Table 1

Clinical features of patients with non–small cell lung cancer and controls
Variables Patients (N = 150) Controls (n = 150) P value
Age
  Mean (SD), yr 64.2 ± 15.1 62.1 ± 14.3
  < 50 yr 15 18
  50-70 yr 85 83
  > 70 yr 50 49 >0.05
Sex
  Male 81 77
  Female 69 73 >0.05

N: number; SD: Standard Deviation.

Dong et al.

Dong et al. Diagnostic Pathology 2014 9:52   doi:10.1186/1746-1596-9-52

Open Data