Table 2.

Spearman correlation analysis with frailty scores.

Variables	Unadjusted		Age-adjusted
	r value	P value	r value	P value
Age (years)	0.392	<0.001*	-	-
DM	0.297	0.043*	0.281	0.099
CVD	0.533	0.034*	0.107	0.283
CAD	0.493	0.039*	0.137	0.255
Hb (g/l)	-0.606	<0.01*	-0.312	0.063
Albumin (g/l)	-0.405	<0.01*	-0.456	<0.01*
P (mmol/l)	0.240	<0.01*	0.292	0.074
Uric acid (μmol/l)	-0.730	<0.01*	-0.368	0.026*
DBP after HD (mmHg)	-0.482	0.020*	-0.424	0.015*
ultrafiltration volume/ dry weight	0.440	<0.01*	0.457	<0.01*

DM, CVD, CAD: no=0, yes=1

Abbreviations: BMI, body mass index; DM, diabetes mellitus; CVD, cerebral vascular disease; CAD, coronary artery disease; DBP, diastolic blood pressure; HD, hemodialysis.

* P< 0.05