Maryam Razavi

maryam.razavi@cambio.se

CambioCDS

To calculate pack-years in patients with any smoking history.

Use in patients who report any smoking history. Variables: Pack years = number of packs of cigarettes smoked per day x number of years the patient has smoked Note: 1 pack = 20 cigarettes. Interpretation: More pack years correlates with higher lung disease risk, including lung cancer. Consider screening with low-dose CT in patients ≥55 years with ≥30 pack-year history. Counsel patients on smoking cessation.

1. Moyer VA. Screening for lung cancer: U.S. Preventive Services Task Force recommendation statement. Ann Intern Med. 2014;160(5):330-8. 2. Wood DE, Kazerooni EA, Baum SL, et al. Lung Cancer Screening, Version 3.2018, NCCN Clinical Practice Guidelines in Oncology. J Natl Compr Canc Netw. 2018;16(4):412-441. 3. Janjigian YY, Mcdonnell K, Kris MG, et al. Pack-years of cigarette smoking as a prognostic factor in patients with stage IIIB/IV nonsmall cell lung cancer. Cancer. 2010;116(3):670-5.

OBSERVATION.pack_years_calculator.v0