5 cigarettes a day pack years Pack-years is way to measure a smoker's exposure to tobacco. Higher exposure means higher risk for lung cancer. beaumont.org/lung Tobacco Smoking and Risk of

Tobacco Smoking and Risk of Second Primary Lung Cancer Journal of Thoracic Oncology Calculating Pack Years for COPD Patients PDF Cigar Cigarette Don't let smoking sneak up on you! A simple calculation can tell you your pack year history. Here's how it works: number of packs per day X number of years smoking For Calculating Pack Years: How to measure how much you smoke Roswell Park Comprehensive Cancer Center Buffalo, NY

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