Table 2.
Diagnostic models (clinical and clinical-dermoscopic) for differential diagnosis of chronic spontaneous urticaria and urticarial vasculitis.
| Diagnostic model | Predictor | p-value | OR | 95% CI |
|---|---|---|---|---|
| Clinical model | Persistence (wheals ˃24 hours) | <0.001 | 4.97 | 1.85–13.35 |
| Purpura/residual hyperpigmentation | <0.001 | 6.34 | 2.19–18.36 | |
| Clinical-dermoscopic model | DC purpuric patches/globules (PG) | <0.001 | 19.42 | 5.79–65.15 |
| DC red linear vessels | 0.011 | 0.13 | 0.03–0.63 | |
| Persistence (wheals ˃24 hours) | 0.006 | 5.65 | 1.64–19.44 |
Multivariate analysis with only clinical variables entered (clinical model) and all variables (clinical-dermoscopic model): adjusted clinical and clinical-dermoscopic predictors for urticaria vasculitis from 135 patients.