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Table 1

Characteristics of the study population

Casea (n = 265)Controlsa (n = 185)
Age (yr) 61.3 ± 8.9 60.4 ± 9.9 
Sex   
 Male 219 (82.6) 150 (81.1) 
 Female 46 (17.4) 35 (18.9) 
Smoking status   
 Currentb 205 (77.3) 100 (54.1) 
 Formerb 14 (5.3) 37 (20.0) 
 Never 46 (17.4) 48 (25.9) 
Pack-yearsc 40.8 ± 21.5 34.8 ± 15.6 
Former smokers   
 Years of cessation 6.4 ± 8.9 6.1 ± 4.8 
Casea (n = 265)Controlsa (n = 185)
Age (yr) 61.3 ± 8.9 60.4 ± 9.9 
Sex   
 Male 219 (82.6) 150 (81.1) 
 Female 46 (17.4) 35 (18.9) 
Smoking status   
 Currentb 205 (77.3) 100 (54.1) 
 Formerb 14 (5.3) 37 (20.0) 
 Never 46 (17.4) 48 (25.9) 
Pack-yearsc 40.8 ± 21.5 34.8 ± 15.6 
Former smokers   
 Years of cessation 6.4 ± 8.9 6.1 ± 4.8 
a

Numbers in parentheses, percentage.

b

In current and former smokers, P = 0.001.

c

In current and former smokers, P = 0.003.

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