2 packs of cigarettes a day for 20 years PACK — THAYER Both Duration and Pack-Years of
Both Duration and Pack Years of Tobacco Smoking Should Be Used for Clinical Practice and Research PMC Those aged 50 80 years with a history of 20+ pack years of smoking are now considered high risk for lung cancer, as per the updated USPSTF guidelines. This broadened criterion has increased the I smoked 20 30 cigarettes a day. And more than 2 packs while drinking alcohol! Allen Carr's Easyway How Many Cigarettes Do You Need to Smoke to Get Cancer? Pack Year Smoking History: An Inadequate and Biased Measure to Determine Lung Cancer Screening Eligibility PMC 20 years of heavy smoking : r stopsmoking
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