Table 1.

Characteristics of Patients Providing HRCT Scan Data

Parameter	Patients (N=20)
Male, n (%)	15 (75.0)
Age, years	64.0±7.68 (44–77)
Height, cm	168.9±8.40 (158–188)
Smoking history, pack-years	51.3±29.5 (25–110)
Post-bronchodilator FEV1 predicted	42.3±14.8 (19.3–66.0)
50–80%, n (%)	7 (35.0)
30–50%, n (%)	8 (40.0)
<30%, n (%)	5 (25.0)
Post-bronchodilator FEV1 to FVC ratio	0.41±0.14 (0.17–0.62)

Note: Data are mean±SD (range) unless specified otherwise.

Abbreviations: FEV₁, forced expiratory volume in 1 sec; FVC, forced vital capacity.