A modified renal risk score for Chinese patients with antineutrophil cytoplasmic antibody-associated vasculitis

Table 3 The modified model established by Cox regression (n = 272)

Parameters	36 months			60 months			120 months
Parameters	HR	95% CI	P	HR	95% CI	P	HR	95% CI	P
eGFR (ml/min per 1.73 m², expressed as ln)	0.37	0.25–0.56	< 0.001	0.45	0.31–0.65	< 0.001	0.55	0.40–0.77	< 0.001
IF/TA	----	----	0.056	----	----	0.012	----	----	0.036
IF/TA < 25%	Ref.	----	----	Ref.	----	----	Ref.	----	----
IF/TA 25–50%	1.40	0.77–2.55	0.268	1.60	0.91–2.80	0.100	1.26	0.76–2.09	0.374
IF/TA > 50%	2.34	1.17–4.68	0.016	2.66	1.39–5.08	0.003	2.17	1.20–3.93	0.010
Proportion of normal glomeruli	0.00	0.00–0.01	< 0.001	0.00	0.00–0.02	< 0.001	0.01	0.00–0.03	< 0.001

Abbreviations: CI confidence interval, eGFR estimated glomerular filtration rate, HR hazard ratio, IF/TA interstitial fibrosis and tubular atrophy, ln natural logarithm

ISSN: 1741-7015