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Q
Pack-Year History to Quantify Tobacco Use
A
Number of packs-per-day (PPD) x the number of years smoked.
ex: 2 PPD x 30 years= 60pk-y-hx
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Pack-Year History to Quantify Tobacco Use
Number of packs-per-day (PPD) x the number of years smoked.
ex: 2 PPD x 30 years= 60pk-y-hx