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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

Table 5.

Detectable rate ratios for ESRD with 80% statistical power at 5% two-sided significance level (N = 540)

% Exposed Incidence among the Unexposed
3 per 100
Person-Years		 6 per 100
Person-Years		 9 per 100
Person-Years
20 2.61 2.06 1.84
30 2.37 1.91 1.72
40 2.26 1.84 1.67