Figure 1From: Brain metastasis development and poor survival associated with carcinoembryonic antigen (CEA) level in advanced non-small cell lung cancer: a prospective analysis Independent factors associated with overall survival. RR (95% CI): Relative Risk (95% Confidence Interval). ECOG: Eastern Cooperative Ocology Group Scale. CS: Clinical Stage. CEA: Serum Carcinoembryonic Antigen Level. EGFR: Epidermal Growth-Factor Receptor.Back to article page