Table 2.

Distribution of patient characteristics in the study population (%)a

Characteristic (n = 75,283) <27% (n = 9,130) 27% to <30% (n = 22,217) 30% to <33% (n = 33,122) 33% to <36% (n = 10,129) ≥36% (n = 685)P Value
Age
under 4527.219.816.515.118.00.001
45 to 6438.536.534.333.238.0
65 to 7423.428.430.832.229.2
≥7510.915.218.519.515.0
Female52.653.451.546.039.70.001
Race
white37.145.452.657.753.6
black54.745.237.632.533.70.001
Native American1.41.41.41.74.1
other6.88.18.48.18.6
Prior ESRD exposure
<1 yr21.622.923.523.020.00.001
1 to 2 yr19.019.619.819.517.2
2 to 5 yr34.134.333.733.532.6
≥5 yr25.323.223.124.030.2
Primary renal diagnosis
diabetes mellitus27.231.232.131.331.40.001
hypertension32.631.630.829.827.6
GN16.216.216.217.619.1
other24.021.020.921.421.9
Comorbid conditions
ASHD35.457.655.453.143.10.001
CVA/TIA28.830.029.128.124.80.002
PVD61.863.061.260.060.20.001
CHF59.257.655.453.155.60.001
cardiac other68.067.865.263.664.10.001
COPD21.923.923.323.322.50.002
cancer24.125.425.326.020.40.024
liver26.723.322.221.124.70.001
gallbladder11.211.810.79.710.10.001
GI34.131.227.525.027.20.001
No. of access procedures
no procedures61.163.970.274.873.30.001
1 to 3 procedures24.122.619.517.018.4
≥4 procedures14.813.610.38.28.3
No. of transfusions
no transfusion74.984.191.394.596.10.001
1 to 2 pints11.38.54.73.02.2
≥3 pints13.87.44.02.11.8
Length of stay
no hospital stay42.448.458.267.567.70.001
1 to 3 days11.412.111.710.310.4
3 to 10 days19.417.815.512.311.5
11 to 20 days13.011.17.85.75.8
>20 days13.910.76.94.34.5
Hematocrit (mean ± SD) 25.04 ± 2.06 28.69 ± 0.84 31.40 ± 0.84 33.88 ± 0.72 37.57 ± 1.62 0.001
  • a Abbreviations as in Table 1.