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Table 3 Airway dimensions by GOLD stage

From: Airway wall thickness is increased in COPD patients with bronchodilator responsiveness

GOLD

Variable

BDR-(10%)

BDR + (10%)

p

1

 

n = 519

n = 143

 

Pi10

3.62 ± 0.10

3.64 ± 0.12

.016

Pi15

5.08 ± 0.15

5.14 ± 0.19

<.0001

WA%, Seg

60.04 ± 2.66

61.32 ± 2.99

<.0001

2

 

n = 1029

n = 564

 

Pi10

3.68 ± 0.12

3.71 ± 0.15

<.0001

Pi15

5.19 ± 0.21

5.23 ± 0.21

<.0001

WA%, Seg

62.06 ± 3.01

62.90 ± 2.90

<.0001

3

 

n = 501

n = 425

 

Pi10

3.74 ± 0.14

3.75 ± 0.15

.289

Pi15

5.22 ± 0.22

5.27 ± 0.21

.001

WA%, Seg

63.04 ± 3.02

63.64 ± 2.81

.002

4

 

n = 506

n = 174

 

Pi10

3.75 ± 0.14

3.78 ± 0.13

.031

Pi15

5.19 ± 0.20

5.24 ± 0.21

.004

WA%, Seg

63.20 ± 3.01

64.02 ± 2.60

.003