Table 1.

Patient characteristics among different hematocrit groups during the 6-mo entry perioda

Hct < 30%30% ≤ Hct < 33%33% ≤ Hct < 36%36% ≤ Hct < 39%Hct ≥ 39%P Valueb
aHct, hematocrit; EPO, erythropoietin.
bKruskal-Wallis test for age, hospital days, mean EPO, and mean iron and χ2 test otherwise.
Patients (no.)876024,46528,6744307555
Age (yr)61.464.766.065.666.5<0.0001
Male (%)48.149.552.855.353.5<0.001
White (%)48.757.561.660.961.4<0.001
Black (%)45.436.432.131.931.9<0.001
Diabetes mellitus (%)42.346.044.743.638.7<0.001
Hospital days10.76.84.23.84.0<0.0001
Mean EPO (U/mo)66,98053,74642,82038,53840,702<0.0001
Mean iron (vials/mo)2.082.2032.3592.4882.645<0.0001