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Serum IgG4/Subclass Ratio Analysis
| Subclass Ratio | PSC | IAC | P Value | AUROC (95% CI) |
|---|---|---|---|---|
| IgG4/IgG1, median (IQR) | 0.21 (0.15-0.28) | 0.61 (0.32-1.17) | <0.001 | 0.887 (0.828-0.946) |
| IgG4/IgG2, median (IQR) | 0.51 (0.41-0.51) | 1.10 (0.68-2.13) | <0.001 | 0.859 (0.788-0.931) |
| IgG4/IgG3, median (IQR) | 4.46 (2.79-6.74) | 10.14 (6.64-20.82) | <0.001 | 0.832 (0.752-0.913) |
