During the World Congress on Lung Cancer held this year in Toronto, Canada were presented the findings of NELSON study. These demonstrate that the use of computed tomography (CT) screening among asymptomatic men at high risk for lung cancer led to a 26 percent (9-41%, 95% CI) reduction in lung cancer deaths at 10 years of study follow-up (at 86% compliance).
The NELSON study was a population-based, controlled trial that enrolled 15,792 individuals, who were randomized 1:1 to either the study arm or control arm. Study arm participants were offered CT screenings at baseline, one, three and five and one-half years after randomization. No screenings were offered to control arm participants.
More data and statistics can be found here: https://bit.ly/2OchPNy