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Table 1 Demographic information for the never, former, and current smokers

From: Reversible and permanent effects of tobacco smoke exposure on airway epithelial gene expression

 

Never

Former

Current

n

21

31

52

Age

32.3 (10.7)

55.9 (14.7)

48.6 (15.2)

Pack years

 

34.0 (30.1)

34.5 (34.2)

Months since quitting

 

145.2 (162.82)

 
  1. The mean and standard deviation (in parentheses) are reported. There is a significant age difference between the groups (P < 0.05 for all two-way group comparisons by t-test).
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Genome Biology

ISSN: 1474-760X

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