how many cigarettes are smoked a year What is “Pack Year”? — Lung Cancer Kilts Research Cures! Pack-years is a way to
Pack years is a way to measure a smoker's exposure to tobacco. Higher exposure means higher risk for lung cancer. beaumont.org lung Don't let smoking sneak up on you! A simple calculation can tell you your pack year history., Heres how it works:, number of packs per day X number of years smoking, For example, if you smoke one Smoking The rise and fall of American smoking
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