Table 1 Clinical and demographic features of patients
No. of Non-smokers Patients | Mean ± SD | No. of Patients with COPD | Mean ± SD | ||
|---|---|---|---|---|---|
Age, y | 11 | 64 ± 8 | 11 | 66 ± 9 | |
Sex, no. male/female | 5/6 | 8/3 | |||
Smoking status | |||||
Never smoked | 11 | 0 | |||
Former/Current | 0/0 | 4/7 | |||
Pack-years | 11 | 0 | 11 | 52.2 ± 32 | |
GOLD 0/1/2/3/4 | 11/0/0/0/0 | 0/3/8/0/0 | |||
FEV1/FVC, % | 11 | 77.2 ± 5 | 11 | 60.4 ± 9* | |
FEV1, % predicted value | 11 | 107.2 ± 10 | 11 | 73.2 ± 15* | |
VC, L | 11 | 3.5 ± 1 | 11 | 3.6 ± 1 | |