Fig. 3: EFS in patients with stage III NSCLC by N2 or non-N2 status.
a–d, EFS from randomization in patients with N2 NSCLC (a), randomization in patients with non-N2 NSCLC (b), definitive surgery in patients with N2 NSCLC (c) and definitive surgery in patients with non-N2 NSCLC (d). Superscript letters ‘a’–‘d’ indicate the following 95% CIs: a, 58–78; b, 34–55; c, 60–84; d, 48–74. The HRs and the two-sided 95% CIs for comparisons of EFS between the treatment arms were estimated using an unstratified Cox proportional hazards model using the randomized arm as a single covariate. EFS rates at 1 year were estimated using Kaplan–Meier estimates on the EFS curve for each randomized arm.
