Table 3 Incidence rates and risks of AVF/AVG dysfunction in SLE and non-SLE patients.

Vascular access type	SLE patients			Non-SLE patients (reference)			Crude		Competing risk
Vascular access type	No. of Events	Person-years	Incidence rate^a	No. of Events	Person-years	Incidence rate^a	HR (95% CI)	P	SHR (95% CI)	P
AVF	780	33,724.2	20.94	2173	11,393.9	19.07	1.09 (1.00, 1.18)	0.045	1.10 (1.01–1.19)	0.022
AVG	144	202.7	71.06	416	556.3	74.78	0.94 (0.78, 1.14)	0.540	1.00 (0.83–1.20)	0.992

AVF arteriovenous fistula, AVG arteriovenous graft, SLE systemic lupus erythematosus, HR hazard ratio, SHR subdistribution hazard ratio, CI confidence interval.
^aPer 100 person-years.

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