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Table 1 Patient demographic characteristics

From: Blood cell for the differentiation of airway inflammatory phenotypes in COPD exacerbations

ParametersAll patients (N = 287)
Mean age, years75(68–80)
Males, n (%)182(63.41)
BMI, kg/m 220.7(18.3–23.42)
FVC (L)2.11 (1.66–2.68)
FEV1(L)0.99 (0.68–1.44)
FEV1% predicted46.8 (31–63.85)
FEV1/FVC (%)49.8 (39.12–58.9)
Smokers, n (%)156(54.36)
Sputum eosinophils %1(0–2.79)
Sputum neutrophils %92.56(82.35–96.11)
Sputum lymphocytes %1.5(0.5–3)
Sputum macrophages %2.22(0.83–8.17)
  1. Note: N refers to the total population; n refers to the sub-group population; BMI Body mass index, FVC Forced vital capacity, FEV1 Forced expiratory volume in 1 s;
  2. Values are expressed as median (inter-quartile range)