Table 1—

Characteristics of patients with available data

Patients nData
Age yrs78072.5±11.8
Male sex78470.0
Pre-hospital care79421.5
Current/ex-smokers73430.8/ 49.9
Cumulative tobacco smoking pack-yrs73446.4±30.0
Occupational exposure to gas, fumes, dusts72128.3
Known COPD#72184.6
Age at beginning of exertional dyspnoea yrs65253.3±17.8
Baseline dyspnoea grade701
Previous lung function test74869.9
Usual follow-up763
 Respiratory physician40.8
 General practitioner34.3
Usual maintenance treatment767
 Anticholinergic agents37.5
 Inhaled corticosteroids43.8
 Oral corticosteroids13.8
 Long-term oxygen therapy23.2
  • Data are presented as mean±sd or percentage. Total number of recruited patients, n = 794. COPD: chronic obstructive pulmonary disease. #: including chronic bronchitis and emphysema.