Table 3.

Multivariate analysis using Cox regression analysis

FactorHRLower CIHigher CI
Stage
    IAReference
    IB1.230.762.00
    II1.440.802.60
    III2.581.574.26
    IV4.202.507.04
Pack-year
    <40Reference
    40-601.110.791.56
    >601.000.721.39
Smoke cessation (y)
    0Reference
    0-71.170.821.67
    7-150.700.490.99
    >151.030.711.50
Cancer history
    NoneReference
    Family history1.070.811.42
    Personal history1.060.811.38
Resection
    CompleteReference
    Incomplete1.270.812.01
    No4.062.755.99
Gender
    FemaleReference
    Male1.311.021.68
Race
    CaucasianReference
    African American1.030.851.25
Age (y)
    <60Reference
    60-64.91.160.831.63
    65-71.91.050.761.46
    >721.280.881.85
Grade
    WellReference
    Moderate1.561.102.23
    Poor2.351.683.27
    BAC0.340.230.52
  • Abbreviation: BAC, bronchoalveolar carcinoma.