From: Serum metalloproteinase-9 is related to COPD severity and symptoms - cross-sectional data from a population based cohort-study
Non-COPD
COPD
Beta
P-value
Sex (female†)
0.021
0.534
−0.007
0.856
Age‡
−0.065
0.051
−0.075
0.071
Productive cough (no prc†)
−0.009
0.796
0.036
0.400
Pack years‡
0.088
0.010
0.095
0.027
FEV1% pred‡
−0.020
0.553
−0.084