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Table 1 Socio-demographic and clinical characteristics of 337 patients with COPD.

From: Factors affecting the relationship between psychological status and quality of life in COPD patients

 

n = 337*

Males, n (%)

314 (93.2)

Age (years), m (SD)

67.9 (8.6)

Married, n (%)

272 (80.7)

Less than primary education, n (%)

139 (41.2)

Low socioeconomic status (IV-V)†, n (%)

255 (81.5)

Current workers, n (%)

55 (16.3)

Smoking status, n (%)

 

   Current smoker

108 (32.8)

   Former smoker

219 (66.6)

   Never smoked

2 (0.6)

FEV1 post-bronchodilator (% pred.), m (SD)

52.4 (16.2)

MMRC dyspnea scale, median (P25-P75)

2 (2-3)

RV/TLC (%), m (SD)

55.6 (10.1)

DLco (% pred.), m (SD)

65.2 (20.8)

PaO2 (mmHg), m (SD)

74.3 (10.7)

PaCO2 (mmHg), m (SD)

41.8 (5.3)

6MWD (m), median (P25-P75)

440.0 (390.0-508.4)

BMI (Kg/m2), m (SD)

28.2 (4.7)

Comorbidities: Charlson index ≥2+, n (%)

187 (55.8)

Any respiratory drug treatment, n (%)

288 (85.5)

Long-term oxygen therapy, n (%)

27 (8.2)

  1. COPD, chronic obstructive pulmonary disease; FEV1, forced expiratory volume in one second; MMRC, Modified Medical Research Council; RV/TLC, residual volume/total lung capacity; DLco, diffusing capacity for carbon monoxide; PaO2, partial pressure of oxygen in arterial blood; PaCO2, partial pressure of carbon dioxide in arterial blood; 6MWD, 6-minute walking distance; BMI, body mass index.
  2. * Some variables had missing values: 24 in socioeconomic status, 8 in smoking status, 26 in RV/TLC, 46 in DLco, 11 in PaO2, 10 in PaCO2, 30 in 6MWD, 2 in Charlson comorbidities and 8 in long-term oxygen therapy.
  3. + One: only COPD; two or more: one or more comorbidities in addition to COPD.
  4. †According to International Standard Classification of Occupations (ISCO).
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Health and Quality of Life Outcomes

ISSN: 1477-7525

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