Table 3

Characteristics of PI MZ and PI MM subjects in the Norway Case–Control Study

PI MZPI MMp Value
No of subjects781591
Mean (SD) age (years)62 (10)60 (11)0.33
Female, n (%)43 (55)875 (55)0.97
Median (IQR) pack-years of smoking25 (16–31)22 (13–34)0.24
Median (IQR) FEV1 (% predicted)72 (46–95)81 (54–94)0.38
  • FEV1, forced expiratory volume in 1 s.