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    • Subcategory of 'Diagnosis' designed to be very sensitiveRule Out
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    Patent Pending

    Pack Years Calculator

    Calculates pack years in patients with any smoking history.
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    When to Use
    Why Use

    Patients who report any smoking history.

    • Standard clinical measure of quantifying smoking history.

    • Correlates with survival, particularly in patients with diagnosed lung cancer. In one study of patients with advanced lung cancer (stage IIIB/IV NSCLC), median overall survival was 10.8 months in patients with >15 pack year history, compared to 14.6 months in those with ≤15 pack year history (Janjigian 2010).

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    years

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    Evidence

    Advice

    According to clinical practice guidelines, adult patients ≥55 years with ≥30 pack year history of smoking are generally considered high risk for lung cancer and should undergo screening with low-dose CT (USPSTF, AAFP, NCCN, and others).