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Table 1 Demographics and clinical characteristics

From: Cancer-testis gene expression is associated with the methylenetetrahydrofolate reductase 677 C>T polymorphism in non-small cell lung carcinoma

  CT (+) patients (n=21) CT (-) patients (n=29) P*
Age >60 12 19 0.74
<=60 6 7
Unknown$ 3 3  
Sex Male 10 12 0.76
Female 8 14
Unknown 3 3  
Smoking history No 1 5 0.37
Yes 15 18
Unknown 5 6  
Histology SQCC# 8 2 0.002
non-SQCC 7 24
Unknown 6 3  
Pathological tumor size >3 cm 10 8 0.21
<=3 cm 8 17
Unknown 3 4  
T stage 1 5 14 0.007
2 8 12
3 3 0
4 2 0
Unknown 3 3  
TNM stage (Pathologic stage of primary tumor) I 9 18 0.37
II 5 3
III 4 5
IV 0 0
  Unknown 3 3  
  1. * Chi-square (Fisher's exact test, two sided) or chi-square test for trend; # SQCC Squamous cell carcinoma; $patients with missing clinical data were not included in statistical analyses.