Table 2. Principal component analysis.
| Component | Eigenvalue | Difference | Proportion | Cumulative |
|---|---|---|---|---|
| Component 1 | 4.25 | 3.29 | 62.73 | 62.73 |
| Component 2 | 0.96 | 0.44 | 14.18 | 76.91 |
| Component 3 | 0.52 | 0.10 | 7.73 | 84.64 |
| Component 4 | 0.43 | 0.07 | 6.27 | 90.91 |
| Component 5 | 0.36 | 0.19 | 5.27 | 96.18 |
| Component 6 | 0.17 | 0.08 | 2.48 | 98.66 |
| Component 7 | 0.09 | NA | 1.34 | 100.00 |
| Variable | Component 1 | Component 2 | ||
| IFN-γ | 0.39 | -0.23 | ||
| IL-17 | 0.39 | -0.29 | ||
| IL-1β | 0.44 | 0.11 | ||
| IL-6 | 0.41 | 0.30 | ||
| MCP-1 | 0.37 | 0.07 | ||
| MIP-1β | 0.26 | 0.70 | ||
| TNF | 0.36 | -0.51 |
Principal component analysis of the ex vivo response to M. leprae at T0 and T1 (cytokine levels in M. leprae-stimulated 5-day culture supernatants of peripheral blood leukocytes). NA, not applicable.