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Table 4 The CT intra-luminal diameters at selected levels of all the included cases (N = 50)

From: Clinical, physiological, and radiological different phenotypes of COPD patients

CT inter-lumen diameter (mm)

Patients with COPD with CT scan data (n = 50), (mean ± SD)

P value¥

Mild CLE

(n = 29

Moderate CLE (n = 8)

CON

(n = 5)

ADE

(n = 5)

PSE

(n = 3)

Insp-RB1

7.87 ± 1.21

8.33 ± 1.15

6.29 ± 1.21

7.60 ± 1.57

7.66 ± 0.61

0.044

Insp-RB10

4.42 ± 0.86

4.64 ± 1.00

4.12 ± 0.69

3.86 ± 0.58

4.07 ± 0.65

0.484

Insp-LB3

3.41 ± 0.61

3.35 ± 0.69

3.33 ± 0.48

3.02 ± 0.90

3.26 ± 0.48

0.784

Exp-RB1

6.60 ± 1.43

6.87 ± 1.27

6.96 ± 1.73

7.11 ± 1.06

7.32 ± 1.69

0.046

Exp-RB10

3.28 ± 0.90

3.11 ± 0.86

3.54 ± 1.34

3.22 ± 0.68

3.46 ± 1.19

0.944

EXP-LB3

2.22 ± 0.52

1.91 ± 0.45

2.09 ± 0.77

1.93 ± 0.66

2.93 ± 0.25

0.043

  1. Row percent was used ¥ ANOVA test. Continues data represented as mean, SD; SD standard deviation, RB1 apical bronchus of the right upper lobe, RB10 the posterior basal bronchus of the right lower lobe, LB3 the anterior bronchus of the left upper lobe, CLE centrilobular emphysema; ADE advanced destructive emphysema, CON confluent emphysema, PSE paraseptal emphysema