Table 2.

Comparison of ANCA-associated antibodies: CLAAS versus all ANCA+ individuals.

Anti-MPO/PR3 StatusCLAAS, n = 50ANCA+, n = 97OR (95% CI)p1
Anti-MPOAnti-PR3
17 (34.0)38 (39.2)0.80 (0.40–1.63)0.592
++13 (26.0)1 (1.0)33.73 (4.26–267.2)< 0.0001
+9 (18.0)26 (26.8)0.60 (0.26–1.40)0.308
+11 (22.0)33 (34.0)0.55 (0.24–1.21)0.183
  • Values are n (%) unless otherwise specified.

  • 1 Fisher’s exact test, 2-sided. CLAAS: cocaine/levamisole-associated autoimmunity syndrome; ANCA: antineutrophil cytoplasmic antibodies; MPO: myeloperoxidase; PR3: proteinase 3.