Long-Term Prognosis of Hyperferritinemia Induced by Intravenous Iron Therapy in Patients Undergoing Maintenance Hemodialysis: A 10-Year, Single-Center Study

Table 3

Cox proportional hazards model for risk of death based on ferritin level <300 ng/mL versus ≥300 ng/mL.

	Univariate analysis					Corrected by age
	HR	95% CI			value	HR	95% CI			value
Sex female (vs. male)	0.8	0.3	,	2.0	0.6	−
Age	1.1	1.0	,	1.1	0.01^∗	−
Dialysis vintage	1.0	1.0	,	1.1	0.3	−
Initial ferritin ≥500 at start
Decreased to <300 ng/mL in 10 years	1.0		Ref			1.0		Ref
Not decreased: ≥300 ng/mL in 10 years	7.6	1.2	,	47.7	0.03^∗	9.6	1.4	,	65.1	0.02^∗
300 ng/mL ≤ initial ferritin < 500 at start
Decreased to <300 ng/mL in 10 years	1.0		Ref			1.0		Ref
Not decreased: ≥300 ng/mL in 10 years	5.2	1.1	,	25.8	0.04^∗	11.6	2.0	,	67.1	0.006^∗

HR, hazard ratio; CI, confidence interval. .