Table 6.

Cox proportional hazards model of the association of sulfate clearance and established prognostic factors with disease outcome in CHF

	Sulfate Clearance
Model	HR* (95% CI)	P value
1: Crude	0.38 (0.23–0.63)	<0.001‡
2: Adjusted for age	0.46 (0.27–0.79)	0.005‡
3: Adjusted for age and eGFR	0.48 (0.28–0.83)	0.009‡
4: Adjusted for age, eGFR and NT-proBNP	0.55 (0.31–0.98)	0.042‡

CHF, chronic heart failure; HR, hazard ratio; CI, confidence interval; eGFR, estimated glomerular filtration rate; NT-proBNP, NH₂-terminal pro-B-type natriuretic peptide.

^*HR per SD increase. ‡Significant P value.