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Table 1 Baseline patient characteristics

From: Brain metastasis development and poor survival associated with carcinoembryonic antigen (CEA) level in advanced non-small cell lung cancer: a prospective analysis

N = 293 Mean ± SE Patients
(%)
Age (years) 60.7 ± 0.7  
Gender   
   Female   44
   Male   56
Smoking History   
   Positive   53.9
   Negative   46.1
ECOG   
   1   45.4
   2   23.5
   3   31.1
Clinical Stage   
   III B   29.4
   IV   70.6
Histology   
   Adenocarcinoma   64.8
   *Other   35.2
Histological Grade   
   Low   10.3
   Moderate   35.9
   High   53.8
Metastasis at Diagnosis   
   CNS   18.6
   Liver   7.5
   **Other   44.9
First Line Treatment   
   Chemotherapy   87.4
   Tyrosine-kinase inhibitors   12.6
EGFR***   
   Positive   58.6
   Negative   41.4
HER2***   
   Positive   6.8
   Negative   93.2
  1. SE: Standard Error.
  2. ECOG: Eastern Oncology Cooperative Group Scale.
  3. *Other: Squamous, Giant Cells, Undifferentiated.
  4. CNS: Central Nervous System.
  5. **Other: Lymph Nodes, Bones, Contralateral Lung.
  6. EGFR: Epidermal Growth-Factor Receptor.
  7. ***: Tissue expression was determined only in 85 different
  8. primary tumor samples (see text).