Table 6.

Predictors of all-cause mortality in the multivariate analysis

Predictor	P	Hazard Ratio	95% Confidence Interval
Age	<0.001	3.76	1.82–7.78
Sex	0.33	0.69	0.33–1.45
ANCA specificity in ELISA	0.51	1.47	0.46–4.68
Initial serum creatinine (μmol/L)	0.001
first tertile (≤170)	0.0001	0.08	0.02–0.30
second tertile (171–447)	0.24	0.64	0.31–1.35
third tertile (>447)	Reference group
Oral cyclophosphamide/pulse cyclophosphamide	0.98	1.01	0.50–2.04
Plasma exchange	0.90	0.87	0.11–7.13
Intravenous methylprednisolone pulse therapy	0.02	0.32	0.13–0.81
HLA-DPB1*0402	0.01	2.52	1.21–5.28