From: Asthma in elderly is characterized by increased sputum neutrophils, lower airway caliber variability and air trapping
Spearman’s coefficient of rank correlation (rho)
95% CI for rho
p-value
FEV1/FVC
− 0.46
− 0.51 to − 0.41
< 0.0001
FEV1, % pred
− 0.47
− 0.53 to − 0.42
sGaw
− 0.41
− 0.47 to − 0.35
Asthma duration
0.16
0.08 to 0.23
0.0001