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Table 1 Demographic characteristics of the study population

From: A lung cancer risk classifier comprising genome maintenance genes measured in normal bronchial epithelial cells

  Non-cancer ( n = 57) a Cancer ( n = 58) a p -value b
Age, yr 59.3 (±14.2) 64.4 (±9.5) 0.022
Gender    0.021
 Male 28 40  
 Female 29 16  
Smoking history    0.035
 Current 23 12  
 Former 27 37  
 Never 0 1  
Pack-Years 43 (±28.7) 53 (±31.3) 0.072
Ethnicity
 White 45 46  
 AA 9 4  
 Other 1 1  
  1. aMissing data: age (n = 2), gender (n = 2), smoking history (n = 15), ethnicity (n = 9). b p-values were calculated using a Student’s t-test for age and pack-years, and Fisher exact test for gender and smoking history. AA: African American.