CORRECTION
Erratum for de Lind van Wijngaarden et al.: Chances of Renal Recovery for Dialysis-Dependent ANCA-Associated Glomerulonephritis. J Am Soc Nephrol 18: 2189–2197, 2007. The co-authors regret that Charles D. Pusey was previously omitted as coauthor of this paper by unfortunate accident. He should be a coauthor of this paper.
CORRECTION
Erratum for Brimble and Clase: Hemoglobin Variability in Dialysis Patients. J Am Soc Nephrol 18: 2218–2220, 2007. We stated that instability was greater with the shorter than with the longer-acting epoetin in the work of West et al.1 This was not the case: the mean value for patients receiving weekly erythropoietin β was 0.58 g/dl per mo (standard deviation [SD] 0.29 g/dl per mo) and for darbepoetin was 0.68 g/dl per mo (SD 0.26 g/dl per mo).1 A two-sample t test indicated statistical significance at the 5% level (P = 0.03). We gave two references, the second of which was incorrect.
We wrote: “It is probable that longer-acting agents lead to greater stability at a given dose frequency—under the experimental conditions used in the current paper, stability was greater with a longer acting epoietin compared with a shorter-acting agent.1,6” This should be revised to read:
“While one might expect stability, at a given dose frequency, to be greater with a longer-acting agent, data from West et al show that the converse is true.1 This interesting observation warrants further study.”
We apologize for the error.
REFERENCE
1. West RM, Harris K, Gilthorpe MS, Tolman C, Will EJ: Functional data analysis applied to a randomized controlled clinical trial in hemodialysis patients describes the variability of patient responses in the control of renal anemia. J Am Soc Nephrol 18 : 2371 –2376, 2007
