Fig. 1From: Determinants of chronic obstructive pulmonary disease severity in the late-elderly differ from those in younger patientsComparisons of VC and FEV1 values between COPD patients aged <75 and ≥75 years with different grades of COPD. a VC, b %VC, c FEV1, d %FEV1. Gray columns <75 years old, Black columns ≥75 years old. Data are presented as mean ± standard deviation (SD). *p < 0.05Back to article page