The Long-Term Prognostic Significance of 6-Minute Walk Test Distance in Patients with Chronic Heart Failure

Table 5

Multivariable predictors of long-term all-cause mortality in patients with CHF: final model (listed in order of magnitude of Wald statistic).

Variables	𝑃 value	Wald	HR	95% CI
				Lower	Upper
Log NT pro-BNP	<0.0001	86.3	1.393	1.299	1.494
6-MWT (m)*	<0.0001	57.2	0.980	0.974	0.985
Age (years)	<0.0001	29.9	1.026	1.017	1.036
Diastolic BP (mmHg)	0.001	12.8	0.990	0.984	0.995
Urea (mmol·L^−1)	0.002	9.5	0.980	0.974	0.985
Sodium (mmol·L^−1)	0.052	3.8	0.978	0.957	1.000

HR: hazard ratio; 95% CI: 95% confidence intervals; 6-MWT: 6-minute walk test; NYHA: New York Heart Association; *HR reported for 10-unit increment.