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Insights into Imaging

Table 1 Characteristics and demographics of the study participants

From: Optimization of pulmonary emphysema quantification on CT scans of COPD patients using hybrid iterative and post processing techniques: correlation with pulmonary function tests

Demographics

 Sex (male, %)

15 (65.2%)

 Age (mean in years, SD)

67.8 (± 9.9)

Anthropometry

 BMI (median in kg/m2, p25–p75)

27.7 (21.8–29.6)

Smoking

 Smoker/former smoker (yes, %)

15 (65.2%)

 Pack years (median, p25–p75)

20.0 (0.0–38.0)

 Packages weekly (median, p25–p75)

0.38 (0–0.78)

Pulmonary function

 GOLD stage (n, %)

  1

3 (13.0%)

  2

10 (43.5%)

  3

6 (26.1%)

  4

4 (17.4%)

 FEV1 (mean in L, SD)

1.57 (± 0.72)

 FEV1% pred (mean %, SD)

54.2 (± 22.5)

 FVC (mean in L, SD)

3.35 (± 1.12)

 FEV1/FVC (mean, SD)

0.47 (± 0.15)

Questionnaires

 MRCn = 21a

  0

3 (14.3%)

  1

8 (38.1%)

  2

1 (4.8%)

  3

5 (23.8%)

  4

4 (19.0%)

 CCQn = 21a

2.28 (± 1.09)

  1. BMI body mass index, pack years packs smoked per day × years as a smoker, packages weekly pack years/52, GOLD global initiative for chronic obstructive pulmonary disease, FEV1 forced expiratory volume in 1 s, FEV1% pred forced expiratory volume in the first second as percentage of predicted, FVC forced vital capacity, FEV1/FVC ratio of FEV1 divided by the forced vital capacity, MRC Medical Research Council dyspnea scale, CCQ Clinical COPD Questionnaire
  2. aTwo participants did not fill in the MRC and CCQ
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