Table 1 Characteristics of the entire cohort and of the PS-matched cohort at baseline

Group A

Group B

Difference

Group B – Group A

Group A

Group B

Difference

Group B – Group A

n

77

40

40

40

Males (n)

(%)

26

(33.8%)

15

(37.5%)

−11

(−3.80%)

15

(37.5%)

15

(37.5%)

0

Mean Age (years)

(±s.e.)

51.87

(±1.60)

50.2

(±2.43)

−1.69

49.40

(±2.05)

50.2

(±2.43)

0.78

Mean FEV₁% predicted

(±s.e.)

82.2

(±1.14)

81.9

(±2.00)

−0.30

82.40

(±1.6)

81.9

(±2.00)

−0.47

Comorbidities

(% of patients)

37.7%

42.5%

−4.80%

42.5%

42.5%

0%