The landscape of lung cancer screening globally: a comparison of established programs and estimates of eligibility to participate

Comparing lung cancer screening programs worldwide provides insight into the most utilised screening approaches and variations in program eligibility. This study compared the eligibility criteria and parameters for lung cancer screening programs internationally and modelled the reach of each program. Eleven countries with implemented, organised, national or regional lung cancer screening programs were identified; eight (73%) utilised pack-years to measure smoking intensity, with four countries adopting 30-pack-years as a requirement. Three programs (27%) utilised risk prediction models to determine eligibility. Proportions of eligible people who currently smoke range from 10.7% to 27.8%, with the fewest in the Republic of Korea (10.7%) and most in the United States (27.8%). Globally, lung cancer screening eligibility criteria and program parameters vary substantially. There was limited consideration for engaging key population groups. Ensuring programs incorporate relevant local strategies to maximise participation across at-risk groups is essential, especially for those underrepresented in screening programs.