-years are calculated by multiplying the number of packs of cigarettes smoked per day by the number of years the person has smoked.
A pack-year is smoking 20 cigarettes a day for one year. If someone has smoked 10 cigarettes a day for 6 years, they would have a 3-pack-year history. Someone who has smoked 40 cigarettes daily for 20 years has a 40-pack-year history.
So it is actually possible for someone to have a pack-year history that is larger than their actual age.
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∙ 14y ago
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What is a 150 pack year history?
Smoking X cigarettes per day for Y years to equal 150. For example, smoking three packs per day for 50 years, or ten packs per day for fifteen years would each yield a 150-pack-year smoking history.
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It's simple. Imagine you import bikes from China. You pay a manufacturer $200 a piece (let's say you buy many bikes at once), than you pay more $50 a piece for shipment, more $50 at customs, more $10 for storage and more $15 for delivery from warehouse to your store. Now, if you can sell a piece for more than 200+50+50+10+15=$325 - it will be economically justified (theoretically)
What is the correct way to express the phrase '50-pack-year' as it relates to length of a patient's smoking history on a medical report?
50 pack-year history is correct. 50-pack-year history is actually correct according to the American Association of Medical Transcription guidelines. According to Vera Pyle's Current Medical Terminology 11th Edition, as well as the AAMT guidelines, the 2nd answer submitted as above is correct - It should be written as, for example: "The patient has a 50-pack-year history of smoking."
What is a 150 pack year history?
Smoking X cigarettes per day for Y years to equal 150. For example, smoking three packs per day for 50 years, or ten packs per day for fifteen years would each yield a 150-pack-year smoking history.
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