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. Author manuscript; available in PMC: 2013 Apr 18.
Published in final edited form as: Clin J Am Soc Nephrol. 2006 Jul 19;1(5):1006–1015. doi: 10.2215/CJN.01941205

Figure 2.

Figure 2

Statistical power for decline in GFR at 5% two-sided significance level with N = 540 and overall rate of GFR decline of 5 ml/min per 1.73 m2 per year.