Novel Clinical and Diagnostic Aspects of Antineutrophil Cytoplasmic Antibodies

Table 1

Agreement between a new PR3 CLIA assay and an established high sensitivity PR3 assay. Spearman’s rho of results was found at 0.74 (95% CI 0.67–0.80, data not shown) [65].

All patients (𝑛=196)	ELIA PR3^s			Percent agreement; (95% confidence)
	Positive	Negative	Total
PR3 CLIA
Positive	45	3	48	Pos. Agree = 86.5 (74.2–94.4%)
Negative	7	141	148	Neg. Agree = 97.9 (94.0–99.6%)
Total	52	144	196	Total Agree = 94.9 (90.8–97.5%)