Variable

Aging

% (n)

Young-adult

% (n)

p-value

Chest distension

80.0 (76)

80.0 (20)

0.022

Pulmonary vascular modification

52.6 (50)

48.0 (12)

0.001

Emphysema bubbles

49.5 (47)

9.0 (36)

0.230

Rail picture

58.9 (56)

68.0 (17)

0.009

Ring Image

4.2 (4)

8.0 (2)

0.439

Trachea in sheath

40.0 (38)

40.0 (10)

0.017

Expiratory trapping

7.4 (7)

4.0 (1)

0.473