Table 3.
Diagnostic properties of IgG4 anti-CD74 in axSpA compared to Blood Donors.
| axSpA | BD | Total | Predictive Value | |
|---|---|---|---|---|
| IgG4 Anti-CD74+ | 45 | 21 | 66 | PPV 68% |
| IgG4 Anti-CD74- | 4 | 81 | 85 | NPV 95% |
| Total | 49 | 102 | 151 | |
| Sensitivity 92% |
Specificity 79% |
LR+ 4.4 |
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