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Temporal relationship of detectable autoantibodies. Patients without a clear antecedent antibody above the designated threshold were not included in analysis. OR, odds ratio; CI, confidence interval.
| Comparison thresholds | Antecedent MPO-ANCA (%) |
Antecedent dsDNAab (%) |
OR | CI |
p value (Fisher's exact) |
|---|---|---|---|---|---|
| MPO-ANCA ≥ 3U/ml versus dsDNAab ≥ 3 IU/ml |
89 (8/9) | 11 (1/9) | 64 | 3.4–1211 | 0.003 |
|
| |||||
| MPO-ANCA ≥ 3 U/ml versus dsDNAab ≥ 5 IU/ml |
100 (10/10) | 0 (0/10) | 100∗ | 5.5–1831∗ | <0.001 |
