Figure 1.

LHC attendees who were ineligible at baseline by differing criteria (A–C), stratified by baseline risk score and smoking status. Percentages describe the proportion of participants in each risk stratum in each smoking status group who become eligible at each time point. (A) Becoming eligible by PLCO_m2012. (B) Becoming eligible by LLP_v2. No participants with baseline LLP_v2<0.5 became eligible during a 20-year programme. (C) Becoming eligible by either PLCO_m2012 or LLP_v2, stratified by baseline PLCO_m2012. LHC, Lung Health Check; LLP_v2, Liverpool Lung Project version 2; PLCO_m2012, Prostate, Lung, Colorectal and Ovarian trial’s risk model 2012.