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Table 1 Baseline characteristics of the study participants

From: Circulating surfactant protein D as a potential lung-specific biomarker of health outcomes in COPD: a pilot study

 

Mean ± SD

Number

23

Age (year)

64.8 ± 10.6

Men (%)

11 (47.8%)

Body mass index (kg/m2)

27.7 ± 6.6

FEV1 (L)

0.84 ± 0.32

FEV1 (% predicted)

30.8 ± 14.8

PaO2 (mmHg)

58.6 ± 10.0

PaCO2 (mmHg)

44.5 ± 9.8

CRQ score

4.1 ± 1.1

   Dyspnea

3.0 ± 1.0

   Fatigue

3.5 ± 1.3

   Emotion

4.9 ± 1.3

   Mastery

4.5 ± 1.4

Six-minute walk test (m)

286.0 ± 123.6

SPD (ng/mL)*

74.7 (49.2–128.7)

CC16 (μg/L)*

4.6 (3.8–8.7)

CRP (mg/L)*

3.5 (1.1–9.8)

  1. * Median and interquartile range.
  2. Abbreviations: CC16 – Clara cell protein, CRP – C-reactive protein, SPD – Lung surfactant protein D, FEV1 – forced expiratory volume in one second.
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BMC Pulmonary Medicine

ISSN: 1471-2466

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