how to count cigarette pack years calculation Smoking history calculator – Ready Screen to Calculate Pack Years: – Pack year is calculated by

Pack year is calculated by the number of packs of cigarettes smoked per day (20 cigarettes in one pack) times the number of years of smoking. Calculating Smoking Pack Years Health BeatHealth Beat 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 Cigarette pack years among smokers (upper x axis shows percentiles) and Download Scientific Diagram

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