Figure 2From: Survival analysis of patients with non-small cell lung cancer who underwent surgical resection following 4 lung cancer resection guidelines Kaplan-Meier curves of overall survival (OS) for time period 2001 to 2004 (more surgeons performed lymph node sampling) (blue line) and 2005 to 2008 (more surgeons performed complete resection) (green line) (+indicates censored cases). P < 0.001 indicates OS was significantly different between the 2 periods.Back to article page