5 cigarettes a day pack years Smoking history calculator – Ready to Screen What is a “Pack Year”?
What is a Pack Year? Lung Cancer Kilts Research Cures! Smoking a pack a day for a year causes 150 mutations in lung cells 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 Calculating Pack Years: How to measure how much you smoke Roswell Park Comprehensive Cancer Center Buffalo, NY
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