Final regression model for disease worsening
| p Value | OR | 95% CI | |
| Age (years) | 0.001 | 1.02 | 1.01 to1.04 |
| Lung fibrosis | 0.0004 | 2.21 | 1.43 to3.41 |
| CRP elevation | 0.002 | 1.80 | 1.23 to2.63 |
| Muscle weakness | 0.015 | 1.64 | 1.10 to2.45 |
| Active DU | 0.026 | 1.64 | 1.06 to2.54 |
| Proteinuria | 0.064 | 1.75 | 0.97 to 3.16 |
| Pericardial effusion | 0.098 | 1.65 | 0.91 to 2.97 |
| Significant dyspnoea | 0.491 | 1.20 | 0.72 to 2.00 |
Parameters in bold had strong evidence for a significant association with disease progression in the final model.
CRP, C-reactive protein; DU, digital ulcer.