From: COPD phenotype description using principal components analysis
COMPONENTS (% variance) Variables | Component Loadings | |||
---|---|---|---|---|
1 | 2 | 3 | 4 | |
(1) Component 1(20.2%) | ||||
Sputum IL8 | 0.79 | |||
Sputum neutrophil TCC | 0.72 | |||
Plasma TNFα | 0.76 | |||
(2) Component 2 (18.2%) | ||||
Sputum eosinophil % | 0.86 | |||
FeNO | 0.85 | |||
(3) Component 3 (15.1%) | ||||
FEV1 | 0.78 | |||
Bronchodilator Reversibility | 0.71 | |||
IC | 0.50 | |||
(4) Component 4 (11.4%) | ||||
CRP | 0.86 |