Table 2

DRC (%) for cases and controls by selected subgroups

SubgroupCasesControls
nMeanSDPnMeanSDP
Age (years)
 ≤634097.692.70Ref3608.553.85Ref.
 >633558.002.940.0963179.053.880.091
Gender
 Female3627.462.78Ref.3218.483.50Ref.
 Male4028.152.82<0.0013569.064.160.047
Smoking Status
 Never977.262.45Ref.898.433.29Ref.
 Former3517.852.750.0543528.683.740.563
 Current3167.962.980.0212369.084.230.142
Pack-years
 ≤422687.732.72Ref.3088.523.59Ref.
 >423998.022.950.2042809.204.280.040