Table 5 Table of results of the multivariate analyses performed to determine the independent associations between the variables
From: COPD phenotype description using principal components analysis
Independent Predictor | Dependent Variable | ||||||
|---|---|---|---|---|---|---|---|
FeNO | Sputum TCC | Sputum Neutrophil TCC | Sputum Neutrophil % | Sputum Eosinophil TCC | Sputum Eosinophil % | Sputum IL8 | |
FeNO | N/A | NS | NS | P < 0.0001 R = -0.6 | P < 0.0001 R = 0.7 | P < 0.0001 R = 0.62 | NS |
Sputum IL8 | NS | NS | P = 0.002 R = 0.57 | P < 0.0001 R = -0.6 | NS | NS | N/A |
Plasma TNFα | NS | NS | P < 0.0001 R = 0.57 | NS | NS | NS | P = 0.01 R = 0.44 |
Smoking | P < 0.0001 R = 0.72 (lower in smokers) | NS | NS | NS | NS | NS | NS |
Reversibility | NS | NS | NS | P = 0.01 R = -0.6 | P = 0.02 R = 0.7 | NS | NS |
Gender | P = 0.04 R = 0.7 (lower in females) | NS | NS | NS | NS | NS | NS |