Table 1.

Demographic and clinical characteristics of patients with varying levels of GFR at the initiation of dialysisa

GFR <5 ml/min per 1.73m2 (N = 21,373)GFR = 5 to 9.9 ml/min per 1.73m2 (N = 56,858)GFR ≥10 ml/min per 1.73m2 (N = 12,666)
aVA, Veteran's Affairs; ESRD, end-stage renal disease.
bRetired due to age, preference or disability and medical leave of absence.
cUnable to transfer or ambulate.
Mean age (SD)57.4 (16.4)62.2 (15.1)65.6 (14.6)
Gender (% male)44.454.459.4
Race (%)
Caucasian47.156.259.7
African American32.128.327.1
Hispanic13.210.69.8
Asian3.01.91.4
other4.73.02.0
Insurance status (%)
private insurance25.524.821.8
Medicare only12.114.416.3
Medicaid only13.510.99.6
Medicare and Medicaid9.911.814.2
VA or other insurance(s)26.431.934.2
none7.46.23.9
Employment status (%)
employed/student/homemaker35.625.818.2
unemployed22.517.916.1
otherb41.956.365.7
Cause of ESRD (%)
diabetic nephropathy30.546.755.0
hypertension27.225.724.7
glomerulonephritis20.212.77.7
other22.114.912.7
Hemodialysis as initial modality(%)89.686.685.7
Prevalence of comorbid conditions (%)
cardiac disease32.047.962.6
peripheral vascular disease8.916.021.7
hypertension71.874.471.2
poor functional statusc3.65.18
Clinical and laboratory parameters [mean (SD)]
weight (kg)72.6 (20.3)73.4 (19.9)70.2 (18.9)
body mass index (weight/height2)26.0 (6.8)26.0 (6.6)24.9 (6.4)
blood urea nitrogen (mg/dl)118.6 (35.5)91.4 (28.4)75.1 (29.4)
serum creatinine (mg/dl)13.3 (4.2)7.7 (1.8)4.5 (1.1)
serum albumin (g/dl)3.1 (0.7)3.2 (0.7)3.3 (0.6)
hematocrit (%)26 (6)28 (5)30 (5)