Table 4a.

Patient characteristics: Cause of renal failure, comorbidities, and pharmaceutical agent use^a

Variable	Number of Patients	Percent of Total
Cause of renal failure
GN	66	11.7
pyelonephritis	15	2.7
polycystic kidneys	41	7.3
other renal	51	9
diabetes mellitus	172	30.4
hypertension	220	38.9
Comorbidities
diabetes mellitus	360	53.9
ischemic heart disease	109	19.3
myocardial infarction	39	6.9
congestive heart failure	47	8.3
malignancy	52	9.2
lung disease	53	9.49.4
stroke	56	9.9
symptomatic PVD	63	11.2
visual impairment	117	20.7
amputation	22	3.9
other	381	67.4
none	93	16.5
Use of Pharmaceutical Agents
blood pressure	393	61.2
other cardiac	219	38.8
anticoagulant	161	28.5
antiplatelet	186	33
oral iron	180	32.1
intravenous iron	307	54.8
rHuEPO	514	91

^aPVD, peripheral vascular disease; rHuEPO, recombinant human erythropoietin.