Table 5—

Characteristics of clusters of subjects with full data set# defined by the diana method

Cluster
1234
Subjects n111011242
Pre-BD FEV1/FVC %49.8±6.856.6±10.968.3±8.170.3±8.6
Pre-BD FEV1 % pred52.3±13.557.2±20.384.7±15.980.4±14.8
Reversibility %21.0±16.28.3±7.07.5±7.38.7±8.2
DL,CO/VA+ % pred74.5±12.474.6±15.499.7±12.996.5±14.0
FRC % pred145.2±20.2125.7±39.5104.7±19.9101.3±18.6
Log IgE g·L−15.6±1.43.1±1.14.4±1.44.1±1.7
FeNO ppb37.3±40.221.0±10.935.3±26.130.6±23.3
Sputum production n (%)11 (100)0 (0)0 (0)42 (100)
Smoking history pack-yrs34.8±26.450.5±28.75.0±9.710.6±14.1
  • Data are presented as mean±sd, unless otherwise indicated. BD: bronchodilator; FEV1: forced expiratory volume in 1 s; FVC: forced vital capacity; % pred: % predicted; DL,CO: diffusing capacity of the lung for carbon monoxide; VA: alveolar volume; FRC: functional residual capacity; Ig: immunoglobulin; FeNO: exhaled nitric oxide fraction. #: n = 175; : listed in order of pre-BD FEV1/FVC; +: adjusted for haemoglobin concentration.