Distribution of parameters into different factors after exclusion of outliers
| With outliers | No outliers* | |
|---|---|---|
| EBC, exhaled breath condensate; LTB4, leukotriene B4; MDC, macrophage derived chemokine; TARC, thymus and activation regulated chemokine; FEno, exhaled nitric oxide. | ||
| *Five factors were obtained after the exclusion of all outliers, with the respective eigenvalues being 1.92, 1.75, 1.55, 1.30, and 1.23 and the percentage of total variances explained being 16.0%, 14.6%, 12.9%, 10.9%, and 10.2%. | ||
| Plasma total IgE concentration | Factor 1 | Factor 1 |
| Specific IgE to D pteronyssinus | Factor 1 | Factor 1 |
| Peripheral blood eosinophil percentage | Factor 1 | Factor 1 |
| Feno | Factor 1 | Factor 1 |
| Plasma TARC concentration | Factor 2 | Factor 2 |
| Plasma MDC concentration | Factor 2 | Factor 2 |
| EBC LTB4 concentration | Factor 3 | Factor 3 |
| EBC MDC concentration | Factor 3 | Factor 3 |
| EBC eotaxin concentration | Factor 3 | Factor 3 |
| Disease severity score | Factor 4 | Factor 4 |
| Body mass index | Factor 4 | Factor 5 |
| Plasma eotaxin concentration | Factor 4 | Factor 2 |
| Total variance explained | 55.5% | 64.6% |