Changes in physical activity and risk of all-cause mortality in patients on maintence hemodialysis: a retrospective cohort study

Table 2 Cox proportional hazards model for all-cause mortality

Parameter	Univariate analysis^a			Multivariate analysis: Model 1^b			Multivariate analysis: Model 2^c
Parameter	Hazard ratio (95% CI)		P value	Hazard ratio (95% CI)		P value	Hazard ratio (95% CI)		P value
Change in physical activity
Becoming more active group	1.00			1.00			1.00
Stable group	0.70	(0.34–1.74)	0.54	1.41	(0.53–3.67)	0.49	1.93	(0.75–4.99)	0.17
Becoming less active group	2.21	(1.00–4.89)	0.05	2.73	(1.12–6.62)	0.03	3.68	(1.55–8.78)	< 0.01

Analyses were performed using Cox proportional hazards regression
CI confidence interval
^aUnadjusted by characteristic factors on survival
^bAdjusted by age, sex, time on hemodialysis, body mass index, primary kidney disease, atherosclerotic heart disease, congestive heart failure, cerebrovascular accident/transient ischemic attack, diabetes, serum albumin, and baseline physical activity
^cAdjusted by age, sex, time on hemodialysis, body mass index, primary kidney disease, comorbidity index, serum albumin, and baseline physical activity

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