Table 4.

Cox Regression Analyses of All-Cause Mortality Among Participants with Frailty

Models	Hazard Ratios of All-Cause Mortality
	HR *	95% CI	P-value	HR #	95% CI	P-value
I	6.092	1.886–19.677	0.003	1.860	1.357–2.548	<0.001
II	5.107	1.414–18.441	0.013	1.781	1.263–2.510	0.001
III	4.451	1.224–16.189	0.023	1.627	1.155–2.292	0.005
IV	3.832	1.116–13.157	0.033	1.507	1.073–2.118	0.018

Notes: model I: unadjusted; model II: adjusted for age, gender; model III: adjusted for age, gender, history of diabetes; model IV: adjusted for all covariates associated at the p≤0.10 level with death in unadjusted analyses (including age, history of diabetes, MoCA<26, single-pool Kt/V, and the levels of albumin, iPTH); * Frailty was regarded as a dichotomous variable; ^# The number of frailty components was regarded as a continuous variable.

Abbreviations: HR, hazard ratio; CI, confidence interval.