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. 2013 Aug 22;18(1):38–46. doi: 10.1111/hdi.12078

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© 2013 The Authors. Hemodialysis International published by Wiley Periodicals, Inc. on behalf of International Society for Hemodialysis.

This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Treatment intervals k − 2 to k + 1 with at least one hemoglobin (Hb) measurement within each interval. Interval k is the index period with at least one transferrin saturation (TSAT) measurement. ΔHb = change of mean Hb from interval k to interval k + 1; ≥1 Hb = at least one Hb measure in each 4-week interval; ≥1 TSAT = at least one TSAT value in interval k; ≥1 ferritin = at least one ferritin value within intervals k − 2, k − 1, or k; ≥1 Epoetin alfa dose = at least one Epoetin alfa i.v. administration within interval k − 1 or k.