Table 1.

Characteristics of the study cohort (N = 149,293)

CharacteristicParenteral Iron in Month 4
VariableYes (n = 86,768)No (n= 62,525)P
Age (years)61.9 ± 15.162.1 ± 15.20.02
Men (%)51.851.30.04
Race (%)
    White53.151.1<0.0001
    African American41.241.60.14
Primary cause of ESRD (%)
    diabetes44.240.9<0.0001
    glomerulonephritis11.212.20.01
    hypertension29.530.2<0.0001
Comorbid conditions (%)
    atherosclerotic heart disease24.722.6<0.0001
    congestive heart failure23.020.6<0.0001
    dysrhythmia15.114.1<0.0001
    cardiac other15.314.5<0.0001
    CVA/TIA7.57.40.23
    peripheral vascular disease18.116.7<0.0001
    cancer3.93.90.90
    diabetes51.747.6<0.0001
    chronic obstructive pulmonary disease10.18.6<0.0001
    gastrointestinal disease4.94.0<0.0001
    liver disease6.56.90.0007
Hemoglobin level in month 412.0 ± 1.3011.8 ± 1.29<0.0001
Maintenance iron in months 1-3 (%)57.212.0<0.0001
ESAs in month 4 (units/month)87,324 ± 85,98572,657 ± 77,477<0.001
  • CVA/TIA, cerebrovascular accident/transient ischemic attack; ESAs, erythropoiesis stimulating agents.