Table 3.

Association between Number of Steps on a Non-dialysis Day and Mortality in Multivariate Cox Proportional Hazards Regression Models

		Number of Steps
		4,000 steps ≤	< 4,000 steps	Per 1,000 steps increase
Model 1	HR (95% CI)	Reference	2.92 (1.51 to 5.63)	0.82 (0.72 to 0.93)
	P value	-	0.001	0.002
Model 2	HR (95% CI)	Reference	2.72 (1.41 to 5.30)	0.83 (0.73 to 0.94)
	P value	-	0.003	0.004
Model 3	HR (95% CI)	Reference	2.58 (1.32 to 5.03)	0.84 (0.74 to 0.95)
	P value	-	0.006	0.007
Model 4	HR (95% CI)	Reference	2.62 (1.35 to 5.08)	0.83 (0.73 to 0.94)
	P value	-	0.004	0.003
Model 5	HR (95% CI)	Reference	2.37 (1.22 to 4.60)	0.84 (0.74 to 0.96)
	P value	-	0.01	0.01

Analyses were performed using Cox proportional hazards regression. HR, hazard ratio; CI, confidence interval. Model 1 included age, sex, time on hemodialysis, and body mass index. Model 2 added diabetes. Model 3 added peripheral vascular disease. Model 4 added cerebrovascular accident/transient ischemic attack. Model 5 added geriatric nutritional risk index and comorbidity score.