Table 1 Summary of the COPDGene patient subset used in this study.

From: Quantifying the spatial clustering characteristics of radiographic emphysema explains variability in pulmonary function

 

Mean or count

SD or %

Sex

 Male

301

51%

 Female

286

49%

Cur.Smoker

 No

440

75%

 Yes

147

25%

Age

 

63.5

8.6

BMI

 

28.3

5.6

FEV\(_1\)

 

2.02

1.03

FVC

 

3.34

1.02

FEV\(_1\)-FVC Ratio

 

0.59

0.20

6-min Walk Dist.

 

1461

375

SGRQ Score (Total)

 

27.9

23.1

FRC

 

3.58

1.22

FRC-TLC Ratio

 

0.57

0.11

GOLD Stage

 PRISm

10

2%

 0

236

40%

 1

7

1%

 2

140

24%

 3

123

21%

 4

71

12%

  1. FEV\(_1\) forced expiratory volume in one second, FVC forced vital capacity, 6MWD 6-minute walk distance, FRC functional residual capacity, TLC total lung capacity, GT gas trapping.
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