Table 2.

ORs for transfusion by Hb category for each treatment group

Measured Hb Level (g/dl)Treatment Group (OR [95% CI])
Untreated (Observation = 53,689)Iron Only (Observation = 315,513)ESA Only (Observation = 194,748)ESA+Iron (Observation = 522,018)
<7.01.59 (1.56 to 1.61)1.21 (1.19 to 1.22)1.21 (1.18 to 1.24)1.16 (1.15 to 1.18)
7.0 to 7.91.47 (1.45 to 1.49)1.12 (1.11 to 1.13)1.13 (1.12 to 1.15)1.10 (1.09 to 1.11)
8.0 to 8.91.27 (1.25 to 1.28)1.04 (1.04 to 1.04)1.05 (1.05 to 1.06)1.03 (1.03 to 1.04)
9.0 to 9.91.08 (1.07 to 1.09)1.01 (1.01 to 1.01)1.02 (1.01 to 1.02)1.01 (1.01 to 1.01)
10.0 to 10.9ReferenceReferenceReferenceReference
11.0 to 11.90.99 (0.97 to 1.01)1.00 (1.00 to 1.00)0.99 (0.99 to 0.99)0.99 (0.99 to 0.99)
≥12.00.98 (0.96 to 1.01)0.99 (0.99 to 0.99)0.98 (0.98 to 0.98)0.99 (0.99 to 0.99)
  • These analyses were conducted with multiple Hb measurements per patient. Model was adjusted for repeated measures and values of patient age; gender; eGFR, ICD-9–coded anemia and CKD; inpatient length of stay or outpatient status; nephrology and hematology care; and various comorbidities including diabetes, CAD, and CHF updated at the time of Hb measurement.