Table 4.

Disease-specific measures of validity

	Cases (Biopsy)	Cases (Form 2728)	Sensitivity	95% CI	PPV	95% CI	FP Rate	95% CI
Individual disease
Wegener granulomatosis	10	8	0.30	0.07, 0.65	0.38	0.09, 0.76	0.02	0.01, 0.06
lupus erythematosus	30	8	0.27	0.12, 0.46	1.00	0.63, 1.00	0.00	0.00, 0.02
FSGS	38	11	0.26	0.13, 0.43	0.91	0.59, 1.00	0.01	0.00, 0.03
membranous nephropathy	27	5	0.19	0.06, 0.38	1.00	0.48, 1.00	0.00	0.00, 0.02
amyloidosis	16	2	0.13	0.02, 0.38	1.00	0.16, 1.00	0.00	0.00, 0.02
Disease categories
GN	76	50	0.37	0.26, 0.49	0.56	0.41, 0.70	0.16	0.10, 0.23
neoplasms/tumors	23	4	0.17	0.05, 0.39	1.00	0.40, 1.00	0.00	0.00, 0.02
secondary GN/vasculitis	108	19	0.17	0.10, 0.24	0.95	0.74, 1.00	0.01	0.00, 0.05