Lung cancer is the most common cause of cancer death in the United States and throughout the world. Not all lung cancer is smoke related, however there is a direct correlation between the quantity you smoke and the occurrence of lung cancer. The Surgeon General's report on the consequences of smoking, reported in 1982, shows this correlation. Thus to assess the risk of lung cancer for a smoker, physician calculate a pack year history. A pack year history is essentially the magnitude of primary smoke exposure.
Determine the number of packs of cigarettes a person smokes per day.
Determine the number of total years the person has smoked.
Multiply the number of packs per day by the number of years they've smoked.
For example, if John Doe has smoked two packs per day for 30 years, his pack year history would be 60 pack years.
- "American Journal of Public Health". What are the odds that smoking will kill you? Mattson ME, Pollack ES, Cullen JW.1987;77(4):425.
- "Cancer Journal for Clinicians". Cancer statistics, 2010. Jemal A, Siegel R, Xu J, Ward E. 2010;60(5):277.
- A Report of the Surgeon General. The Health Consequences of Smoking: Cancer. DHHS (PHS) 82-50179. Washington, US Department of Health and Human Services, 1982.
- Photo Credit Jupiterimages/Photos.com/Getty Images
Gift Ideas for Adult Women 55 to 60 Years Old
Gifts are a way to show your love and appreciation for someone. Items, such as flowers and candy, may be considered impersonal....
Difference Between Correlation and Causality
Correlation suggests an association between two variables. Causality shows that one variable directly effects a change in the other. Although correlation may...
The Best Gifts for Active 60 Year Old Men
Many men in their 60s lead very active lives. If retired, they may use their free time to workout, explore their local...