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Table 4 Cox regression analyses for OS and LCSS in T1b and T1c NCSLC patients who underwent Lobectomy or Lobectomy with MLND between 2003 and 2013

From: Time trend of mediastinal lymph node dissection in stage IA non-small cell lung cancer patient who undergo lobectomy: a retrospective study of surveillance, epidemiology, and end results (SEER) database

variables OS LCSS
p Exp(B) 95.0% CI for Exp(B) P Exp(B) 95.0% CI for Exp(B)
Lower Upper Lower Upper
Age 0.01 1.042 1.037 1.047 0.01 1.03 1.02 1.04
Sex 0.01 0.729 0.671 0.793 0.01 0.76 0.68 0.85
Year of diagnosis 0.01 0.786 0.709 0.871 0.01 0.73 0.64 0.84
Histology 0.01 0.758 0.695 0.828
Grade 0.01 1.132 1.076 1.191 0.01 1.20 1.12 1.28
  1. OS overall survival LCSS lung cancer specific survival
  2. HR hazard ratio CI confidence interval