Evaluation of three scoring systems for predicting renal prognosis in antineutrophil cytoplasmic antibody-associated glomerulonephritis

Table 4 Prediction of renal prognosis by RRS, BVAS, RVLs score, RR, and RRB added to the base model

Characteristics	C statistic (95% CI)	P	IDI	Categorical NRI	Continuous NRI
Base model (reference)	0.796 (0.704–0.860)
Base model plus RRS	0.883 (0.822–0.934)	< 0.001	0.172	0.204	0.677
Base model plus BVAS	0.812 (0.724–0.867)	0.234	0.022	0.098	0.374
Base model plus RVLs score	0.849 (0.777–0.897)	0.06	0.175	0.215	0.795
Base model plus RR	0.899 (0.842–0.943)	< 0.001	0.241	0.355	1.236
Base model plus RRB	0.918 (0.868–0.954)	< 0.001	0.286	0.445	1.169

NRI net reclassification improvement, IDI integrated discrimination improvement, RRS renal risk score, BVAS Birmingham vasculitis activity score, RVLs renal vascular lesions, RR RVLs score & RRS, RRB RVLs score & RRS & BVAS
P < 0.05 indicates that the difference is statistically significant and is bolded in the table

ISSN: 2047-783X