G1

G2

(n = 29)

(n = 32)

p

Age, mean standard deviation

67.8 ± 8.6

69.6 ± 11.1

-0.470

Smoking(PA)   standard deviation

41.5 ± 19.2

41.6 ± 17.0

-0.992

Number of standard deviation comorbidities

1.5 ± 1.1

0.9 ± 0.9

0.016

Corticosteroid treatment

14

10

0.199

Presence of emphysema

18

28

-0.036

Dyspnea evaluation according to MMRC standard deviation

1.5 ± 0.7

1.8 ± 0.9

-0.273

TM6 (m)   standard deviation

501.9 ± 107.9

441.5 ± 141.7

0.070